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Kanjuro Makihara

Section

Graduate School of Engineering

Job title

Professor

Degree

博士（工学）（東京大学）
修士（工学）（東京大学）

researchmap

https://researchmap.jp/read0155084

J-GLOBAL ID

201101027275938728

e-Rad No.

60392817

ORCID

https://orcid.org/0000-0003-3564-2022

Researcher ID

K-8857-2018

Research History 5

2019/04 -

Tohoku University　Department of Aerospace Engineering　Professor
2011/01 -

Tohoku University　Department of Aerospace Engineering　Associate Professor
2009/12 -

Japan Aerospace Exploration Agency (JAXA) / Institute of Space and Astronautical Science (ISAS)　Dept. of Space Flight Systems
2007/02 -

University of Cambridge, UK　Postdoctral Fellowship for Research Abroad
2004/04 -

Japan Aerospace Exploration Agency (JAXA) / Institute of Space and Astronautical Science (ISAS)　Dept. of Space Flight Systems　Aerospace Research Associate

Education 2

The University of Tokyo　Graduate School, Division of Engineering　Department of Aeronautics and Astronautics

- 2004/03
The University of Tokyo　Faculty of Engineering　Department of Aeronautics and Astroronautics

- 1998/03

Committee Memberships 13

日本航空宇宙学会北部支部　支部長

2025/04 - Present
日本機械学会　代表会員

2024/04 - Present
JSME Tohoku Branch　Commercial Board members

2021/04 - Present
日本機械学会　表彰部会委員

2021/04 - 2023/03
JSME Tohoku Branch　Board members (Manager in charge of awards)

2021/04 - 2023/03
日本機械学会・機械力学・計測制御部門　運営委員

2016/04 - 2019/03
スマート構造システムの将来技術と実用化に関する研究会　運営委員

2014/04 - 2019/03
日本機械学会・校閲委員　運営委員

2015/04 - 2017/03
日本航空宇宙学会・論文編集委員　委員

2014/04 - 2017/03
日本航空宇宙学会・北部支部幹事　幹事

2012/02 - 2017/03
日本機械学会・宇宙工学部門　運営委員

2012/04 - 2016/03
日本機械学会・東北支部幹事　幹事

2012/04 - 2016/03
日本航空宇宙学会・構造部門委員会　構造部門委員

2011/04 - 2013/03

Show all ︎Show first 5

Professional Memberships 3

日本機械学会
日本航空宇宙学会
American Institute of Aeronautics and Astronautics (AIAA)

Research Interests 7

Energy-harvesting for flexible structure
Energy-recycling
Space debris protection and detection
Multibody dynamics
Vibration control for flexible space structure
Aeroplane
Large Space Structure

Research Areas 3

Informatics / Mechanics and mechatronics /
Informatics / Robotics and intelligent systems /
Aerospace, marine, and maritime Engineering / Aerospace engineering / Aerospace

Awards 7

交通物流部門大会賞

2022/03　日本機械学会交通・物流部門　航空機・車両・鉄道・エレベータに対する統一的な柔軟マルチボディ解析法の構築
Best Presentation Award for Young Researcher

2020/12　ICFD2020 Secretariat, Institute of Fluid Science　Flexible Wing Fluid-Structure Interaction Model Coupling Unsteady Vortex Lattice Method and Absolute Nodal Coordinate Formulation
Outstanding Reviewer Award 2018 "Smart Materials and Structures"

2019/03　IOP Publishing
Outstanding Reviewer Award 2017 "Smart Materials and Structures"

2018/03　IOP Publishing
Outstanding Reviewer Award 2016 "Smart Materials and Structures"

2017/03　IOP Publishing
Best Paper Award,

2015/05　The Society for Aerospace System Engineering,　Transient Analysis of Self-Powered Energy-Harvesting using Bond-Graph for Aerospace Applications
Audience Award

2005/09　The Japan Society of Mechanical Engineers

Show all ︎Show 5

Papers 118

Data-Driven Real-Time Topology Optimization Using Consistent Rotation-Based Moving Morphable Components International-journal Peer-reviewed

Shunsuke Hirotani, Kentaro Yaji, Kanjuro Makihara, Keisuke Otsuka

AIAA Journal　(in press)　2025/12/31

DOI： 10.2514/1.J065458 　
Dynamic modal rotation method with inertial nonlinearity for large deformation analysis of slender structures International-journal Peer-reviewed

Yoshitaka Shizuno, Ryo Kuzuno, Naruya Nagai, Motonobu Kawai, Shugo Kawashima, Yukito Kodama, Kanjuro Makihara, Keisuke Otsuka

Journal of Sound and Vibration　619　119427-119427　2025/12
Publisher: Elsevier BV
DOI： 10.1016/j.jsv.2025.119427 　

ISSN： 0022-460X
Deep learning for constructing ordinary differential equations in Hamiltonian formulation of multibody systems Peer-reviewed

Shuonan Dong, Ryo Kuzuno, Kanjuro Makihara, Keisuke Otsuka

Mechanics Research Communications　148　104485-104485　2025/12
Publisher: Elsevier BV
DOI： 10.1016/j.mechrescom.2025.104485 　

ISSN： 0093-6413
Modified Charge Inversion and Extraction Switching Strategies for a Strongly Coupled Piezoelectric Vibration Energy Harvester International-journal International-coauthorship Peer-reviewed

Zhou, M., Hara, Y., Tang, T., Mishima, K., Jia, Y., Shi, Y., Soutis, C., Kurita, H., Narita, F., Otsuka, K., Makihara, K.

Journal of Intelligent Material Systems and Structures　(in press)　2025/11
Reduced-order modeling of Hamiltonian formulation in flexible multibody dynamics: Theory and simulations International-journal Peer-reviewed

Shuonan Dong, Ryo Kuzuno, Keisuke Otsuka, Kanjuro Makihara

Applied Mathematical Modelling　144　116055-116055　2025/08
Publisher: Elsevier BV
DOI： 10.1016/j.apm.2025.116055 　

ISSN： 0307-904X
Shape Keepers of Hollow Cylindrical Electrodynamic Tethers for Space Debris Removal Peer-reviewed

Yushin Hara, Ryo Kuzuno, Hikaru Takahashi, Yoshihiro Sugiyama, Yuki Kikuji, Kiyonobu Ohtani, Sunao Hasegawa, Kanjuro Makihara

AIAA, Journal of Spacecraft and Rockets　62　(4)　1433-1444　2025/07
Publisher: American Institute of Aeronautics and Astronautics (AIAA)
DOI： 10.2514/1.a36222 　

ISSN： 0022-4650

eISSN： 1533-6794

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Electrodynamic tethers are promising for removing debris but may be severed when they collide with orbital debris. Hollow cylindrical tethers (HCTs) had more severance-resistant designs than conventional solid cylindrical tethers (SCTs) because of their larger diameters for the same weight. However, high survivability could not be achieved if the cross-sectional shape of the HCT deviated from a cylindrical one. In this paper, we propose a novel device called a shape keeper (SK) that maintains the shape of the HCT. We propose three SKs made of different materials: aluminum, nonconductive polyurethane foam, and conductive polyurethane foam. The proposed SKs are evaluated in three aspects. First, the collision damage to a HCT with SKs is evaluated through hypervelocity collision experiments. The introduced SK functions as a bumper and suppresses tether damage depending on the collision point. Second, the debris removal time is investigated by considering the influence of the installed SKs on the debris removal mission. Third, the survivability of the HCT with SKs is assessed according to the two aforementioned evaluations. The results indicate that HCTs with SKs are superior to conventional SCTs in terms of survivability with the same weight.
Switch control strategy adapted to multimodal vibration and circuit with fewer diodes for magnetostrictive energy harvesting Peer-reviewed

Yuusuke Kobayashi, An LI, Suhaib Solehuddin, Kota Koyano, Yushin Hara, Kanjuro MAKIHARA

Smart Materials and Structures　34　(6)　065039　2025/06/16
Publisher: IOP Publishing
DOI： 10.1088/1361-665x/ade4ea 　

ISSN： 0964-1726

eISSN： 1361-665X

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Abstract Vibration energy harvesting (VEH) has garnered substantial attention in recent years. Among the various VEH technologies, magnetostrictive transducers stand out due to their remarkable resistance to shock and heat. This study presents a novel magnetostrictive VEH method that integrates an innovative circuit design with a switching control strategy to optimise energy harvesting. The proposed configuration comprises a magnetostrictive transducer, an electrical circuit, and an electronic switch. The design minimises energy losses and improves overall harvesting efficiency by utilising fewer diodes than conventional circuits. The switching control strategy regulates the electronic switch’s operation in response to multimodal vibrations. Numerical simulations were performed to evaluate the system’s performance and investigate how changes in transducer and circuit parameters affect the harvested energy. Experimental validation on a truss structure showed that the proposed method harvested 105 times more energy than traditional techniques.
Model predictive control for optimized piezoelectric energy harvesting under multimodal vibration excitation: theory and simulation

Meng Zhou, Yushin Hara, Kanjuro Makihara

Engineering Research Express　7　(2)　025526-025526　2025/05/07
Publisher: IOP Publishing
DOI： 10.1088/2631-8695/add083 　

eISSN： 2631-8695

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Abstract In this paper, a novel switching control strategy for multimodal piezoelectric vibration energy harvesting (PVEH) systems using model predictive control (MPC) is presented. Although conventional switching methods have been shown to be effective for single-degree-of-freedom systems, they are often unable to achieve optimal performance in multimodal vibration environments owing to the varying displacement amplitudes across different modes. To overcome this limitation, a mathematical model for multi-degree-of-freedom PVEH systems has been developed, and an MPC-based switching strategy has been proposed that optimizes energy-harvesting efficiency by predicting the system behavior over a finite time horizon. The proposed approach enables dynamic adaptation of the switching timing for both charge inversion and extraction switching based on the predicted future states. Numerical simulations demonstrate that the predictive switching method achieves a significantly higher energy-harvesting efficiency than the conventional method, with improvements observed in different scenarios with piezoelectric factors. The robustness of the method is validated by a parameter sensitivity analysis. A computational feasibility analysis also shows that the proposed strategy maintains real-time performance with control horizons of up to 35 units. These results suggest that the developed predictive switching control strategy offers a promising solution to improve energy-harvesting efficiency in practical multimodal PVEH applications.
Partial heat curing enhancing space debris shielding performance in multi-layered inflatable structures Peer-reviewed

Hikaru Takahashi, Yoshihiro Sugiyama, Ryo Kuzuno, Sunao Hasegawa, Kiyonobu Ohtani, Yushin Hara, Kanjuro Makihara

Journal of Space Safety Engineering　7　(2)　025526　2025/05
Publisher: Elsevier BV
DOI： 10.1016/j.jsse.2025.04.002 　

ISSN： 2468-8967
Support Vector Machine Framework for Detecting Ambiguous Contours of Space Debris Cloud International-journal Peer-reviewed

Daisuke Morimoto, Hikaru Takahashi, Yoshihiro Sugiyama, Keisuke Otsuka, Kiyonobu Ohtani, Sunao Hasegawa, Kanjuro Makihara

AIAA, Journal of Spacecraft and Rockets　62　(2)　528-541　2025/03
Publisher: American Institute of Aeronautics and Astronautics (AIAA)
DOI： 10.2514/1.a35927 　

ISSN： 0022-4650

eISSN： 1533-6794

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Operational spacecraft are prepared for collisions with space debris by installing protective walls (bumpers). A group of vaporized and liquefied microparticles generated by debris collisions is called a debris cloud. To evaluate the protective performance of bumpers, it is important to measure the spread velocity and angle of the debris cloud. However, debris cloud images exhibit ambiguous contours of debris clouds. Consequently, measurement errors in the spread velocity and spread angles occur because of the observer’s subjectivity. Commonly used derivative-based methods can detect steep contours; however, they cannot detect ambiguous contours such as those of debris clouds. In this study, a method for uniquely detecting the ambiguous contours of a debris cloud based on supervised machine learning and a continuous wavelet transform (CWT) is proposed. Feature points that indicate candidate points of the debris cloud contour are extracted using a method based on CWT. Four types of specific features for debris cloud contours were assigned to the feature points. Supervised machine learning using a support vector machine can detect the debris cloud contours. The proposed method enables the evaluation of the ambiguous contours of a debris cloud and the protection performance of a bumper without observer subjectivity.
Statistically Oriented Optimal Control and Disturbance Prediction for Piezoelectric Semi-Active Vibration Suppression International-journal Peer-reviewed

Mizuki Abe, Koyo Mishima, Yushin Hara, Keisuke Otsuka, Kanjuro Makihara

IEEE Transactions on Control Systems Technology　33　(1)　165-180　2025/01
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
DOI： 10.1109/tcst.2024.3463333 　

ISSN： 1063-6536

eISSN： 1558-0865 2374-0159
Numerical Study with Nonlinear Finite Element Methods Based on Green-Lagrange Strain for Dynamics and Statics of Nonequatorial Space Elevator Peer-reviewed

Kuzuno, R, Dong, S, Takahashi, Y, Okada, T, Shizuno, Y, Otsuka, K, Makihara, K

Journal of Evolving Space Activities　2　197　2024/12

DOI： 10.57350/jesa.197 　
Moving Morphable Components Using Strain-Based Beam Geometry Description for Topology Optimization International-journal International-coauthorship Peer-reviewed

Keisuke Otsuka, Hiroki Yamashita, Hiroyuki Sugiyama, Shuonan Dong, Ryo Kuzuno, Kanjuro Makihara

AIAA Journal　62　(12)　4846-4854　2024/12
Publisher: American Institute of Aeronautics and Astronautics (AIAA)
DOI： 10.2514/1.j064272 　

ISSN： 0001-1452

eISSN： 1533-385X

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In the moving-morphable-component topology optimization, morphable components are introduced as a geometrical model mapped onto the background finite elements, and their shape parameters are utilized as design variables for topology optimization. Whereas a complex curved geometry ensuring [Formula: see text] continuity can be generated using existing curved components, the component curvatures cannot be selected as design variables in the existing methods; thus geometric constraints associated with curvatures cannot also be directly imposed. To address this issue, this study proposes a curvature-based morphable component by introducing the curvilinear geometry representation in the strain-based beam formulation. Since the proposed component is parameterized by curvatures using the curvilinear equation, the component curvatures can be utilized as the design variables. This allows for directly imposing curvature constraints on structural members, thereby accounting for the manufacturability of an optimal topology. It is demonstrated that a symmetric placement of the design variables using the midpoint curvilinear coordinate system is critical in ensuring convergence of the proposed curvature-based component optimization. The symmetric curvature component is further extended to account for multiple curvatures within a single component while ensuring [Formula: see text] continuity. Several examples are presented to demonstrate the benefits of the proposed multicurvature component for topology optimization.
Magnetostrictive Vibration Suppression via Integration of Current Amplification Negative Capacitor and Current Inversion Semi-Active Control Circuit Peer-reviewed

An Li, Yuusuke Kobayashi, Yushin Hara, Kanjuro Makihara

Journal of Intelligent Material Systems and Structures　36　(1)　53-73　2024/11/30
Publisher: SAGE Publications
DOI： 10.1177/1045389x241291217 　

ISSN： 1045-389X

eISSN： 1530-8138

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When attempting to suppress structural vibrations employing a magnetostrictive transducer, owing to the control force is generated from current, a larger amplification of the current entails superior control performance. The semi-active control theory uses the synchronized switching damping (SSD) technique for structural vibration suppression while requiring a minimal energy supply. However, the absence of external energy input limits the current amplification performance. To address this limitation, this study proposes a novel method that combines semi-active vibration suppression method with negative capacitance to improve the current amplification performance. The proposed circuit switches the circuit status between shunt, inductor-capacitor (LC) electrical oscillation, and negative capacitance circuits. A mathematical model was employed to analyze the current operation, suppression performance, and robustness of the proposed circuit. Further, machine learning and kernel regression model were employed to predict the optimal control force gain. Validation experiments conducted on a 10-bay truss structure identical to the simulation model show that the experimental results align with the simulation predictions. The vibration suppression rates of the proposed method under single-mode and multiple-mode vibrations reached 85.8% and 78.3%, respectively, which are 2.64 and 1.89 times higher than those achieved by conventional methods.
Nonlinear Dynamic Analysis Framework for Slender Structures Using the Modal Rotation Method Peer-reviewed

Yoshitaka Shizuno, Shuonan Dong, Ryo Kuzuno, Taiki Okada, Shugo Kawashima, Kanjuro Makihara, Keisuke Otsuka

Journal of Computational and Nonlinear Dynamics　20　(2)　021002　2024/11/20
Publisher: ASME International
DOI： 10.1115/1.4067201 　

ISSN： 1555-1415

eISSN： 1555-1423

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Abstract Owing to their low induced drag, high-aspect-ratio wings are often applied to aircraft, particularly high-altitude long-endurance aircraft. An analytical method that considers geometrical nonlinearity is necessary for the analysis of high-aspect-ratio wings as they tend to undergo large deformations. Nonlinear shell/plate or solid finite element methods are widely used for the static analysis of wing strength. However, an increase in the number of elements drastically increases the computational costs of nonlinear finite element methods owing to the complexity of wing shapes. The modal rotation method (MRM) can avoid this additional expense by analyzing large deformations based on modes and stiffness matrices obtained from any linear or linearized model. However, MRM has only been formulated as a static analysis method. In this study, a novel modal-based dynamic analysis framework, referred to as dynamic MRM (DMRM), is developed to analyze slender cantilever structures. This paper proposes a method to discretize dynamics by capitalizing on the fact that MRM considers geometrical nonlinearity based on deformed shapes. Additionally, a formulation method for the work performed by an external force modeled as a follower force is proposed. The energy stored in the structure was consistent with the work performed by an external force in each performed simulation. The proposed DMRM selects the modes used for analyses and systematically determines a time step according to the modes. DMRM achieved a 95% reduction in the calculation time compared with a nonlinear plate finite element method in a performed simulation.
Piezoelectric flutter energy harvesting: absolute nodal coordinate formulation model and wind tunnel experiment International-journal International-coauthorship Peer-reviewed

Taisei Mukogawa, Kento Shimura, Shuonan Dong, Koji Fujita, Hiroki Nagai, Masaki Kameyama, Yu Shi, Yu Jia, Constantinos Soutis, Hiroki Kurita, Fumio Narita, Yushin Hara, Kanjuro Makihara, Keisuke Otsuka

Mechanics Research Communications　143　104351-104351　2024/11
Publisher: Elsevier BV
DOI： 10.1016/j.mechrescom.2024.104351 　

ISSN： 0093-6413
A novel and efficient Hamiltonian dynamic analysis approach for constraint force determination in flexible multibody systems Peer-reviewed

Shuonan Dong, Ryo Kuzuno, Keisuke Otsuka, Kanjuro Makihara

Journal of Sound and Vibration　588　118517-118517　2024/10
Publisher: Elsevier BV
DOI： 10.1016/j.jsv.2024.118517 　

ISSN： 0022-460X
System Identification of Space Structures Subjected to Unknown Disturbances Using Piezoelectric Device Peer-reviewed

Tang, T, Hara, Y, Zhou, M, Otsuka, K, Makihara, K

Journal of Evolving Space Activities　2　158　2024/09

DOI： 10.57350/jesa.158 　
Semi-Active Structural Excitation Method to Realize Energy-Saving On-Orbit Identification International-journal Peer-reviewed

Hara, Y, Tang, T, Otsuka, K, Makihara, K

Journal of Evolving Space Activities　2　125　2024/08

DOI： 10.57350/jesa.125 　
State observer of multibody systems formulated using differential algebraic equations International-journal Invited Peer-reviewed

Taiki Okada, Shuonan Dong, Ryo Kuzuno, Yuya Takahashi, Yoshitaka Shizuno, Yushin Hara, Keisuke Otsuka, Kanjuro Makihara

Multibody System Dynamics　62　(4)　401-431　2024/06/06
Publisher: Springer Science and Business Media LLC
DOI： 10.1007/s11044-024-09995-z 　

ISSN： 1384-5640

eISSN： 1573-272X

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Abstract Multibody dynamics comprises methodologies for the design and analysis of mechanical systems, with Kalman filters being the principal state estimation methods. The Kalman filters are generally formulated for unconstrained systems, the dynamics of which are described by ordinary differential equations in state-space models. However, multibody systems are constrained systems, and the commonly used method to describe their dynamics involves using differential algebraic equations (DAEs) comprising differential and algebraic equations. The differential equations also include the Lagrange multipliers. Hence, incorporating multibody systems, described by DAEs into the scheme of Kalman filters, cannot be achieved straightforwardly, which facilitates different strategies being addressed. This study develops a novel method for converting DAEs into a state-space model. A transition model of the time derivatives of Lagrange multipliers and a Lagrange multiplier constraint vector are devised and used in the state and output equations, respectively. The continuous- and discrete-time extended Kalman filters (CEKF and DEKF) are constructed using the proposed state-space model, and state estimations are simulated on the benchmark planar four- and five-bar linkages. Further, a demonstration of system observability is conducted, and sensitivity to the initial state estimates is studied. These tests demonstrate that the proposed state-space model achieves observable systems and that both the CEKF and DEKF, constructed using the proposed state-space model, can estimate the states with a wide range of initial conditions.
High-Fidelity Flexible Multibody Model Considering Torsional Deformation for Nonequatorial Space Elevator International-journal International-coauthorship Peer-reviewed

Ryo Kuzuno, Shuonan Dong, Yuya Takahashi, Taiki Okada, Cheng Xue, Keisuke Otsuka, Kanjuro Makihara

Acta Astronautica　220　504-515　2024/05
Publisher: Elsevier BV
DOI： 10.1016/j.actaastro.2024.05.008 　

ISSN： 0094-5765
Comparison of Magnetostrictive-Actuated Semi-Active Control Methods Based on Synchronized Switching Peer-reviewed

An Li, Yuusuke Kobayashi, Yushin Hara, Keisuke Otsuka, Kanjuro Makihara

Actuators　13　(4)　143-143　2024/04/12
Publisher: MDPI AG
DOI： 10.3390/act13040143 　

eISSN： 2076-0825

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Three distinct synchronized switching circuits based on a magnetostrictive actuator are compared in this paper to examine their control mechanisms and circuit characteristics. These circuits include a semi-active shunt circuit, a semi-active current inversion and amplification circuit, and a semi-active automatic current inversion and amplification circuit. Each circuit type employs an additional electronic switch. The synchronized switching method enables the rational control of the circuit current generated by the magnetostrictive actuator to fulfill any desired control strategy. Simulation and experimental results on a 10-bay truss structure reveal that the three circuits can effectively adjust the polarity of the induced current as needed. The three circuits are then compared to thoroughly analyze their unique characteristics and explain their respective advantages and dis-advantages. Using the comparison results, various options available for control circuit design are demonstrated.
Energy harvesting using magnetostrictive materials: Effects of material anisotropy and stress multiaxiality International-journal International-coauthorship Peer-reviewed

Yuanyuan Liu, Laurent Daniel, Gael Sebald, Mickaël Lallart, Kanjuro Makihara, Benjamin Ducharne

Sensors and Actuators A: Physical　366　115017-115017　2024/02
Publisher: Elsevier BV
DOI： 10.1016/j.sna.2024.115017 　

ISSN： 0924-4247
Fractional-order modelling and dynamic analysis on a typical beam structure incorporated with a semi-active particle damping equipment International-journal International-coauthorship Peer-reviewed

Cheng Xue, Jinxiao Ye, Ryo Kuzuno, Keisuke Otsuka, Kanjuro Makihara, Zhaowang Xia

Powder Technology　433　119219-119219　2024/01
Publisher: Elsevier BV
DOI： 10.1016/j.powtec.2023.119219 　

ISSN： 0032-5910
Magnetostrictive-based induced current inversion and amplification: Semi-active vibration suppression for multiple-degree-of-freedom flexible structures Peer-reviewed

An Li, Yuusuke Kobayashi, Yushin Hara, Keisuke Otsuka, Kanjuro Makihara

Journal of Sound and Vibration　568　118069-118069　2024/01
Publisher: Elsevier BV
DOI： 10.1016/j.jsv.2023.118069 　

ISSN： 0022-460X
Establishment of Iterative Modeling Method for Spherical Tensegrity Structure Using Rotational Symmetry and Regular Polyhedron Configuration International-journal Peer-reviewed

Erina Mori, Yuta Matsumoto, Nariyuki Kawabata, Keisuke Otsuka, Kanjuro Makihara

Mechanics Research Communications　135　104217-104217　2023/11
Publisher: Elsevier BV
DOI： 10.1016/j.mechrescom.2023.104217 　

ISSN： 0093-6413
Analysis of energy conversion capability among various magnetostrictive materials for energy harvesting International-journal International-coauthorship Peer-reviewed

Yuanyuan Liu, Mickael Lallart, Benjamin Ducharne, Kanjuro Makihara, Gael Sebald

Smart Materials and Structures　32　(12)　125004-125004　2023/10/30
Publisher: IOP Publishing
DOI： 10.1088/1361-665x/ad0392 　

ISSN： 0964-1726

eISSN： 1361-665X

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Abstract This work addresses vibrational energy harvesting using magnetostrictive materials. In this field, materials with exceptional magneto-mechanical coupling properties (e.g. Galfenol, Terfenol-D) have attracted significant attention. Only a few magnetostrictive materials have been tested in devices, however, leaving the actual influence of these materials’ properties on the energy harvesting device open to question. This work compares an extensive range of ferromagnetic materials through analysis of their magnetic behavior under static stress. To enable fair comparison of the materials, a model was developed to interpolate their magnetic anhysteretic curves under fixed stress of σ = ±50 MPa. The energy harvesting process was then simulated using a theoretical Ericsson thermodynamic cycle, where the area represents the energy density. This approach estimates the ultimate energy density of the materials using a fair approach, without placing conditions on the applied magnetic field. The correlation between ultimate energy density and the magnetoelastic coefficient show that highly magnetostrictive materials achieve higher ultimate energy densities, as expected. In the low field range, it is however concluded that all materials exhibit energy densities of the same order of magnitude. Secondly, the magnetoelastic coefficient versus excitation field characteristics revealed an optimal bias magnetic field for each material. Finally, for realistic implementation, the paper considers a pre-stress in combination with a bias magnetic field and the small dynamic variations that result from currents induced in surrounding coils. A model was developed and revealed an optimum output energy density that was independent of the geometry and the coil. An energy harvesting figure of merit was then defined to enable a final comparison of the materials, encompassing both material characteristics and realistic applications. Under these working conditions and with all costs considered, some low-magnetostriction materials appeared able to compete with giant magnetostriction materials.
Performance of Magnetostrictive Small Wind Turbine using Fe–Co Base Clad Films International-journal Peer-reviewed

Ueno, T, Mukogawa, T, Dong, S, Nakaki, T, Kurita, H, Otsuka, K, Makihara, K, Narita, F

Advanced Engineering Materials　25　(19)　2300185　2023/09

DOI： 10.1002/adem.202300185 　
Moving Morphable Multicomponents Introducing Intent of Designer in Topology Optimization International-journal International-coauthorship Peer-reviewed

Otsuka, K, Dong, S, Kuzuno, R, Sugiyama, H, Makihara, K

AIAA Journal　61　(4)　1720-1734　2023/07

DOI： 10.2514/1.J062210 　
Energy Harvesting Using Magnetostrictive Transducer Based on Switch Control International-journal International-coauthorship Peer-reviewed

Li, A, Goto, K, Kobayashi, Hara, Y, Jia, Y, Shi, Y, Soutis, C, Kurita, H, Narita, F, Otsuka, K, Makihara, K

Sensors and Actuators: A. Physical　355　114303　2023/06

DOI： 10.1016/j.sna.2023.114303 　

ISSN： 0924-4247
Semi-Active Switching Vibration Control with Tree-Based Prediction and Optimization Strategy International-journal Peer-reviewed

Abe, M, Hara, Y, Otsuka, K, Makihara, K

Journal of Intelligent Material Systems and Structures　34　(4)　440-460　2023/04/02

DOI： 10.1177/1045389X221109253 　

ISSN： 1045-389X

eISSN： 1530-8138
Hamiltonian Formulation with Reduced Variables for Flexible Multibody Systems: Theory and Experiment International-journal Peer-reviewed

Dong, S, Otsuka, K, Makihara, K

Journal of Sound and Vibration　547　117535　2023/04/01

DOI： 10.1016/j.jsv.2022.117535 　
Investigation of Energy Harvesting Capabilities of Metglas 2605SA1 Peer-reviewed

Yuanyuan Liu, Benjamin Ducharne, Gaël Sebald, Kanjuro Makihara, Mickaël Lallart

Applied Sciences　13　(6)　3477-3477　2023/03/09
Publisher: MDPI AG
DOI： 10.3390/app13063477 　

eISSN： 2076-3417

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In the framework of electromechanical energy conversion devices for vibrational energy harvesting, magnetostrictive materials are an attractive alternative solution to the brittleness of piezoelectric materials. Electromagnetic systems have low voltage output at a low frequency while magnetostrictive materials are suitable for a larger frequency bandwidth. In this work, a special experimental emphasis is placed on Fe80Si9B11 (also known as Metglas 2605SA1) alloy. The ultimate energy conversion abilities are investigated by performing experimental Ericsson cycles as well as through theoretical predictions using a dedicated model for the magnetic curves at the material scale. Typical output magnetic energy densities ranged between 0.1 and 1 mJ/cm3/cycle under moderate stress (<100 MPa) and magnetic excitation (up to 4 kA/m). Apart from its energy conversion abilities, Metglas 2605SA1 also features attractive characteristics for realistic applications in microgenerators, such as a low price, which is an important advantage for the mass production and cost-effectiveness of the harvester. Furthermore, its soft magnetic property reduces the need for high magnetic fields and yields a well-adapted solution from a system point of view. It is therefore shown that this material is a suitable conversion material according to the available stress and magnetic excitation magnitudes, in addition to economic considerations.
Strategy for Performance Improvement in Piezoelectric Semi-Active Structural System Identification by Excluding Switching Failures using Pseudo-State Feedback International-journal Peer-reviewed

Hara, Y, Tang, T, Otsuka, K, Makihara, K

Mechanical Systems and Signal Processing　187　(15)　109906　2023/03/02

DOI： 10.1016/j.ymssp.2022.109906 　

ISSN： 0888-3270

eISSN： 1096-1216
Low-Energy-Consumption Structural Identification with Switching Piezoelectric Semi-Active Input International-journal Peer-reviewed

Hara, Y, Otsuka, K, Makihara, K

Mechanical Systems and Signal Processing　187　(15)　109914　2023/03/01

DOI： 10.1016/j.ymssp.2022.109914 　

ISSN： 0888-3270

eISSN： 1096-1216
Self-sensing method for semi-active structural identification by removing piecewise bias from piezoelectric voltage International-journal Peer-reviewed

Yushin Hara, Tianyi Tang, Keisuke Otsuka, Kanjuro Makihara

Sensors and Actuators A: Physical　347　113907　2022/10

DOI： 10.1016/j.sna.2022.113907 　

ISSN： 0924-4247
Consistent Strain-Based Multifidelity Modeling for Geometrically Nonlinear Beam Structures International-journal International-coauthorship Peer-reviewed

Otsuka, K, Wang, Y, Fujita, K, Nagai, H, Makihara, K

Transactions of ASME, Journal of Computational and Nonlinear Dynamics　17　(11)　111003　2022/09
Publisher: ASME International
DOI： 10.1115/1.4055310 　

ISSN： 1555-1415

eISSN： 1555-1423

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Abstract Conventional multifidelity modeling for slender structures such as folding-wing aircraft and offshore wind turbines does not allow the generation of multiple fidelity models that consistently use the same external force model, which complicates simulation program and design process. Although consistent absolute nodal coordinate formulation (ANCF)-based multifidelity modeling was recently proposed to address this inconsistency, it still has the following four problems: (1) a large number of generalized coordinates, (2) a large number of Lagrange multipliers, (3) difficulty in constraining high-frequency axial deformation, and (4) a lack of lower-fidelity models. The lower-fidelity models that have not yet been developed are torsion-only beam, extension-only truss, and bending-only beam models. The objective of this study was to develop a novel consistent strain-based multifidelity modeling framework that addresses these problems by leveraging new vector–strain transformations from ANCF to the strain-based beam formulation. We employed a hydrodynamic force model based on Morison's equation as an example to demonstrate all fidelity models obtained from the proposed strain-based framework consistently use the same external force model. We conducted five simulations to verify the proposed models. The consistent external force model for the hydrodynamic force was then validated by comparison with experimental data. The simulation results concurred with those of conventional models and experiments. Low-fidelity models exhibited over 98% reduction in calculation time compared to high-fidelity models, which helps in conceptual and initial designs that require a large number of parametric simulations.
Strain-Based Geometrically Nonlinear Beam Formulation for Rigid–Flexible Multibody Dynamic Analysis International-journal International-coauthorship Peer-reviewed

Keisuke Otsuka, Yinan Wang, Rafael Palacios, Kanjuro Makihara

AIAA Journal　60　(8)　4954-4968　2022/08/25
Publisher: American Institute of Aeronautics and Astronautics ({AIAA})
DOI： 10.2514/1.J061516 　
Joint Parameters for Strain-Based Geometrically Nonlinear Beam Formulation: Multibody Analysis and Experiment International-journal Peer-reviewed

Otsuka, K, Fujita, K, Nagai, H, Makihara, K

Journal of Sound and Vibration　538　(10)　117241-117241　2022/08/09
Publisher: Elsevier BV
DOI： 10.1016/j.jsv.2022.117241 　

ISSN： 0022-460X
Nonequatorial Space Elevator Analysis of Dynamics and Energy Using Three-Dimensional Nonlinear Finite Element Method Extended to Non-Inertial Coordinate System International-journal Peer-reviewed

Kuzuno, R, Dong, S, Okada, T, Otsuka, K, Makihara, K

IEEE Access　10　43964-43980　2022/05

DOI： 10.1109/ACCESS.2022.3168666 　
Recent Advances in the Absolute Nodal Coordinate Formulation: Literature Review from 2012 to 2020 International-journal International-coauthorship Peer-reviewed

Otsuka, K, Makihara, K, Sugiyama, H

Transactions of ASME, Journal of Computational and Nonlinear Dynamics　17　(8)　080803　2022/04

DOI： 10.1115/1.4054113 　
Comprehensive Predictive Control for Vibration Suppression Based on Piecewise Constant Input Formulation Peer-reviewed

Takamoto, I, Abe, M, Hara, Y, Otsuka, K, Makihara, K

Journal of Intelligent Material Systems and Structures　33　(7)　901-917　2022/04

DOI： 10.1177/1045389X211038703 　

ISSN： 1045-389X

eISSN： 1530-8138
Numerical and Experimental Analysis of Additively Manufactured Particle Dampers at Low Frequencies Peer-reviewed

Guo, H, Ichikawa, K, Sakai, H, Zhang, H, Zhang, X, Tsuruta, K, Makihara, K, Takezawa, A

Powder Technology　369　696-709　2022/01

DOI： 10.1016/j.powtec.2021.11.029 　

ISSN： 0032-5910

eISSN： 1873-328X
Geometrically nonlinear aeroelastic characteristics of highly flexible wing fabricated by additive manufacturing Peer-reviewed

Natsuki Tsushima, Masato Tamayama, Hitoshi Arizono, Kanjuro Makihara

Aerospace Science and Technology　117　106923-106923　2021/10
Publisher: Elsevier {BV}
DOI： 10.1016/j.ast.2021.106923 　
Adaptive and Robust Operation with Active Fuzzy Harvester under Nonstationary and Random Disturbance Conditions International-journal Peer-reviewed

Hara, Y, Otsuka, K, Makihara, K

Sensors　21　(11)　3913　2021/07

DOI： 10.3390/s21113913 　

ISSN： 1424-8220
Three-Dimensional Aeroelastic Model for Successive Analyses of High-Aspect-Ratio Wings International-journal Peer-reviewed

Otsuka, K, Wang, Y, Makihara, K

Transactions of ASME, Journal of Vibration and Acoustics　143　(6)　061006-41　2021/03
Publisher: ASME International
DOI： 10.1115/1.4050276 　

ISSN： 1048-9002

eISSN： 1528-8927

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<title>Abstract</title> Next-generation civil aircraft and atmospheric satellites will have high-aspect-ratio wings. Such a design necessitates successive analysis of static, frequency, and time-domain dynamic responses based on a three-dimensional nonlinear beam model. In this study, a new successive-analysis framework based on an absolute nodal coordinate formulation with mean artificial strains (ANCF-MAS) is developed. While retaining the advantages of other 3D ANCF approaches, such as constancy of the mass matrix and absence of velocity-dependent terms, ANCF-MAS uses the elastic force of the mean artificial strains to remove cross-sectional deformations that cause locking problems. The equation becomes a differential equation with an easily linearized elastic force that enables not only static and dynamic analyses but also frequency analysis using standard eigenvalue solvers. The solutions converge to the analytical frequencies without suffering from locking problems. A proposed successive-analysis method with model-order reduction reveals that the frequencies vary with the nonlinear static deformation because of the 3D deformation coupling. This reduced-order model agrees well with nonlinear models even when the wing experiences a large nonlinear dynamic deformation.
Assessment of Space Debris Collisions Against Spacecraft with Deorbit Devices International-journal Peer-reviewed

Tomizaki, H, Kobayashi, R, Suzuki, M, Karasawa, N, Hasegawa, S, Makihara, K

Advances in Space Research　67　(5)　1526-1534　2021/03

DOI： 10.1016/j.asr.2020.12.018 　
Absolute Nodal Coordinate Formulation with Vector-Strain Transformation for High Aspect Ratio Wings International-journal Peer-reviewed

Otsuka, K, Wang, Y, Makihara, K

Transactions of ASME, Journal of Computational and Nonlinear Dynamics　16　(1)　011007　2021/01

DOI： 10.1115/1.4049028 　
Damage Assessment for Electrodynamic Tape Tether Against Space Debris Impact Peer-reviewed

Fujiwara, M., Tomizaki, H., Hasegawa, S., Ohtani, K.,, Makihara, K.

Transactions of JSASS, Aerospace Technology Japan,　19　(1)　34-41　2021/01
Publisher: Japan Society for Aeronautical and Space Sciences
DOI： 10.2322/tastj.19.34 　

eISSN： 1884-0485
Piezoelectric Energy Enhancement Strategy for Active Fuzzy Harvester with Time-Varying and Intermittent Switching Peer-reviewed

Hara, Y, Zhou, M, Li, A, Otsuka, K, Makihara, K

Smart Materials and Structures　30　(1)　015038-015038　2020/12
Publisher: IOP Publishing
DOI： 10.1088/1361-665X/abca08 　

ISSN： 0964-1726

eISSN： 1361-665X
Structural and aerodynamic characteristics of additively manufactured flexible wings Peer-reviewed

Natsuki TSUSHIMA, Masato TAMAYAMA, Kanjuro MAKIHARA, Hitoshi ARIZONO

Transactions of the JSME (in Japanese)　86　(890)　19-00452　2020/10
Publisher: Japan Society of Mechanical Engineers
DOI： 10.1299/transjsme.19-00452 　

eISSN： 2187-9761
Predictive Switching Vibration Control Based on Harmonic Input Formulation International-journal Peer-reviewed

Takamoto, I, Abe, M, Hara, Y, Nakahara, T, Otsuka, K, Makihara, K

Sensors & Actuators: A. Physical　315　112271　2020/08

DOI： 10.1016/j.sna.2020.112271 　

ISSN： 0924-4247
Self-Sensing State Estimation of SSHI Energy Harvesters International-journal Peer-reviewed

Hara, Y, Yamamoto, Y, Makihara, K

Journal of Intelligent Material Systems and Structures　31　(20)　2326-2341　2020/08

DOI： 10.1177/1045389X20943944 　

ISSN： 1045-389X

eISSN： 1530-8138
Damage of Twisted Tape Tethers on Debris Collision Peer-reviewed

Yoshiyuki Uwamino, Michihiro Fujiwara, Honoka Tomizaki, Kiyonobu Ohtani, Kanjuro Makihara

International Journal of Impact Engineering　137　Article No. 103440-103440　2020/03
Publisher: Elsevier BV
DOI： 10.1016/j.ijimpeng.2019.103440 　

ISSN： 0734-743X
Multifidelity Modeling of Deployable Wings: Multibody Dynamic Simulation and Wind Tunnel Experiment International-journal International-coauthorship Peer-reviewed

Otsuka, K, Wang, Y, Fujita, K, Nagai, H, Makihara, K

AIAA Journal　57　(10)　4300-4311　2019/10

DOI： 10.2514/1.J058676 　
Geometrically nonlinear electro-aeroelastic framework for morphing wing with piezoelectric actuators Peer-reviewed

Natsuki TSUSHIMA, Hitoshi ARIZONO, Tomohiro YOKOZEKI, Kanjuro MAKIHARA

Transactions of the JSME　85　(979)　Article No. 18-00506　2019/10

DOI： 10.1299/transjsme.18-00506 　
Compact, Digital and Self-Powered Piezoelectric Vibration Energy Harvester with Generation Control using Voltage Measurement Circuit Peer-reviewed

Yushin Hara, Kensuke Saito, Kanjuro Makihara

Sensors & Actuators: A. Physical　299　Article No. 111609　2019/09

DOI： 10.1016/j.sna.2019.111609 　

ISSN： 0924-4247
Fracture Investigation of Hollow Cylindrical Tether during Space Debris Impact Peer-reviewed

Sasahara, K, Uwamino, Y, Hasegawa, S, Makihara, K

Transactions of JSASS, Aerospace Technology Japan　17　(3)　383-391　2019/05

DOI： 10.2322/tastj.17.383 　
Absolute nodal coordinate beam element for modeling flexible and deployable aerospace structures Peer-reviewed

Keisuke Otsuka, Kanjuro Makihara

AIAA Journal　57　(3)　1343-1346　2019/03

DOI： 10.2514/1.J057780 　

ISSN： 0001-1452
Versatile absolute nodal coordinate formulation model for dynamic folding wing deployment and flutter analyses International-journal International-coauthorship Peer-reviewed

Keisuke Otsuka, Yinan Wang, Kanjuro Makihara

Transactions of the ASME, Journal of Vibration and Acoustics　141　(1)　Article No. 011014　2019/02/01

DOI： 10.1115/1.4041022 　

ISSN： 1048-9002

eISSN： 1528-8927
Optimal Placement of Piezoelectric Element for Energy Harvesting from Supersonic Panel Flutter Oscillation of Plates Peer-reviewed

亀山正樹, 笠原尚哉, 石川皓士, 槙原幹十朗

日本航空宇宙学会論文集　66　(2)　47-52　2018/04

DOI： 10.2322/jjsass.66.47 　
Deployment simulation using absolute nodal coordinate plate element for next-generation aerospace structures Peer-reviewed

Keisuke Otsuka, Kanjuro Makihara

AIAA Journal　56　(3)　1266-1276　2018/03

DOI： 10.2514/1.J056477 　

ISSN： 0001-1452
Structural evaluation for electrodynamic tape tethers against hypervelocity space debris impacts Peer-reviewed

Kanjuro Makihara, Shu Kondo

AIAA, Journal of Spacecraft and Rockets　55　(2)　462-472　2018/01
Publisher: American Institute of Aeronautics and Astronautics Inc.
DOI： 10.2514/1.A34023 　

ISSN： 0022-4650
Bayesian Cloud Extraction for Assessment of Space-Debris Impact Using Conditional Entropy Peer-reviewed

Kanjuro Makihara, Yoshihiro Oki

AIAA, Journal of Spacecraft and Rockets　54　(6)　1235-1245　2017/11

DOI： 10.2514/1.A33856 　

ISSN： 0022-4650

eISSN： 1533-6794
Deployable wing model considering structural flexibility and aerodynamic unsteadiness for deployment system design International-journal International-coauthorship Peer-reviewed

Keisuke Otsuka, Yinan Wang, Kanjuro Makihara

Journal of Sound and Vibration　408　105-122　2017/11

DOI： 10.1016/j.jsv.2017.07.012 　

ISSN： 0022-460X

eISSN： 1095-8568
Analog self-powered harvester achieving switching pause control to increase harvested energy Peer-reviewed

Kanjuro Makihara, Kei Asahina

Smart Materials and Structures　26　(5)　Article No. 055007　2017/05

DOI： 10.1088/1361-665X/aa676c 　

ISSN： 0964-1726

eISSN： 1361-665X
Strategy for enhancing the active harvesting of piezoelectric energy Peer-reviewed

Kenji Yoshimizu, Yuta Yamamoto, Kei Asahina, Kanjuro Makihara

Journal of Intelligent Material Systems and Structures　28　(8)　1059-1070　2017/05

DOI： 10.1177/1045389X16672592 　

ISSN： 1045-389X

eISSN： 1530-8138
Energy Investigation into Damage Evaluation of Pressure Wall at Oblique Impacts Peer-reviewed

Makihara, K., Oki, Y., Hasegawa, S.

Transactions of JSASS, Aerospace Technology Japan　14　(ists30)　Pr_1-Pr_8　2016/09
Publisher: THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES
DOI： 10.2322/tastj.14.Pr_1 　

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<p>To analyze the shielding performance of Whipple bumpers, it is essential to clarify the characteristics of a debris cloud that is created owing to a hypervelocity impact. However, lesser attention has been paid on studies on the debris clouds produced by oblique impacts compared to those produced by normal impacts. We thus evaluate the damage of the pressure walls after oblique impacts. Two energy indices are proposed that can determine the destructive capability to the pressure wall. The proposed energy indices are related to the kinematic energy of the debris clouds. These energy indices are demonstrated to show the destructive capability and to uniformly evaluate the damage of the pressure wall. The spatial distributions of the kinetic energy are calculated by the smoothed particle hydrodynamics simulation. In addition to the simulation, impact experiments are conducted with two pieces of apparatus: a two-stage light gas sun and a single-stage powder gun. We discussed the correlation between the characteristics of the debris clouds at the oblique impacts and the damage of the pressure walls.</p>
スペースデブリ衝突におけるアルミテザー破断基準の算出方法 Peer-reviewed

近藤周, 沖義弘, 長谷川直, 槙原幹十朗

航空宇宙技術　15　79-84　2016/07/09
Publisher: THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES
DOI： 10.2322/astj.15.79 　

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Since a large number of debris exists in the low earth orbit (LEO), deorbiting of the debris is an important subject in the space development. Electro-dynamic tether (EDT) system is a promising method to remove the debris from the LEO. The EDT is cost-effective because the material of the tether is cheap and the propellant is not required. However, the diameter of the tether is thin and the length is very long. Then, the EDT has a high risk to be severed by small meteoroids and the other small debris. To assess the survivability of the EDT, sever criteria are needed and have been proposed. However, the previously proposed criteria are different from each other, and they are not well grounded. In this paper, we propose a new experimental method to determine sever criteria based on the experimental results. Then, we carry out hypervelocity impact experiments to determine the new criteria and compare them with the previous criteria. Moreover, we calculate the survivability of an EDT system on the basis of proposed sever criteria.
Aeroelastic deployable wing simulation considering rotation hinge joint based on flexible multibody dynamics Peer-reviewed

Keisuke Otsuka, Kanjuro Makihara

Journal of Sound and Vibration　369　147-167　2016/05

DOI： 10.1016/j.jsv.2016.01.026 　

ISSN： 0022-460X

eISSN： 1095-8568
Survival Probability of Hollow Cylindrical Mesh Tether Under Space Debris Impact Peer-reviewed

Kanjuro Makihara, Norihiko Matsumoto

AIAA, Journal of Spacecraft and Rockets　53　(3)　520-527　2016/05

DOI： 10.2514/1.A33379 　

ISSN： 0022-4650

eISSN： 1533-6794
振動ハーベスティングにおける発電エネルギ増加制御の研究 Peer-reviewed

槙原幹十朗, 吉水謙司, 竹澤晃弘

日本機械学会論文集　82　(835)　Article No. 15-00499-00499-15-00499　2016/03/25
Publisher: The Japan Society of Mechanical Engineers
DOI： 10.1299/transjsme.15-00499 　

ISSN： 2187-9761

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In this paper, we propose a new control method to boost electrical energy. Vibration energy harvesting extracts electrical energy from structural vibrations. To boost the harvested energy, synchronized switching harvesting on inductor (SSHI) technique has been proposed and developed. With a harvesting circuit including an inductor and a switch, SSHI technique controls electric current by switching action. The technique effectively converts the mechanical energy of structural vibration to electrical energy, but at the same time, it suppresses the amplitude of mechanical vibration. Because the voltage generated by a piezoelectric transducer depends on the vibrational amplitude, the decrease in the vibrational amplitude leads to the reduction in the generated voltage. As a result, the harvested energy is decreased. We confirm that the vibrational amplitude and the harvested energy are decreased with SSHI. To solve this critical problem, we devise a new control strategy to boost the harvested energy. The original SSHI conducts switching action at every peaks of vibrational displacement. In order to avoid the suppression of vibration, our control strategy is designed to temporarily stop the switching action. The structure is excited to vibrate by a vibration exciter. While switching action is stopped, the vibrational amplitude will be recovered from the suppressed amplitude by the excitation force, which makes the vibrational amplitude as high as possible. Accordingly, the harvested energy will increase. We experimentally demonstrate that our control strategy holds back only 12.6% reduction of the vibrational amplitude, while the original SSHI causes as much as 76.4% reduction. The piezoelectric voltage is up to 2.9 times greater than that with the original SSHI. Experimental results show that the proposed control strategy can generate 8.4 times larger electrical energy than the original SSHI.
質量変化を伴う柔軟多体システムのMBD解析 Peer-reviewed

槙原幹十朗, 吉川尭志, 菅原佳城

日本機械学会論文集　82　(834)　Article No. 15-00504　2016/02/25
Publisher: The Japan Society of Mechanical Engineers
DOI： 10.1299/transjsme.15-00504 　

ISSN： 2187-9761

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In this paper, we propose a formulation method for flexible multi-body systems with mass loss. The method derives the equation of motion using the velocity transformation method, in consideration of the shift of center-of-mass. There are three research purposes in this paper. The first purpose is to extend the velocity transformation method for describing flexible bodies. Conventional velocity transformation method has only focused on the dynamics of rigid bodies. The restoring force due to flexibility is introduced to the equation of motion as generalized external force. Our proposed method can deal with rigid, elastic, or geometric connections, such as hinge and sliding joints. The second purpose is to formulate flexible multi-body systems with mass loss. Conventional Kanes technique only deals with the dynamics of particles. On the other hand, the proposed method can express the dynamics for the mixed model of particles and rigid bodies, where particle elements express the mass change of the system. The third purpose is to verify the high usefulness of our method for the dynamics simulation of a flying rocket. The rocket is a representative multi-body system whose mass varies. We analyze the flight characteristics, such as pitch angle, for rocket models associated with the variation in stiffness. The simulation indicates that the mass loss greatly affects the dynamics of rockets. The calculation demonstrates a large difference in the flight dynamics between rigid and flexible models.
Parametric Studies for the Aeroelastic Analysis of Multibody Wings Peer-reviewed

OTSUKA Keisuke, MAKIHARA Kanjuro

Transactions of JSASS, Aerospace Technology Japan　14　(30)　Pc_33-Pc_42　2016
Publisher: THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES
DOI： 10.2322/tastj.14.Pc_33 　

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<p>Air density on Mars is much lower than that on Earth. To generate sufficient lifting force to fly, Mars-airplanes need to have a larger wing area than Earth-airplanes. The recently developed Mars-airplanes have multibody wings that can be folded and deployed to realize larger wing area and compactness. Aeroelastic analyses of the wings are necessary to avoid catastrophic behaviors, such as flutter or divergence. However, conventional aeroelastic analysis methods cannot be applied to the multibody wing because these wings have mechanical joints for connecting wing bodies, and thus, they differ significantly from conventional wings. In this paper, a new analysis method that can be applied to the multibody wing is explained. The method combines aerodynamics, multibody dynamics theory, and absolute nodal coordinate formulation. By using this method, we simulate the aeroelastic motion of multibody wings. We investigate the changes in aeroelastic motion when we change the number of the wing bodies and the structural parameters.</p>
Survivability Evaluation of Electrodynamic Tethers Considering Dynamic Fracture in Space-Debris Impact Peer-reviewed

Kanjuro Makihara, Ryo Takahashi

AIAA, Journal of Spacecraft and Rockets　53　(1)　209-216　2016/01

DOI： 10.2514/1.A33328 　

ISSN： 0022-4650

eISSN： 1533-6794
エネルギー回生式セミアクティブ振動制御装置に対するSRS制約を導入した圧電アクチュエータ最適配置 Peer-reviewed

中野陽平, 竹澤晃弘, 槙原幹十朗, 北村充

日本機械学会論文集　81　(830)　Article No. 15-00191-00191-15-00191　2015/10/25
Publisher: The Japan Society of Mechanical Engineers
DOI： 10.1299/transjsme.15-00191 　

ISSN： 2187-9761

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Vibration suppression is one of the most important problems in the design and operation of space structures. Due to limited launch capabilities, such structures need to be extremely light-weight although some structures succumb to vibrations because of their low structural stiffness. Moreover, vibrational energy is hard to disperse in the vacuum of space, in contrast to ground environments. These problems can be overcome by vibration control schemes.Vibration control schemes can be categorized into three types: active, passive and semi-active. The semi-active vibration control (SAVC), dynamically changes some property of the structure according to feedback from the state, without adding extra energy. SAVC systems are usually able to achieve higher performance than the passive vibration control schemes without the disadvantages of the active vibration control systems. In this study, optimal piezo actuator layout is solved by the introduction of Shock Response Spectrum (SRS) constraint which evaluates vibration and a shock.
Synthetic Assessment of Self-Powered Energy-Harvesting Including Robustness Evaluation Peer-reviewed

Yamamoto, Y., Yoshimizu, K., Makihara, K.

Mechanical Engineering Journal　2　(5)　Article No. 14-00549　2015/10/15
Publisher: The Japan Society of Mechanical Engineers
DOI： 10.1299/mej.14-00549 　

ISSN： 2187-9745

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We have developed a smart energy harvester that generates electrical energy from multi-modal vibrations. The harvester consists of a digital processor and a piezoelectric sensor, which allows the application of a technical method to improve the energy-conversion efficiency. The method is implemented by measuring the vibration displacements, processing the data digitally, and adequately regulating electric switches. These operations are managed by a built-in digital processor. The driving power for the digital processor is satisfied with a part of the energy harvested from structural vibrations. Thus, the harvester operates flexibly with the digital processor to enhance electrical energy generation, and requires neither batteries nor an external power supply. We refer to the proposed device as a self-powered energy harvester. An advantage of digital processing is that observations by a Kalman filter can be used to estimate modal structural vibrations. In addition to reducing sensor noise, the digital filter extracts modal values from the measured displacement data. Here, we describe the basic configuration of the proposed harvester and demonstrate energy harvesting from multi-modal vibrations for a structure with 2 degrees of freedom (DOF). We assess the internal energy consumption of self-powered control devices, such as the digital processor and DC/DC converter. In addition, we show the robustness of the proposed harvester by conducting a harvesting experiment with electrical noise. The results demonstrate that the self-powered energy harvester generates more electrical energy from 2DOF vibrations than does a conventional harvester, and accurately operates under noisy conditions.
Power Evaluation of Advanced Energy-Harvester Using Graphical Analysis Peer-reviewed

Makihara, K., Takezawa, A., Shigeta, D., Yamamoto, Y.

Mechanical Engineering Journal　2　(4)　Article No. 14-00444　2015/08/15
Publisher: The Japan Society of Mechanical Engineers
DOI： 10.1299/mej.14-00444 　

ISSN： 2187-9745

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In this paper, we present the benefits of bond-graph analysis for mechanical-electrical systems, which are energy-harvesters based on structural vibrations and electric loads. The bond-graph is an energy-based approach to describing physical-dynamic systems. It shows power flow graphically, which helps us understand the behavior of complicated systems in simple terms. Energy-harvesting involves conversion of power in mechanical form to the electrical one and the bond-graph is a good tool to analyze this flow. The bond-graph method can be used to calculate the dynamics of the combining mechanical and electrical systems simultaneously. The biggest advantage of the bond-graph technique is that it can be used with the systems that are subject to component alternations, such as inserting, removing and swapping. The bond-graph method involves solving simultaneous algebraic equations, instead of differential equations. On the other hand, in common simulation methods, such as solving differential equations, it is difficult to change the number of components because the differential equations will have to be reconstructed. Because the bond-graph has not been used for harvesting analysis, bond-graph models for harvesting need to be created in advance of numerical analysis. In this paper, we first proposed a piezoelectric model that matches the bond-graph method. We also propose a diode-bridge model and a harvesting controller model that are suitable for bond-graph analysis. We then analyze a self-powered energy harvester that has multi-bifurcated and looped flow in the mechanical-electrical coupled dynamics.
Using Classification Error Rate a New Image-Extraction Method of Debris Cloud at Hypervelocity Impact Peer-reviewed

Yoshihiro OKI, Norihiko MATSUMOTO, Kiyonobu OHTANI, Sunao HASEGAWA, Kanjuro MAKIHARA

JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES　63　(4)　157-165　2015/07/28
Publisher: Japan Society for Aeronautical and Space Sciences
DOI： 10.2322/jjsass.63.157 　

ISSN： 1344-6460
Transient Analysis of Self-Powered Energy-Harvesting using Bond-Graph Peer-reviewed

Makihara, K., Shigeta, D., Fuijta, Y., Yamamoto, Y.

International Journal of Aerospace System Engineering　2　(1)　47-52　2015/07/01
Self-reliant wireless health monitoring based on tuned-mass-damper mechanism Peer-reviewed

Kanjuro Makihara, Hidekazu Hirai, Yuta Yamamoto, Hisao Fukunaga

SMART STRUCTURES AND SYSTEMS　15　(6)　1625-1642　2015/06

DOI： 10.12989/sss.2015.15.6.1625 　

ISSN： 1738-1584
A novel controller to increase harvested energy from negating vibration-suppression effect Peer-reviewed

Kanjuro Makihara, Yuta Yamamoto, Kenji Yoshimizu, Chikahiro Horiguchi, Hitoshi Sakaguchi, Katsumi Fujimoto

Smart Materials and Structures　24　(3)　Article No. 037005　2015/03

DOI： 10.1088/0964-1726/24/3/037005 　

ISSN： 0964-1726

eISSN： 1361-665X
Development of Wireless Health Monitoring System for Isolated Space Structures Peer-reviewed

Yuta YAMAMOTO, Kanjuro MAKIHARA

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN　12　55-60　2014/09/22
Publisher: Japan Society for Aeronautical and Space Sciences
DOI： 10.2322/tastj.12.55 　

ISSN： 1884-0485
Layout optimization methodology of piezoelectric transducers in energy-recycling semi-active vibration control systems Peer-reviewed

Akihiro Takezawa, Kanjuro Makihara, Nozomu Kogiso, Mitsuru Kitamura

Journal of Sound and Vibration　333　(2)　327-344　2014/01

DOI： 10.1016/j.jsv.2013.09.017 　

ISSN： 0022-460X

eISSN： 1095-8568
過渡応答に対する完全セルフパワード・デジタル振動制御システムの特性 Peer-reviewed

山本雄大, 鈴木孝宜, 槙原幹十朗

日本機械学会論文集C編　79　(808)　490-493　2013/12/25
Publisher: The Japan Society of Mechanical Engineers
DOI： 10.1299/kikaic.79.5015 　

ISSN： 0387-5024

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In the previous report, we presented a self-powered digital system for vibration control. The self-powered system automatically measures the displacement of vibrating structure and digitally calculates the vibration state. Then it regulates its electric switches and achieves effective vibration suppression. Especially, it harvests electrical energy from structural vibration and utilizes the energy for activating itself. Some experiments with the self-powered digital system were reported in the previous report, which showed good results only in the steady-state condition. In this note, we demonstrate how the system works in the transient-state. These experiments clearly show the processor's transition between the wake-up and the sleep modes according to the vibration amplitude.
Mamdani推論法に基づく複数モード振動のロバスト制御 Peer-reviewed

槙原幹十朗, 黒石千香子, 福永久雄

知能と情報　25　(3)　730-739　2013/07/02
Publisher: Japan Society for Fuzzy Theory and Intelligent Informatics
DOI： 10.3156/jsoft.25.730 　

ISSN： 1347-7986

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A new robust semi-active method is proposed to suppress various multimodal vibrations. The robust control consists of Mamdani method and semi-active threshold control. We demonstrate it to be applicable to multimodal vibration suppression for vibrating structures. Our proposed control only requires the information of natural frequencies for the real-time feedback control. We carried out experiments of vibration suppression using our Mamdani-logic-based control and conventional threshold control, and compared their suppression performances. The experiment indicates that our proposed control can adapt to conditions outside the assumed range of excitations. The proposed control displays good robustness when faced with sudden changes in vibrations, and also displays high suppression performance.
Adaptive multimodal vibration suppression using fuzzy-based control with limited structural data Peer-reviewed

Kanjuro Makihara, Chikako Kuroishi, Hisao Fukunaga

Smart Materials and Structures　22　(7)　Article No. 075031　2013/07

DOI： 10.1088/0964-1726/22/7/075031 　

ISSN： 0964-1726 1361-665X
過渡応答における構造・電気連成系の位相遷移に着目した連成統合制御 Peer-reviewed

槙原幹十朗, 下瀬滋

日本機械学会論文集C編　79　(801)　1616-1627　2013/06/01
Publisher: The Japan Society of Mechanical Engineers
DOI： 10.1299/kikaic.79.1616 　

ISSN： 0387-5024

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An integrated active-passive control for structural and electrical coupled systems is presented to achieve an effective vibration attenuation of vibrating structures. The transition of relative phase between displacement and voltage is focused on. The cooperative combined system is composed of both tuned electrical resonance and bang-bang active methods. Switching logics are devised for the integrated control based on the interactive relations between mechanical and electrical vibrations. Furthermore, this paper presents quite an interesting phenomenon, i.e., the relative phase-transition of electrical resonance in transient response, which cannot be found in steady-state condition. This phase-transition has been ignored in spite of an essential factor for integrated systems. Experiments on a 10-bay truss structure demonstrate that the integrated active-passive control enhances vibration attenuation of conventional bang-bang active systems
Energy Harvesting Using an Analog Circuit under Multimodal Vibration Peer-reviewed

Shigeru Shimose, Kanjuro Makihara, Junjiro Onoda

Smart Materials Research　2013　(Article No. 736487)　1-6　2013/01
Publisher: Hindawi Limited
DOI： 10.1155/2013/736487 　

ISSN： 2090-3561
Innovative Digital Self-Powered Autonomous System for Multimodal Vibration Suppression Peer-reviewed

Kanjuro Makihara, Shinsuke Takeuchi, Shigeru Shimose, Junjiro Onoda

AIAA Journal　50　(9)　2004-2011　2012/09

DOI： 10.2514/1.j051560 　

ISSN： 0001-1452

eISSN： 1533-385X
Supersonic Flutter Utilization for Effective Energy-Harvesting Based on Piezoelectric Switching Control Peer-reviewed

Kanjuro Makihara, Shigeru Shimose

Smart Materials Research　2012　(Article No. 181645)　1-10　2012/05/14
Publisher: Hindawi Limited
DOI： 10.1155/2012/181645 　
完全セルフパワード・デジタル振動制御システムの開発 Peer-reviewed

槙原幹十朗, 下瀬滋, 小野田淳次郎

日本機械学会論文集C編　78　(789)　1440-1450　2012/05/01
Publisher: The Japan Society of Mechanical Engineers
DOI： 10.1299/kikaic.78.1440 　

ISSN： 0387-5024

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We report herein on how we developed our innovative digital self-powered autonomous system for vibration controller using a digital micro-processor. The invented unit is a completely self-powered control system that does not require any external power-supply at all. Nevertheless, this digital, self-directive, and self-powered approach enables the system to be programmable and thus versatile in control scheme. The digital-autonomous controller is much more advanced and progressive than conventional analog-autonomous ones that are clumsy and awkward. This digital system can be implemented in multiple-input multiple-output systems to suppress even complicated structural vibrations. This is quite useful for various applications to energy-saving or energy-shortage systems, such as large space structures, artificial satellites, and isolated lunar bases, which all are vulnerable to long night-time without solar-power. Experiments demonstrate that displacement is reduced by as much as 35 %, which is quite a striking and attractive number. Energy dissipation in experiments is measured by various cases. Furthermore, we investigate the influence of voltage offset of AD port of the microprocessor both on estimation error and on suppression performance.
超高速翼フラッタを用いた圧電スッチングによる環境発電機構 Peer-reviewed

槙原幹十朗, 下瀬滋, 小野田淳次郎

日本風工学会論文集　37　(2)　35-42　2012/04/01
Publisher: Japan Association for Wind Engineering
DOI： 10.5359/jwe.37.35 　

ISSN： 1349-3507

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Eco-generation of electrical energy harvested from the flutter phenomenon of a plate wing is studied using the quasi-steady aerodynamic theory and the finite element method. The wing is modeled as sounding rockets' wings. We harvest electrical energy from supersonic flutter by using piezoelectric patches and electric devices. To assess their harvesting performances, we simulate flutter dynamics of the plate wing to which piezoelectric patches are attached. We demonstrate that our harvesting system can generate 10 times more electrical energy from wing flutter than conventional harvesting systems can.
Comparison of Analog and Digital Self-Powered Systems in Multimodal Vibration Suppression Peer-reviewed

Shigeru Shimose, Kanjuro Makihara, Junjiro Onoda

Smart Materials Research　2012　(Article No. 287128)　1-9　2012/02/22
Publisher: Hindawi Limited
DOI： 10.1155/2012/287128 　

ISSN： 2090-3561
Electrically-induced actuation for open-loop control to cancel self-excitation vibration Peer-reviewed

Kanjuro Makihara, Horst Ecker

SMART STRUCTURES AND SYSTEMS　9　(2)　189-206　2012/02

DOI： 10.12989/sss.2012.9.2.189 　

ISSN： 1738-1584
Reliable and Evolvable Vibration Suppression by Self-Powered Digital Vibration Control Peer-reviewed

Shinsuke Takeuchi, Kanjuro Makihara, Junjiro Onoda

Journal of Vibration and Acoustics　134　(2)　2012/01/18

DOI： 10.1115/1.4005027 　

ISSN： 1048-9002

eISSN： 1528-8927
Portable Power Scavenging from Structural Vibrations using Autonomous Self-Powered Device Peer-reviewed

Kanjuro MAKIHARA, Shinsuke TAKEUCHI, Shigeru SHIMOSE, Junjiro ONODA

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN　10　(ists28)　Pc_13-Pc_18　2012
Publisher: Japan Society for Aeronautical and Space Sciences
DOI： 10.2322/tastj.10.pc_13 　

ISSN： 1884-0485

eISSN： 1884-0485
Energy-efficiency enhancement and displacement-offset elimination for hybrid vibration control Peer-reviewed

Kanjuro Makihara

Smart Structures and Systems　10　(3)　193-207　2012
Publisher: Techno Press
DOI： 10.12989/sss.2012.10.3.193 　

ISSN： 1738-1991 1738-1584
Development of a Self-Powered Digital System for Vibration Control

Kanjuro MAKIHARA, Shigeru SHIMOSE, Shinsuke TAKEUCHI, Junjiro ONODA

Journal of System Design and Dynamics　6　(5)　583-596　2012
Publisher: Japan Society of Mechanical Engineers
DOI： 10.1299/jsdd.6.583 　

ISSN： 1881-3046

eISSN： 1881-3046
Assessment of Electrical Influence of Multiple Piezoelectric Transducers' Connection on Actual Satellite Vibration Suppression Peer-reviewed

Shimose, S., Makihara, K., Minesugi, K., Onoda, J.

Smart Materials Research　2011　(Article No. 686289)　1-8　2011/12/30
Publisher: Hindawi Limited
DOI： 10.1155/2011/686289 　

ISSN： 2090-3561

eISSN： 2090-357X

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We conduct comprehensive investigation of a semiactive vibration suppression method using piezoelectric transducers attached to structures. In our system, piezoelectric transducers are connected to an electric circuit composed of the diodes, an inductance, and a selective switch. Our method (SSDI) makes better use of counterelectromotive force to suppress the vibration, instead of simple dissipation of vibration energy. We use an actual artificial satellite to verify their high performance compared to conventional semi-active methods. As a consequence, we demonstrate that our semi-active switching method can suppress the vibration of the real artificial satellite to as much as 50% amplitude reduction. In our experiment, we reveal that the suppression performance depends on how multiple piezoelectric transducers are connected, namely, their series or parallel connection. We draw two major conclusions from theoretical analysis and experiment, for constructing effective semi-active controller using piezoelectric transducers. This paper clearly proves that the performance of the method is the connection (series or parallel) of multiple piezoelectric transducers and the their resistances dependent on frequency.
Fuselage panel noise attenuation by piezoelectric switching control Peer-reviewed

Kanjuro Makihara, Takeya Miyakawa, Junjiro Onoda, Kenji Minesugi

SMART MATERIALS & STRUCTURES　19　(8)　1-10　2010/08

DOI： 10.1088/0964-1726/19/8/085022 　

ISSN： 0964-1726
Performance of simple and sophisticated control in energy-recycling semi-active vibration suppression Peer-reviewed

Junjiro Onoda, Kanjuro Makihara

JOURNAL OF VIBRATION AND CONTROL　14　(3)　417-436　2008/03

DOI： 10.1177/1077546307080027 　

ISSN： 1077-5463
A self-sensing method for switching vibration suppression with a piezoelectric actuator Peer-reviewed

Kanjuro Makihara, Junjiro Onoda, Kenji Minesugi

SMART MATERIALS & STRUCTURES　16　(2)　455-461　2007/04

DOI： 10.1088/0964-1726/16/2/025 　

ISSN： 0964-1726
Numerical analysis of powerful shock absorber utilizing particle-dispersion ER fluid Peer-reviewed

Kanjuro Makihara, Junjiro Onoda, Kenji Minesugi

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES　49　(166)　203-210　2007/02

DOI： 10.2322/tjsass.49.203 　

ISSN： 0549-3811
Comprehensive assessment of semi-active vibration suppression including energy analysis Peer-reviewed

Kanjuro Makihara, Junjiro Onoda, Kenji Minesugi

JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME　129　(1)　84-93　2007/02

DOI： 10.1115/1.2345675 　

ISSN： 1048-9002
Using tuned electrical resonance to enhance bang-bang vibration control Peer-reviewed

Kanjuro Makihara, Junjiro Onoda, Kenji Minesugi

AIAA JOURNAL　45　(2)　497-504　2007/02

DOI： 10.2514/1.21736 　

ISSN： 0001-1452
Observability of self-sensing system using extended Kalman filter Peer-reviewed

Kanjuro Makihara, Junjiro Onoda, Takuya Yabu

AIAA JOURNAL　45　(1)　306-308　2007/01

DOI： 10.2514/1.24648 　

ISSN： 0001-1452
Flutter Suppression of Cantilevered Plate Wing using Piezoelectric Materials Peer-reviewed

Kanjuro Makihara, Junjiro Onoda, Kenji Minesugi

International Journal of Aeronautical and Space Sciences　7　(2)　70-85　2006/11
Publisher: The Korean Society for Aeronautical {\&} Space Sciences
DOI： 10.5139/ijass.2006.7.2.070 　

ISSN： 2093-274X
Low energy dissipation electric circuit for energy harvesting Peer-reviewed

Kanjuro Makihara, Junjiro Onoda, Takeya Miyakawa

SMART MATERIALS & STRUCTURES　15　(5)　1493-1498　2006/10

DOI： 10.1088/0964-1726/15/5/039 　

ISSN： 0964-1726
Novel approach to self-sensing actuation for semi-active vibration suppression Peer-reviewed

Kanjuro Makihara, Junjiro Onoda, Kenji Minesugi

AIAA JOURNAL　44　(7)　1445-1453　2006/07

DOI： 10.2514/1.16018 　

ISSN： 0001-1452
Investigation of performance in suppressing various vibrations with energy-recycling semi-active method Peer-reviewed

K Makihara, J Onoda, M Tsuchihashi

ACTA ASTRONAUTICA　58　(10)　506-514　2006/05

DOI： 10.1016/j.actaastro.2006.01.007 　

ISSN： 0094-5765
New approach to semi-active vibration isolation to improve the pointing performance of observation satellites Peer-reviewed

K Makihara, J Onoda, K Minesugi

SMART MATERIALS & STRUCTURES　15　(2)　342-350　2006/04

DOI： 10.1088/0964-1726/15/2/014 　

ISSN： 0964-1726
Behavior of piezoelectric transducer on energy-recycling semiactive vibration suppression Peer-reviewed

K Makihara, J Onoda, K Minesugi

AIAA JOURNAL　44　(2)　411-413　2006/02

DOI： 10.2514/1.9811 　

ISSN： 0001-1452
Sliding-Mode-Control-Based Semi-Active Vibration Control with Energy-Recycling Approach Peer-reviewed

Kanjuro Makihara, Junjiro Onoda

Transactions of the Japan Society for Aeronautical and Space Sciences　53　(619)　343-350　2005/08
Publisher: THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES
DOI： 10.2322/jjsass.53.343 　

ISSN： 1344-6460

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A novel control law based on the sliding-mode control is proposed for energy-recycling vibration suppression of a structure with piezoelectric transducers. The performance of vibration suppression with the proposed control law is investigated and compared with that of the previously proposed control law based on LQR control theory. Numerical simulations of vibration suppression with a 10-bay truss structure show that the proposed control law is effective in suppressing vibration. Through experiments of vibration suppression with a truss structure, the proposed control law is shown to suppress single-mode and multiple-mode vibrations of actual structure. Although the proposed control law is derived in a different way from the previous control law, the two methods are found to have similar coefficients of modal velocities in the control index.
Low-energy-consumption hybrid vibration suppression based on an energy-recycling approach Peer-reviewed

K Makihara, J Onoda, K Minesugi

AIAA JOURNAL　43　(8)　1706-1715　2005/08

DOI： 10.2514/1.14223 　

ISSN： 0001-1452
Stability analysis of open-loop stiffness control to suppress self-excited vibrations Peer-reviewed

K Makihara, H Ecker, F Dohnal

JOURNAL OF VIBRATION AND CONTROL　11　(5)　643-669　2005/05

DOI： 10.1177/1077546305052314 　

ISSN： 1077-5463
Semi-active vibration suppression of beam structures based on energy-recycling method Peer-reviewed

Kanjuro Makihara, Junjiro Onoda, Masahiro Tsuchihashi

Transactions of the Japan Society for Aeronautical and Space Sciences　47　(157)　167-174　2004/11

DOI： 10.2322/tjsass.47.167 　

ISSN： 0549-3811
Energy-recycling semi-active method for vibration suppression with piezoelectric transducers Peer-reviewed

J Onoda, K Makihara, K Minesugi

AIAA JOURNAL　41　(4)　711-719　2003/04

DOI： 10.2514/2.2002 　

ISSN： 0001-1452

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Misc. 2

Editorial for Special Issue: Recent Advances in Space Debris International-journal International-coauthorship Invited Peer-reviewed

Lorenzo Olivieri, Kanjuro Makihara, Leonardo Barilaro

Applied Sciences　14　(3)　954-954　2024/01/23
Publisher: MDPI AG
DOI： 10.3390/app14030954 　

eISSN： 2076-3417

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The near-Earth space debris environment represents an existing hazard for human activities in space [...]
Self-Powered Vibration Suppression for Space Structures Invited Peer-reviewed

Kanjuro MAKIHARA

Aeronautical and Space Sciences Japan　68　(7)　205-209　2020/07/05

Books and Other Publications 3

Recent Advances in Space Debris

Lorenzo Olivieri, Kanjuro Makihara, Leonardo Barilaro

MDPI Books　2024/03

ISBN: 9783725804368
アクチュエータの新材料，駆動制御，最新応用技術

2017/03

ISBN: 9784861046490
エネルギーハーベスティングの設計と応用展開

株式会社シーエムシー出版　2015/10

ISBN: 9784781310923

Presentations 274

居住型インフレータブル構造物におけるスペースデブリ衝突による宇宙環境への影響評価指標

森本大介, 高橋輝, 杉山喜洋, 菊次祐紀, 原勇心, 槙原幹十朗

令和5年度宇宙科学に関する室内実験シンポジウム　2024/03/19
バフェッティングによる振動エネルギハーベスティング

志村賢人, 向川大成, 原勇心, 大塚啓介, 槙原幹十朗

日本機械学会東北部第59期総会・講演会　2024/03/15
不確実さを考慮した圧電振動構造物のモデリング

李星志, 三島光翼, 唐天乙, 周蒙, 原勇心, 槙原幹十朗, 槙原幹十朗

日本機械学会東北支部第59期総会講演会　2024/03/15
3次元トラス構造の単一モード振動制御におけるセンサ・アクチュエータ配置の影響

百田旬甫, 亀山正樹, 原勇心, 槙原幹十朗

日本機械学会北陸信越支部2024年合同講演会　2024/03/08
Moving Morphable Components based on Strain-Based Beam Formulation for Topology Optimization International-presentation International-coauthorship

Otsuka, K, Dong, S, Kuzuno, R, Sugiyama, H, Makihara, K

Proceedings of AIAA Scitech 2024 Forum　2024/01/08
運用中の宇宙構造物の動的特性取得を想定した圧電準能動制御

原勇心, 唐天乙, 槙原幹十朗

第38回宇宙構造・材料シンポジウム　2023/12/18
Aeroelastic Simulation Framework for Membrane Wings

Otsuka, K, Dong, S, Fujita, K, Nagai, H, Makihara, K

Proceedings of the 23nd International Symposium on Advanced Fluid Information　2023/11/08
Evaluation of Shape-Keeping Performance for Tether Cross-Shaped Keepers by Hypervelocity Impact

Morimoto, D, Takahashi, H, Sugiyama, Y, Ohtani, K, Makihara, K

Proceedings of the 23nd International Symposium on Advanced Fluid Information　2023/11/07
Arbitrary Lagrangian-Eulerian Non-liner Finite Element Analysis of Tethered Structure with Large Deformation

Takahashi, Y, Kuzuno, R, Dong, S, Okada, T, Shizuno, Y, Otsuka, K, Makihara, K

Proceedings of the 20th International Conference on Flow Dynamics　2023/11/06
Effective Semi-Active Energy Harvesting from Structural Vibration Using Magnetostrictive Transducer

Kobayashi, Y, Li, A, Otsuka, K, Makihara, K

Proceedings of the 20th International Conference on Flow Dynamics　2023/11/06
Structural Optimization of Flexible Multibody Systems with Deployment Mechanism

Watanabe, S, Dong, S, Otsuka, K, Makihara, K

Proceedings of the 20th International Conference on Flow Dynamics　2023/11/06
State Estimation of Multibody Model Using State Observer Based on Differential Algebraic Equation

Okada, T, Dong, S, Kuzuno, R, Takahashi, Y, Shizuno, Y, Otsuka, K, Makihara, K

Proceedings of the 20th International Conference on Flow Dynamics　2023/11/06
Flutter Harvester Using Flexible Plates with Piezoelectric Film

Mukogawa, T, Dong, S, Jia, Y, Shi, Y, Soutis, C, Kurita, H, Narita, F, Otsuka, K, Makihara, K

Proceedings of the 20th International Conference on Flow Dynamics　2023/11/06
Energy Harvesting Using Magnetostrictive Materials: Effects of Material Anisotropy and Stress Multiaxiality

Ducharne, B, Liu, Y, Daniel, L, Sebald, G, Lallart, M, Makihara, K

Proceedings of 7th International Conference on Advanced Electromaterials (ICAE 2023)　2023/10/31
Predictive Vibration Control Using Tree Decision Algorithm with Low Energy Requirements

Makihara, K, Abe, M, Hara, Y

Proceedings of the 74th International Aeronautical Congress (IAC)　2023/10/02
High-Precision Multibody Model for Space Elevator Including Torsional Deformation

Kuzuno, R, Dong, S, Takahashi, Y, Otsuka, K, Makihara, K

Proceedings of the 74th International Aeronautical Congress (IAC)　2023/10/02
部分熱硬化型インフレータブル構造物のデブリ防護性能評価

高橋輝, 森本大介, 杉山善洋, 大塚啓介, 槙原幹十朗

日本機械学会東北⽀部第59期秋季講演会　2023/09/30
外乱の周期情報を利用した入力定式化に基づくセミアクティブ予測振動制御

三島光翼, 周蒙, 唐天乙, 李星志, 原勇心, 大塚啓介, 槙原幹十朗

日本機械学会東北⽀部第59期秋季講演会　2023/09/30
Energy Saving Structural Health Monitoring Using Semi-Active Identification

Hara, Y, Tang, T, Otsuka, K, Makihara, K

Proceedings of 4th Asia Pacific Conference of the Prognostics and Health Management Society (PHMAP 2023)　2023/09/11
準受動制御を用いた省エネルギなモードパラメータの同定

原勇心, 唐天乙, 大塚啓介, 槙原幹十朗

Dynamics and Design Conference 2023　2023/08/28
磁歪トランスデューサを用いた大型振動構造物の効率的なエネルギハーベスティングのためのスイッチング制御方法

李安, 小林佑輔, 原勇心, 大塚啓介, 槙原幹十朗

Dynamics and Design Conference 2023　2023/08/23
ハミルトニアン形式の柔軟マルチボディダイナミクスの低次元化モデリングと実験実証

DONG Shuonan, 大塚啓介, 槙原幹十朗

第65回構造強度に関する講演会　2023/08/08
幾何学的制約を導入可能なMMC法によるトポロジー最適化

大塚啓介, Dong Shuonan, 槙原幹十朗

第65回構造強度に関する講演会　2023/08/08
決定木アルゴリズムに基づく予測セミアクティブ振動制御

槙原幹十朗, 阿部瑞樹, 原勇心, 三島光翼

第65回構造強度に関する講演会　2023/08/08
System Identification of Space Structures Subjected to Unknown Disturbances Using Piezoelectric Device

Tang, T, Hara, Y, Zhou, M, Abe, M, Otsuka, K, Makihara, K

Proceedings of the 34th International Symposium on Space Technology and Science　2023/06/03
Dominant Geometrical Factor in Non-Equatorial Space Elevator Dynamics

Kuzuno, R, Dong, S, Takahashi, Y, Okada, T, Shizuno, Y, Otsuka, K, Makihara, K

Proceedings of the 34th International Symposium on Space Technology and Science　2023/06/03
Phase-Delay Switching Strategy for Piezoelectric Vibration Energy Harvesting

Zhou, M, Hara, Y, Tang, T, Jia, Y, Shi, Y, Soutis, C, Kurita, H, Narita, F, Otsuka, K, Makihara, K

Proceedings of the 34th International Symposium on Space Technology and Science　2023/06/03
Piezoelectric Semi-Active Structural Identification Method to Realize Energy-Saving On-Orbit Identificatio

Hara, Y, Tang, T, Otsuka, K, Makihara, K

Proceedings of the 34th International Symposium on Space Technology and Science　2023/06/03
非線形有限要素法によるテザー構造物の大変形解析

高橋侑也, 葛野諒, DONG Shuonan, 岡田大規, 静野芳崇, 大塚啓介, 槙原幹十朗

日本機械学会東北支部第58期総会講演会　2023/03/17
磁歪トランスデューサを用いた実用的なセミアクティブ振動発電手法の研究

小林佑輔, 後藤慧樹, 李安, 原勇心, 大塚啓介, 槙原幹十朗

日本機械学会東北支部第58期総会講演会　2023/03/17
大変形する展開構造物の構造最適化

渡辺聡史, DONG Shuonan, 大塚啓介, 槙原幹十朗

日本機械学会東北支部第58期総会講演会　2023/03/17
Structural Modal Parameter Identification Incorporating with Semi-Active Piezoelectric Control International-presentation

Hara, Y, Asanuma, H, Otsuka, K, Makihara, K

SPIE Conference, Smart Structures + Nondestructive Evaluation　2023/03/15
十字型形状保持具を付加した中空円筒テザーのスペースデブリ衝突実験

柄澤菜々美, 森本大介, 高橋輝, 杉山喜洋, 大塚啓介, 槙原幹十朗

令和4年度宇宙科学に関する室内実験シンポジウム　2023/03/07
Analysis-Oriented Moving Morphable Components for Topology Optimization International-presentation

Otsuka, K, Dong, S, Kuzuno, R, Makihara, K

AIAA Scitech 2023 Forum　2023/01/23
Geometrically Nonlinear Beam Model for Slender Multibody Wings

Otsuka, K, Wang, Y, Cheng, K, Dong, S, Fujita, K, Palacios, R, Nagai, H, Makihara, K

Proceedings of the 22nd International Symposium on Advanced Fluid Information　2022/11/09
Damage Evaluation for Hollow Cylindrical Tethers with Cross-Shaped Keepers

Karasawa, N, Morimoto, D, Takahashi, H, Ohtani, K, Otsuka, K, Makihara, K

Proceedings of the 22nd International Symposium on Advanced Fluid Information　2022/11/09
Structural Parameter Estimation for Health Monitoring and Damage Detection based on Subspace Identification

Tang, T, Abe, M, Zhou, M, Hara, Y, Otsuka, K, Makihara, K

Proceedings of the 19th International Conference on Flow Dynamics　2022/11/09
Investigation of Flutter Velocity and Power Generation with Piezoelectric Film

Dong, S, Mukogawa, T, Hara, Y, Otsuka, K, Chen, B, Shi, Y, Jia, Y, Soutis, C, Kurita, H, Narita, F, Makihara, K

Proceedings of the 19th International Conference on Flow Dynamics　2022/11/09
Semi-Active Energy Harvesting with Magnetostrictive Transducer from Structural Vibration

Goto, K, Li, A, Hara, Y, Otsuka, K, Kurita, H, Narita, F, Lohmuller, P, Laheurte, P, Makihara, K

Proceedings of the 19th International Conference on Flow Dynamics　2022/11/09
非慣性座標系へ拡張した非線形有限要素法による非赤道上宇宙エレベータの３次元動解析

葛野諒, 董鑠男, 高橋侑也, 岡田大規, 静野芳崇, 大塚啓介, 槙原幹十朗

第66回宇宙科学技術連合講演会　2022/11/01
積層造形によるFe-Co合金の構造設計と振動・衝撃発電性能

栗田大樹, 中島賢也, 大塚啓介, 槙原幹十朗, 成田史生

第31回傾斜機能材料国内シンポジウムFGMs2022　2022/10/27
Experimental Investigations: Dynamic Analysis of 150-Member Spherical Tensegrity to Identify its Characteristics for Space Applications

Makihara, K, Goto, T, Kawabata, N, Otsuka, K

Proceedings of the 73rd International Aeronautical Congress (IAC)　2022/10/22
Flexible Rotating Multibody Analysis Using Extended NPFEM for Non-Equatorial Space Elevator

Kuzuno, R, Dong, S, Takahashi, Y, Okada, T, Shizuno, Y, Otsuka, K, Makihara, M

Proceedings of the 6th Joint International Conference on Multibody System Dynamics and the 10th Asian Conference on Multibody Dynamics　2022/10/17
テンセグリティ構造における力密度法の適用及び加振実験による力学的特性の解析

後藤卓馬, 川畑成之, 大塚啓介, 槙原幹十朗

日本機械学会東北支部第58期秋季講演会　2022/10/08
平板翼のフラッタ解析と圧電素子を用いたフラッタ発電実験

向川大成, DONG Shuonan, 大塚啓介, 槙原幹十朗

日本機械学会東北支部第58期秋季講演会　2022/10/08
特徴点同士の位置関係に着目した機械学習によるデブリクラウド輪郭検出法

森本大介, 柄澤菜々美, 高橋輝, 大塚啓介, 槙原幹十朗

日本機械学会東北支部第58期秋季講演会　2022/10/08
インフラ構造物の振動エネルギを用いた磁歪スイッチング制御エネルギハーベスティングの研究

李安, 後藤慧樹, 原勇心, 大塚啓介, 槙原幹十朗

日本機械学会2022年度年次大会　2022/09/13
モデル縮約したハミルトニアン形式の柔軟マルチボディシステム解析

DONG Shuonan, 葛野諒, 岡田大規, 静野芳崇, 大塚啓介, 槙原幹十朗

日本機械学会2022年度年次大会　2022/09/12
予測木に基づくモデル予測・最適化アルゴリズムによるセミアクティブ振動制御

阿部瑞樹, TANG Tianyi, ZHOU Meng, 原勇心, 大塚啓介, 槙原幹十朗

日本機械学会2022年度年次大会　2022/09/12
プロペラと主翼の空力干渉を考慮した高アスペクト比翼の非線形空力弾性解析

大塚啓介, Dong Shuonan, 槙原幹十朗

第64回構造強度に関する講演会　2022/08/05
将来入力軌道を用いた包括的モデル予測制御に基づく制振手法

槙原幹十朗, 阿部瑞樹, 原勇心

第64回構造強度に関する講演会　2022/08/03
宇宙構造物のための省エネルギなセミアクティブ構造同定

原勇心, 唐天乙, 周蒙, 大塚啓介, 槙原幹十朗

第64回構造強度に関する講演会　2022/08/03
Energy Harvesting Using Magnetostrictive Material Based on Active Control International-presentation

Li, A, Watanabe, T, Hara, Y, Makihara, K

Proceedings of the 33rd International Symposium on Space Technology and Science　2022/03/04
Development of Multibody Dynamics Formulation Based on Canonical Theory

Dong, S, Otsuka, K, Wang, Y, Fujita, K, Nagai, H, Makihara, K

Proceedings of the 33rd International Symposium on Space Technology and Science　2022/03/01
形状保持具を付加した中空円筒テザーへの超高速衝突実験

小林稜平, 鈴木麻友美, 柄澤菜々美, 森本大介, 高橋輝, 大塚啓介, 槙原幹十朗

令和3年度宇宙科学に関する室内実験シンポジウム　2022/02/28
Strain-Based Geometrically Nonlinear Beam Formulation for Multibody Dynamic Analysis International-presentation International-coauthorship

Otsuka, K, Wang, Y, Palacios, R, Makihara, K

Proceedings of AIAA Scitech 2022 Forum　2022/01/04
A Multifunctional composites for energy harvesting based on piezoelectric microgenerator International-presentation International-coauthorship

Chen, B, Jia, Y, Tang, X, Narita, F, Makihara, K, Shi, Y

Proceedings of the 20th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications　2021/12/07
Model Predictive Control for Switching Vibration Suppression Using Future Trajectory

Makihara, K, Abe, M, Hara, Y, Otsuka, K

Proceedings of the 72nd International Aeronautical Congress (IAC)　2021/10/29
Battery-Less Soft Sensor of Spacecraft Vibration with Advanced Piezoelectric Energy Harvester

Hara, Y, Li., A, Zhou, M, Otsuka, K, Makihara, K

Proceedings of the 72nd International Aeronautical Congress (IAC)　2021/10/29
Nonlinear Aeroelastic Analysis Coupling Unsteady Vortex Lattice Method and Strain-Based Beam Formulation

Otsuka, K, Dong, S, Wang, Y, Fujita, K, Nagai, H, Makihara, K

Proceedings of the 18th International Conference on Flow Dynamics　2021/10/29
Shape Keepers of Hollow Cylindrical Tethers for Space Debris Removal

Suzuki, M, Kobayashi, R, Karasawa, N, Morimoto, D, Ohtani, K, Otsuka, K, Makihara, K

Proceedings of the 21st International Symposium on Advanced Fluid Information　2021/10/27
Penetration Evaluation of Inflatable Space Structure with Heat Curing at Hypervelocity Impact

Kobayashi, R, Suzuki, M, Karasawa, N, Morimoto, D, Otsuka, K, Makihara, K

Proceedings of the 18th International Conference on Flow Dynamics　2021/10/27
Iterative Modeling and Dynamic Analysis of Spherical Tensegrity

Mori, E, Goto, T, Kawabata, N, Otsuka, K, Makihara, K

Proceedings of the 18th International Conference on Flow Dynamics　2021/10/27
New MMC-Based Topology Optimization Method with Curvilinear Representation

Hirotani, S, Dong, S, Kuzuno, R, Okada, T, Otsuka, K, Makihara, K

Proceedings of the 18th International Conference on Flow Dynamics　2021/10/27
Experimental Investigation of Flutter Power Generation with Piezoelectric Film

Imagawa, K, Otsuka, K, Jia, Y, Shi, Y, Soutis, C, Kurita, H, Narita, F, Makihara, K

Proceedings of the 18th International Conference on Flow Dynamics　2021/10/27
Enhancing Piezoelectric Harvested Energy of an Advanced Switching Interface by Tunable Switching Intervals

Zhou, M, Hara, Y, Jia, Y, Shi, Y, Soutis, C, Kurita, H, Narita, F, Otsuka, K, Makihara, K

Proceedings of the 18th International Conference on Flow Dynamics　2021/10/27
Optimization of Electromechanical Dynamic Vibration Absorber for Flexible Space Structure

Watanabe, T, Li, A, Goto, K, Hara, Y, Otsuka, K, Makihara, K

Proceedings of the 18th International Conference on Flow Dynamics　2021/10/27
テザー破断に着目したスペースデブリ衝突のリスク評価

柄澤菜々美, 小林稜平, 鈴木麻友美, 森本大介, 大塚啓介, 槙原幹十朗

東北支部第57期秋季講演会　2021/10/02
非赤道上宇宙エレベータにおけるテザーの３次元非線形解析

葛野諒, 董鑠男, 廣谷俊介, 大塚啓介, 槙原幹十朗

東北支部第57期秋季講演会　2021/10/02
歪を要素変数とする非線形梁要素の柔軟マルチボディ解析への拡張

大塚啓介, Dong Shuonan, 槙原幹十朗

第63回構造強度に関する講演会　2021/08/08
Absolute Nodal Coordinate Formulations for Aeroelastic Analysis of Next-Generation Aircraft Wings

Otsuka, K, Dong, S, Makihara, K

Proceedings of International Design Engineering Technical Conferences & Computers and Information in Engineering Conference (IDETC/CIE) 2021　2021/08/07
ファジィ適応制御を用いた間欠スイッチングハーベスタ

原勇心, 周蒙, 大塚啓介, 槙原幹十朗

第63回構造強度に関する講演会　2021/08/04
Magnetic Characterization of Metglas under Tensile Stress for Energy Harvesting Applications

Liu, Y, Ducharne, B, Makihara, K, Sebald, G, Lallart, M

Proceedings of ELyT & LyonSE&N Workshop 2021　2021/06/21
Energy Harvesting Using Magnetostrictive Material Based on Vibration Control

Li., A, Watanabe, T, Hara, Y, Otsuka, K, Makihara, K

Proceedings of the 7th Asian Conference on Mechanics of Functional Materials and Structures (ACMFMS2020+1)　2021/03/21
熱硬化型居住用インフレータブル構造物の超高速衝突時における損傷評価

小林稜平, 富﨑帆乃花, 鈴木麻友美, 柄澤菜々美, 大塚啓介, 槙原幹十朗

日本航空宇宙学会北部支部2021年講演会ならびに第２回再使用型宇宙輸送系シンポジウム　2021/03/19
SICE回路を用いた振動エネルギハーベスティングのロバストな制御則の提案

周蒙,原勇心, 高本育弥, 大塚啓介, 槙原幹十朗

日本機械学会東北支部第56期総会講演会　2021/03/12
スペースデブリ除去用中空円筒テザーの形状保持に関する研究

鈴木麻友美, 富﨑帆乃花, 小林稜平, 柄澤菜々美, 大塚啓介, 槙原幹十朗

日本機械学会東北支部第56期総会講演会　2021/03/12
磁歪素子を用いた動吸振器による柔軟宇宙構造物の振動制御

渡辺大志, 李安, 原勇心, 大塚啓介, 槙原幹十朗

日本機械学会東北支部第56期総会講演会　2021/03/12
大変形を伴う板振動に関する研究

今川慶, 大塚啓介, 槙原幹十朗

日本機械学会東北支部第56期総会講演会　2021/03/12
変形した導電性テープテザーとスペースデブリ衝突による損傷評価

富﨑帆乃花, 小林稜平, 鈴木麻友美, 柄澤菜々美, 森本大介, 大塚啓介, 槙原幹十朗

令和2年度宇宙科学に関する室内実験シンポジウム　2021/03/05
Multibody Modeling Using Absolute Nodal Coordinate Plate Element for Deployable Aerospace Structures

Otsuka, K, Dong, S, Hirotani, S, Kuzuno, R, Makihara, K

Proceedings of the 15th International Conference on Motion and Vibration Control　2020/12/08
Flexible Multibody Dynamics Using Absolute Nodal Coordinate Formulation with Internal Constraint Equation

Otsuka, K, Dong, S, Hirotani, S, Kuzuno, R, Makihara, K

Proceedings of the 15th International Conference on Motion and Vibration Control　2020/12/08
Vibration Suppression Integrating Semi-Active Control and Model Predictive Control Based on Harmonic Input

Takamoto, I, Abe, M, Hara, Y, Nakahara, T, Makihara, K

Proceedings of the 15th International Conference on Motion and Vibration Control　2020/12/08
Intellectual Power Generation by Stand-Alone Active Harvester with Digital Control Unit

Hara, Y, Mori, E, An, L, Makihara, K

Proceedings of the 15th International Conference on Motion and Vibration Control　2020/12/08
Robustness Evaluation of Structural Vibration Estimation by Self-Sensing Harvester

Hara, Y, Saito, K, Takamoto, I, An, L, Makihara, K

Proceedings of the 15th International Conference on Motion and Vibration Control　2020/12/08
Semi-Active Vibration Control using Magnetostrictive Transducer

Li, A, Hara, Y, Makihara, K

Proceedings of the 17th International Conference on Flow Dynamics　2020/10/29
Multibody Dynamic Analysis Based on Canonical Theory

Dong, S, Otsuka, K, Makihara, K

Proceedings of the 17th International Conference on Flow Dynamics　2020/10/29
Flexible Wing Fluid-Structure Interaction Model Coupling Unsteady Vortex Lattice Method and Absolute Nodal Coordinate Formulation

Otsuka, K, Dong, S, Wang, Y, Fujita, K, Nagai, H, Makihara, K

Proceedings of the 20th International Symposium on Advanced Fluid Information　2020/10/29
Damage Assessment for Twisted Tape Tether on Space Debris

Tomizaki, H, Kobayashi, R, Suzuki, M, Karasawa, N, Ohtani, K, Makihara, K

Proceedings of the 20th International Symposium on Advanced Fluid Information　2020/10/29
回転対称性を利用した球状テンセグリティのモデリング手法の確立

森瑛梨奈, 原勇心, 大塚啓介, 槙原幹十朗

東北支部第56期秋季講演会　2020/09/26
弾性力を簡易化したANCF/CRBF梁モデルの運動解析

廣谷俊輔, 董鑠男, 大塚啓介, 槙原幹十朗

東北支部第56期秋季講演会　2020/09/26
絶対節点座標法を用いた柔軟翼の非線形構造解析

大塚啓介, Dong Shuonan, 槙原幹十朗

第62回構造強度に関する講演会　2020/08/05
スペースデブリ衝突における膜面展開構造物の評価指標

富崎帆乃花, 藤原路大, 槙原幹十朗

日本機械学会東北支部第54期総会講演会　2020/03/13
柔軟宇宙構造物における磁歪トランスデューサを用いた準能動制御に関する研究

李安, 十河直也, 槙原幹十朗

日本機械学会東北支部第54期総会講演会　2020/03/13
正準理論に基づく柔軟マルチボディシステムについての研究

董鑠男, 大塚啓介, 廣谷俊輔, 須崎貴大, 槙原幹十朗

日本機械学会東北支部第54期総会講演会　2020/03/13
予測制御理論に基づく効果的な準能動制振

髙本育弥, 阿部瑞樹, 中原健志, 槙原幹十朗

日本機械学会東北支部第54期総会講演会　2020/03/13
Deployable Wing Model Using ANCF and UVLM: Multibody Dynamic Simulation and Wind Tunnel Experiment International-presentation

Keisuke Otsuka, Yinan Wang, Koji Fujita, Hiroki Nagai, Kanjuro Makihara

Proceedings of AIAA Scitech 2020 Forum　2020/01/06
3Dプリンティング翼の空力弾性特性

津島夏輝, 玉山雅人, 槙原幹十朗, 有薗仁

第28回交通・物流部門大会　2019/11/27
鳥の羽を模した折り畳み機構を有する翼のマルチボディ解析

大塚啓介, 須崎貴大, 藤田昂志, 永井大樹, 槙原幹十朗

第57回飛行機シンポジウム　2019/11/16
圧電アクチュエータを用いたセミアクティブ振動制御のためのモデル予測制御器の制御ホライズンのブロッキングによる計算負荷低減

2019/11/10
Damage Assessment for Hollow Cylindrical Tether considering Oblique Collision International-presentation

Michihiro Fujiwara, Honoka Tomizaki, Kiyonobu Ohtani, Sunao Hasegawa, Kanjuro Makihara

Proceedings of the 19th International Symposium on Advanced Fluid Information　2019/11/07
Comparison of 2D and 3D Simulation Models for Deployable Wing International-presentation

Keisuke Otsuka, Takahiro Suzaki, Yuan Wang, Koji Fujita, Hiroki Nagai, Kanjuro Makihara

Proceedings of the 19th International Symposium on Advanced Fluid Information　2019/11/07
New Framework of Strain Based Beam Formulation for Rigid Body Motion International-presentation

Takahiro Suzaki, Keisuke Otsuka, Shunsuke Hirotani, Shuo-Nan Dong, Kanjuro Makihara

Proceedings of the 16th International Conference on Flow Dynamics　2019/11/07
System Identification of Piezoelectric Dynamic System for High-Efficiency Vibration Control International-presentation

Kensuke Saito, Yushin Hara, Kanjuro Makihara

Proceedings of the 16th International Conference on Flow Dynamics　2019/11/07
Vibration Control of Flexible Space Structures with Magnetostrictive Transducer International-presentation

Naoya Sogo, Li An, Kanjuro Makihara

Proceedings of the 16th International Conference on Flow Dynamics　2019/11/07
New Approach to Semi-Active Vibration Control Based on Disturbance Prediction International-presentation

Kanjuro Makihara, Ikuya Takamoto, Takeshi Nakahara

Proceedings of the 70th International Aeronautical Congress　2019/10/25
未知外乱を受けるセミアクティブ制御系の宇宙構造物を対象とするシステム同定

齋藤健祐, 原勇心, 槙原幹十朗

Dynamics and Design Conference 2019　2019/08/27
圧電アクチュエータを用いたセミアクティブ振動制御のための低計算負荷モデル予測制御器

中原健志, 槙原幹十朗

Dynamics and Design Conference 2019　2019/08/27
導電性テープテザーのデブリ衝突評価に関する研究

槙原幹十朗, 藤原路大, 富﨑帆乃花

第61回構造強度に関する講演会　2019/08/09
Sensor-less Energy Harvester Based on Voltage Measurement for Space Structures International-presentation

Yushin Hara, Kensuke Saito, Kanjuro Makihara

Proceedings of the 32nd International Symposium on Space Technology and Science　2019/06/20
Damage Assessment of Electric Tape Tether Against Space Debris Impacts International-presentation

Michihiro Fujiwara, Honoka Tomizaki, Kanjuro Makihara

Proceedings of the 32nd International Symposium on Space Technology and Science　2019/06/19
圧電素子を内包する振動系への部分空間システム同定手法の適用

齋藤健祐, 原勇心, 槙原幹十朗

日本機械学会東北支部第54期総会講演会　2019/03/12
Strain Based Beam Formulationの発展手法に関する研究

須崎貴大, 大塚啓介, 小貫慧, 槙原幹十朗

日本機械学会東北支部第54期総会講演会　2019/03/12
中空円筒テザーに対するスペースデブリ衝突実験

上蓑義幸, 藤原路大, 富﨑帆乃花, 槙原幹十朗

平成30年度宇宙科学に関する室内実験シンポジウム　2019/02/28
ANCF-ICE Beam Element for Modeling Highly Flexible and Deployable Aerospace Structures International-presentation

Keisuke Otsuka, Kanjuro Makihara

AIAA Scitech 2019 Forum　2019/01/07
ピエゾアクチュエータによるモーフィング翼の非線形空力弾性解析

津島夏輝, 有薗仁, 横関智弘, 槙原幹十朗

第27回交通・物流部門大会　2018/12/05
Simulation and Control of Flexible Aero-Structures using Nonlinear Reduced-Order Models International-presentation

Yinan Wang, Keisuke Otsuka, Koji Fujita, Hiroki Nagai, Kanjuro Makihara

15th International Conference on Flow Dynamics　2018/11/09
Dynamic Simulation of Deployable Wing Mars Airplane International-presentation

Keisuke Otsuka, Yinan Wang, Koji Fujita, Hiroki Nagai, Kanjuro Makihara

18th International Symposium on Advanced Fluid Information　2018/11/08
Concept of Hollow Cylindrical Tether under Space Debris Impact International-presentation

Yoshiyuki Uwamino, Michihiro Fujiwara, Kiyonobu Ohtani, Kanjuro Makihara

18th International Symposium on Advanced Fluid Information　2018/11/08
Switch Control with Adaptive Threshold for Effective Vibration Energy Harvesting International-presentation

Yushin Hara, Kensuke Saito, Kanjuro Makihara

15th International Conference on Flow Dynamics,　2018/11/08
Semi-Active Vibration Suppression Using Predictive Theory International-presentation

Masumi Ueno, Ikuya Takemoto, Keisuke Otsuka, Kanjuro Makihara

15th International Conference on Flow Dynamics　2018/11/08
Motion Analysis of Flexible Folding Wing with a Hinge Joint Loaded by Gust International-presentation

Satoru Onuki, Keisuke Otsuka, Takahiro Suzaki, Hiroki Nagai, Koji Fujita, Kanjuro Makihara

15th International Conference on Flow Dynamics　2018/11/08
スペーデブリ衝突実験におけるカメラ画像の解析に関する研究

藤原路大, 上蓑義幸, 富﨑帆乃花, 槙原幹十朗

東北支部第54期秋季講演会　2018/09/07
歪量を要素変数とする３次元柔軟梁要素の研究

須崎貴大, 大塚啓介, 小貫慧, 槙原幹十朗

東北支部第54期秋季講演会　2018/09/07
ファジィ制御を用いた高効率圧電振動発電のための適応スイッチ制御則

原勇心, 齋藤健祐, 槙原幹十朗

Dynamics and Design Conference 2018　2018/08/29
展開型モーフィング翼の柔軟マルチボディシミュレーション

大塚啓介, 槙原幹十朗

Dynamics and Design Conference 2018　2018/08/28
ベイジアンモデル概念に基づくスペースデブリ雲の画像抽出法

2018/08/02
全体座標表現に基づく柔軟展開翼の３次元マルチボディ解析法の開発

大塚啓介, 槙原幹十朗

第60回構造強度に関する講演会　2018/08/01
Evaluation of Piezoelectric Vibration Energy Harvester Driven by Self-Powered Digital Controller

2018/03/14
Damage Evaluation of Twisted Electrodynamic Tethers Impacted by Space Debris

2018/03/06
Predictive Semi-Active Vibration Control for Multiple DOF Space Structure

2018/03/06
Motion Analysis of Flexible Folding Wing with a Hinge Joint Loaded by Gusts

2018/03/06
Multibody Analysis of Morphing Wing Considering Aeroelastic Deformation

2018/03/06
Development of the Impact-stimuli Responsive Film Compounds for Evaluations of Materials

2018/02/26
Deployment Simulation Model based on ANCF Plate Element for Next-Generation Aerospace Structures. International-presentation

Otsuka, K, Makihara, K

AIAA Scitech 2018 Forum　2018/01/11
ディジタル波形処理を用いたセルフセンシング振動発電

原勇心, 山本雄大, 槙原幹十朗

第60回自動制御連合講演会　2017/11/11
Development of the Impact-stimuli Responsive Film Compounds for Evaluations of Materials

上野真澄, 朝比奈慧, 大塚啓介, 槙原幹十朗

第60回自動制御連合講演会　2017/11/11
Deployable Wing Simulation Using Flexible Multibody Dynamics International-presentation

Otsuka, K, Makihara, K, Nagai, H

17th International Symposium on Advanced Fluid Information　2017/11/02
Identification of Air-Leakage Region by Space-Debris Impact Utilizing Photoluminescent Substance International-presentation

Sasahara, K, Uwamino, Y, Hasegawa, M, Ohtani, K, Makihara, K

17th International Symposium on Advanced Fluid Information　2017/11/01
Semi-Active Vibration Control of Truss Structure with Magnetostrictive Transducer International-presentation

Miyazawa, H, Sogo. N, Makihara, K

14th International Conference on Flow Dynamics　2017/11/01
Evaluation of Predictive Semi-Active Vibration Suppression Method International-presentation

Asahina, K, Ueno, M, Makihara, K

14th International Conference on Flow Dynamics　2017/11/01
差動計測法を用いたセルフセンシングSSHIエネルギハーベスティング

原勇心, 山本雄大, 齋藤健祐, 槙原幹十朗

東北支部第53期秋季講演会　2017/09/30
予測制御理論を用いたセミアクティブ振動

上野真澄, 朝比奈慧, 大塚啓介, 槙原幹十朗

東北支部第53期秋季講演会　2017/09/30
低次元化マルチボディ構造モを用いた展開翼の空力弾性解析

大塚啓介, 槙原幹十朗

Dynamics and Design Conference 2017　2017/08/31
磁歪素子のジュール＝ビラリ効果を活用した準能動的制振

槙原幹十朗, 宮澤裕晃, 十河直也

第59回構造強度に関する講演会　2017/08/05
展開挙動シミュレーションと空力弾性解析のための展開翼モデル

大塚啓介, 槙原幹十朗

第59回構造強度に関する講演会　2017/08/04
多モード構造振動を対象とした自律制御デバイスによるアクティブ振動発電

山本雄大, 槙原幹十朗

第59回構造強度に関する講演会　2017/08/03
Determination of Fracture Toughness of Hollow Cylindrical Tether at Space Debris Impact International-presentation

Sasahara, K, Kondo, S, Uwamino, Y, Hasegawa, S, Makihara, K

31st International Symposium on Space Technology and Science　2017/06/05
Performance Evaluation of Predictive Vibration Suppression using Piezoelectric Transducer International-presentation

Asahina, K, Ueno, M, Makihara, K

31st International Symposium on Space Technology and Science　2017/06/05
Sensor-Less Control for Switch-Regulated Energy Harvester using Alternate State-Estimators International-presentation

Yamamoto, Y, Hara, Y, Makihara, K

31st International Symposium on Space Technology and Science　2017/06/05
円筒テザーのスペースデブリの衝突による損傷評価

笹原一将, 近藤周, 上蓑義幸, 長谷川直, 槙原幹十朗

日本航空宇宙学会北部支部創立30周年記念2017年講演会　2017/03/16
インテリジェント材料を用いた宇宙構造物の振動制御

宮澤裕晃, 藤田吉志, 槙原幹十朗

日本航空宇宙学会北部支部創立30周年記念2017年講演会　2017/03/16
強い衝撃を受けた材料評価にむけた発光塗料の開発

長谷川美貴, 尾形周平, 近藤一希, 川口拓馬, 石井あゆみ, 槙原幹十朗, 近藤周, 笹原一将

平成28年度宇宙科学に関する室内実験シンポジウム　2017/02/27
Frequency-Domain Flutter Analysis of Folding Wing based on Flexible Multibody Dynamics International-presentation

Otsuka, K, Makihara, K

2016 Asia-Pacific International Symposium on Aerospace Technology　2016/10/25
東北大学のデブリ研究の取り組み～除去テザーの構造, 衝突による発光色変調～ Invited

槙原幹十朗

第7回スペースデブリワークショップ　2016/10/20
Innovative Control for Enhancing Harvested Energy International-presentation

Makihara, K

2nd NUAA-Tohoku University Joint Symposium on Fluid Science, Aerospace Engineering and Smart Structure Technology　2016/10/11
Magnetostrictive Vibration Energy Harvester with Control Circuit International-presentation

Fujita, Y, Makihara, K

13th International Conference on Flow Dynamics　2016/10/10
Deployment Simulation of Morphing Wing International-presentation

Otsuka, K, Miyazawa, H, Makihara, K

13th International Conference on Flow Dynamics　2016/10/10
Experiment to Detect Air-Leakage in Space-Debris Impact using Photoluminescent Substance International-presentation

Kondo, S, Sasahara, K, Ohtani, K, Hasegawa, S, Hasegawa, M, Makihara, K

16th International Symposium on Advanced Fluid Information　2016/10/10
Sensorless Method for Switching Energy Harvester Based on Self-Sensing Approach International-presentation

Yamamoto, Y, Asahina, K, Yoshimizu, K, Makihara, K

ASME 2016 Conference on Smart Materials, Adaptive Structures and Intelligent Systems　2016/09/28
デブリ除去ミッション成功確率向上のための導電性テープテザーの設計

近藤周, 笹原一将, 槙原幹十朗

第60回宇宙科学技術連合講演会　2016/09/09
制御回路を用いた磁歪式振動発電

藤田吉志, 槙原幹十朗

Dynamics and Design Conference 2016　2016/08/23
振動状態推定に基づく自立制御ハーベスタのセンサレ化

山本雄大, 吉水謙司, 槙原幹十朗

Dynamics and Design Conference 2016　2016/08/23
スペースデブリ除去システムの設計における中空円筒メッシュテザーの提案

槙原幹十朗, 近藤周, 松本紀彦

第58回構造強度に関する講演会　2016/08/05
Flutter Analysis of Deployable Wing Using Flexible Multibody Dynamics International-presentation

Otsuka, K, Makihara, K

1st International Symposium on Flutter and its Application　2016/05/15
Piezoelectric Energy Harvesting From Aeroelastic Vibration With Composite Plate Wings International-presentation

Kameyama, M, Makihara, K

1st International Symposium on Flutter and its Application　2016/05/15
代数的な厳密解の導出による電気的受動制振機構の最適設計

藤田吉志, 水谷朋, 槙原幹十朗

日本機械学会東北支部第51期総会講演会　2016/03/11
スペースデブリ衝突におけるメッシュテザーの構造形態の影響に関する研究

近藤周, 槙原幹十朗

日本機械学会東北支部第51期総会講演会　2016/03/11
非定常空気力を受けるモーフィング翼のMBDシミュレーション

大塚啓介, 槙原幹十朗

日本機械学会東北支部第51期総会講演会　2016/03/11
テープテザーの生存確率評価のためのデブリ衝突損傷モデルの構築

近藤周, 沖義弘, 長谷川美貴, 石井あゆみ, 土屋佑斗, 近藤一希, 槙原幹十朗

平成27年度宇宙科学に関する室内実験シンポジウム　2016/02/23
Position Indication of Air-Leakage caused by Space-Debris Impact using Photoluminescent Substance International-presentation

Oki, Y, Kondo, S, Ohtani, K, Hasegawa, S, Hasegawa, M, Makihara, K

15th International Symposium on Advanced Fluid Information　2015/10/28
Evaluation of Flight Characteristics of Flexible Multibody System with Mass Loss International-presentation

Kikkawa, T, Makihara, K

12th International Conference on Flow Dynamics　2015/10/28
An Advanced Control Strategy for Switching-Type Vibrational Energy Harvesting International-presentation

Yoshimizu, K, Yamamoto, Y, Makihara, K

12th International Conference on Flow Dynamics　2015/10/28
Aeroelastic Simulation using Absolute Nodal Coordinate Formulation International-presentation

Otsuka, K, Makihara, K

12th International Conference on Flow Dynamics　2015/10/28
Harvesting Strategy to Increase Electrical Energy for Active Harvesting International-presentation

Yoshimizu, K, Yamamoto, Y, Makihara, K

26th International Conference on Adaptive Structures and Technologies　2015/10/16
Fabrication of Commercial Prototype of Active Harvester International-presentation

Makihara, K, Yamamoto, Y

26th International Conference on Adaptive Structures and Technologies　2015/10/16
Enhancement of Digital Self-Powered Energy-Harvesting for 2DOF Mixed-Mode Vibrations International-presentation

Yamamoto, Y, Makihara, K, Yoshimizu, K

ASME 2015 Conference on Smart Materials, Adaptive Structures and Intelligent Systems (SMASIS)　2015/09/20
質量変化を伴う柔軟多体システムのMBD解析

吉川尭志, 槙原幹十朗

Dynamics and Design Conference 2015　2015/08/25
多モード振動のための無電源制御器を用いた自律型振動エネルギハーベスティング

山本雄大, 吉水謙司, 槙原幹十朗

Dynamics and Design Conference 2015　2015/08/25
圧電エネルギハーベスティングにおける蓄電増幅手法の研究

吉水謙司, 山本雄大, 槙原幹十朗

Dynamics and Design Conference 2015　2015/08/25
自立駆動システムのためのエネルギハーベスティングの高性能化

槙原幹十朗, 山本雄大

第57回構造強度に関する講演会　2015/08/05
Damage Estimation of Pressure Wall from Kinetic Energy of Debris Cloud at Oblique Impacts International-presentation

30th International Symposium on Space Technology and Science　2015/07/04
Aeroelastic Simulation for Deployable Wing Using Flexible Multibody Dynamics International-presentation

30th International Symposium on Space Technology and Science　2015/07/04
Transient Analysis of Self-Powered Energy-Harvesting using Bond-Graph for Aerospace Applications International-presentation

Kanjuro Makihara, Shigeta Daisuke, Yoshiyuki Fuijta, Yuta Yamamoto

8th Asian-Pacific Conference on Aerospace Technology and Science　2015/05/20
圧電エネルギハーベスティングにおける蓄電増幅のためのスイッチ制御手法

吉水謙司, 山本雄大, 槙原幹十朗

日本機械学会東北支部第50期総会講演会　2015/03/13
斜め衝突時におけるデブリクラウドの運動エネルギを用いた与圧壁損傷推定

沖義弘, 根元翔, 槙原幹十朗, 長谷川直

日本機械学会東北支部第50期総会講演会　2015/03/13
質量変化と柔軟性を考慮したロケットのMBD解析

吉川尭志, 槙原幹十朗

日本機械学会東北支部第50期総会講演会　2015/03/13
確率理論を駆使した高速衝突画像のデブリクラウド形状の自動抽出

沖義弘, 槙原幹十朗

平成26年度宇宙科学に関する室内実験シンポジウム　2015/02/23
エネルギー回生式セミアクティブ振動制御法の海洋構造物への適用に関する研究

中野陽平, 竹澤晃弘, 槙原幹十朗, 北村充

平成26年日本船舶海洋工学会秋季講演会　2014/11/20
An Innovative Controller to Increase Harvested Energy International-presentation

Makihara, K, Yamamoto, Y, Horiguchi, C, Sakaguchi, H, Fujimoto, K

14th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS 2014)　2014/11/18
Elementary Experiments of Air-Leakage Detection for Space-Debris Impact using Photoluminescent Substance International-presentation

Matsumoto, N, Oki, Y, Ohtani, K, Hasegawa, S, Hasegawa, M, Makihara, K

14th International Symposium on Advanced Fluid Information　2014/10/08
Smart Energy-Harvesting from Various Vibrations with Digital Regulation Approach International-presentation

Yamamoto, Y, Yoshimizu, K, Makihara, K

11th International Conference on Flow Dynamics　2014/10/08
Model Validity of Bond-Graph Elements for Power Assessment International-presentation

Makihara, K, Shigeta, D, Yamamoto, Y

65th International Aeronautical Congress　2014/09/29
エネルギー回生式セミアクティブ振動制御装置に関するSRS制約を導入したPZT配置

中野陽平, 竹澤晃弘, 槙原幹十朗, 北村充

第24回設計工学システム部門講演会　2014/09/17
Comprehensive Assessment of Smart Energy-Harvesting from Multimodal Vibrations International-presentation

Yamamoto, Y, Makihara, K

12th International Conference on Motion and Vibration Control　2014/08/04

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査読有・国際学会
Power Evaluation of Dynamic Behavior of Advanced Energy-Harvester Using Graphical Analysis International-presentation

Shigeta, D, Yamamoto, Y, Makihara, K

12th International Conference on Motion and Vibration Control　2014/08/04

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査読有・国際学会
グラフ解析法に基づく自家発電型ハーベスタの性能解析

重田大輔, 山本雄大, 槙原幹十朗

日本航空宇宙学会北部支部2014年講演会　2014/03/10
電気的吸振機構による宇宙構造物の受動型制振の実証

水谷朋, 山本雄大, 槙原幹十朗

日本航空宇宙学会北部支部2014年講演会　2014/03/10
メッシュ構造テザーのスペースデブリ衝突に関する実験研究

松本紀彦, 沖義弘, 山口将史, 後藤直人, 土屋佑斗, 槙原幹十朗, 長谷川美貴

平成25年度プラズマ研究会　2014/02/27
スペースデブリ衝突の空気漏れ貫通穴を暗闇でも位置表示させる試み～光化学物質を用いて～

槙原幹十朗

第3回「日本における超高速衝突実験の現状と将来展望」研究会　2013/12/19
Smart Energy Harvester using Digitally Autonomous Device International-presentation

Yuta Yamamoto, Kanjuro Makihara

Tenth International Conference on Flow Dynamics　2013/11/25
Flutter Analysis of Deployable Wing using Multibody Dynamics International-presentation

Hiroki Sakiyama, Kanjuro Makihara

Tenth International Conference on Flow Dynamics　2013/11/25
Fundamental Study of Air-Leakage Detection System for Space-Debris Impact using Mechanochromism Metal Complex International-presentation

Kakeru Nemoto, Ryo Takahashi, Kiyonobu Ohtani, Kanjuro Makihara

Tenth International Conference on Flow Dynamics　2013/11/25
Digital Energy Harvester for Random or Multimodal Structural Vibrations International-presentation

Makihara, K, Yuta Yamamoto, Y

ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems (SMASIS)　2013/09/15
スペースデブリ破壊に影響されるエレクトロダイナミックテザーのミッション成功確率

槙原幹十朗, 高橋諒, 根元翔

第55回構造強度に関する講演会　2013/08/06
Wireless Vibration Monitoring using Harvested Energy via Self-powered System International-presentation

Yamamoto, Y, Suzuki, T, Shigeta, D, Makihara, K

29th International Symposium on Space Technology and Science　2013/06/02
Novel Approach to Survivability of Electro-Dynamic Tethers in Collision with Orbital Debris International-presentation

Nemoto, K, Takahashi, R, Ohtani, K, Makihara, K

29th International Symposium on Space Technology and Science　2013/06/02
圧電素子を用いた振動体における自律型エネルギハーベスタの開発

山本雄大, 重田大輔, 鈴木孝宜, 槙原幹十朗

平成24年度日本機械学会東北支部講演会　2013/03/15
大型宇宙構造物のスペースデブリ衝突損傷に関する研究

根元翔, 高橋諒, 槙原幹十朗

平成24年度日本機械学会東北支部講演会　2013/03/15
Wireless Sensors and Communication by Energy Harvesting in a Spacecraft International-presentation

S. Kawasaki, S. Yoshida, Y. Kobayashi, K. Makihara, K. Nishikawa

International Microwave Symposium 2013　2013/03/08
光化学物質のデブリ衝撃に対する接着検討と斜めデブリシールド

根元翔, 槙原幹十朗, 長谷川美貴, 高橋諒, 櫻井翔也, 佐藤沙紀, 土屋垣内絢子, 長谷川直

平成24年度プラズマ研究会　2013/02/25
高精度大型宇宙構造システムの開発研究（スマート構造システムの開発）

田中宏明, 石村康生, 槙原幹十朗

宇宙科学シンポジウム　2013/01/08
電磁誘導制御型テザーとデブリ衝突に関する研究

高橋諒, 根元翔, 槙原幹十朗

第55回自動制御連合講演会　2012/11/17
展開アンテナ1次元モデルのスマート形状制御および電波解析

山下慎平, 槙原幹十朗

第55回自動制御連合講演会　2012/11/17
自家発電型オブザーバによる振動制御

鈴木孝宜, 山本雄大, 槙原幹十朗

第55回自動制御連合講演会　2012/11/17
An Optimization Methodology for Semi-Active Control Systems of Large Space Truss Structures International-presentation

Takezawa, A, Makihara, K

2nd International Conference on Computational Design in Engineering　2012/11/13
Enhancement of Energy-Harvesting from Random Vibration by Switched Shunt Circuit International-presentation

S. Shimose, J. Onoda, K. Makihara

63rd International Aeronautical Congress　2012/09/30
Fuzzy-Based Adaptive Multi-Modal Vibration Control with Imperfect Structural Data International-presentation

K. Makihara, C. Kuroishi, H. Fukunaga

63rd International Aeronautical Congress　2012/09/30
非定常調和励振に於ける位相シフトを考慮した能動・受動統合制御

槙原幹十朗

Dynamics and Design Conference 2012　2012/09/18
Eco-Generation of Energy from Flutter Based on Energy-Recycling Mechanism International-presentation

K. Makihara

Seventh International Colloquium on Bluff Body Aerodynamics & Applications　2012/09/02
セルフパワード型・デジタル制振ユニットに関する研究

槙原幹十朗, 鈴木孝宜, 山本雄大, 下瀬滋, 小野田淳次郎

第54回構造強度に関する講演会　2012/08/01
Layout Optimization of Piezoelectric Actuator for Energy-Recycling Semi-Active Vibration Control System International-presentation

7th China-Japan-Korea Joint Symposium on Optimization of Structural and Mechanical Systems　2012/06/18
メカノクロミズム金属錯体を用いたスペースデブリ衝突貫通穴の位置表示に関する研究

長谷川美貴, 高橋勇雄, 下瀬滋, 髙橋諒, 根元翔, 櫻井翔也, 土屋垣内絢子, 佐藤沙紀

平成23年度スペースプラズマ研究会　2012/02/27
Self-Charging and Self-Directive Vibration Control Unit with Digital Micro-Processor International-presentation

S. Takeuchi, S. Shimose, J. Onoda

14th Asia Pacific Vibration Conference　2011/12
Control of Multi Modal Structural Vibration Using Digital Self-Powered Device International-presentation

S. Shimose, J. Onoda

62nd International Aeronautical Congress (IAC)　2011/10
完全セルフパワード・デジタル振動制御システムの開発

下瀬滋, 竹内伸介, 小野田淳次郎

Dynamics and Design Conference 2011　2011/09
Energy harvesting from Wing Flutter based on Switching Control

S. Shimose, J. Onoda

フラッターの制御と利用に関する第１回シンポジウム　2011/09
エネルギハーベスティングにおけるインピーダンスマッチング手法による回収エネルギの比較

平井秀和, 福永久雄

第53回構造強度に関する講演会　2011/07
CFRP積層平板を対象としたセミアクティブ複数モード制振の制御手法による制振効果とロバスト性の検証

黒石千賀子, 福永久雄

第53回構造強度に関する講演会　2011/07
Autonoumous Power Scavenging from Structural Vibration Using Self-Powered Device International-presentation

S. Takeuchi, S. Shimose, J. Onoda

28th International Symposium on Space Technology and Science　2011/06
New Invention: Digital Self-Powered Autonomous System for Sophisticated Vibration Suppression International-presentation

S. Takeuchi, S. Shimose, J. Onoda, K. Minesugi

52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference　2011/04
セルフパワード・自律制御の機能を有するデジタル制振デバイスの開発

槙原幹十朗, 竹内伸介, 下瀬滋, 小野田淳次郎

第26回宇宙構造・材料シンポジウム　2010/12
Digital Self-powered Semi-active Unit for Advanced Energy-recycling Vibration Suppression International-presentation

Makihara K, Takeuchi, S, Shimose, S, Onoda J, Minesugi, K

61st International Aeronautical Congress (IAC)　2010/10
Investigation of vibration suppression capability of switching techniques by multiple piezoelectric actuators International-presentation

Shimose, S, Minesugi K, Makihara K, Onoda J

61st International Aeronautical Congress (IAC)　2010/10
Practical Application of Energy-Recycling Semi-Active Vibration Suppression Method to an Actual Satellite Structural Model International-presentation

Minesugi, K, Onoda, J, Shimose, S, Makihara, K, Yabu, T

58th International Aeronautical Congress (IAC)　2007/09
High-Powered Non-Linear Shock Damper using ER Fluid International-presentation

Makihara, K, Onoda, J

17th IFAC Symposium on Automatic Control in Aerospace　2007/06
エネルギ・ハーベスティング効率向上のためのスマート回路の提案

槙原幹十朗, 小野田淳次郎, 宮川毅也

第22回宇宙構造・材料シンポジウム　2006/12
Wing Flutter Suppression using Piezoelectric Switching Control International-presentation

Makihara, K, Onoda, J, Minesugi, K

The 2006 KSAS-JSASS Joint International Symposium on Aerospace Engineering　2006/11
機能性流体を用いた衛星搭載用衝撃緩衝器

槙原幹十朗, 小野田淳次郎, 峯杉賢治

第49回自動制御連合講演会　2006/11
圧電素子の電圧測定のみによるセルフセンシング準能動的制振

槙原幹十朗, 小野田淳次郎, 養父拓也

Dynamics and Design Conference 2006　2006/08
電気粘性流体による衛星搭載用衝撃ダンパの検討

槙原幹十朗, 小野田淳次郎, 峯杉賢治

第48回構造強度に関する講演会　2006/08
圧電素子を用いたエネルギ回生型準能動的手法による音響制御

宮川毅也, 槙原幹十朗, 小野田淳次郎

第48回構造強度に関する講演会　2006/08
セルフセンシング準能動的制振

養父拓也, 槙原幹十朗, 小野田淳次郎

第48回構造強度に関する講演会　2006/08
Sound Attenuation to Minimize Transmission into Rocket Faring International-presentation

Makihara, K, Onoda, J, Miyakawa, T

25th International Symposium on Space Technology and Science (ISTS)　2006/06
Novel Attenuation Method of Transmitted Sound into Rocket Faring using Energy-Harvesting Technique International-presentation

Makihara, K, Onoda, J, Minesugi, K

47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference　2006/05
Improved Self-Sensing Method for Semi-Active Vibration Suppression International-presentation

Makihara, K, Onoda, J, Minesugi, K

SPIE, Smart Structures and Materials　2006/02
スライディングモード制御に基づく準能動的制振

槙原幹十朗, 小野田淳次郎, 峯杉賢治

第48回自動制御連合講演会　2005/11
Performance Investigation of Energy-Efficient Active Vibration Control using Energy-Recycling Method International-presentation

Makihara, K, Onoda, J, Minesugi, K

16th International Conference on Adaptive Structures and Technologies (ICAST)　2005/10
準能動的制振におけるセルフセンシング手法に関する研究

槙原幹十朗, 小野田淳次郎, 峯杉賢治

第9回運動と振動の制御シンポジウム (MOVIC)　2005/09
エネルギ回生手法を用いた高エネルギ効率ハイブリッド制御

槙原幹十朗, 小野田淳次郎, 峯杉賢治

Dynamics and Design Conference 2005　2005/09
低エネルギ消費ハイブリッド振動制御

槙原幹十朗, 小野田淳次郎, 峯杉賢治

第47回構造強度に関する講演会　2005/08
Self-Sensing Actuator for Semi-Active Vibration Suppression International-presentation

Onoda, J, Makihara, K, Yabu, T

46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference　2005/04
713 Energy-Efficient Hybrid Vibration Control using Energy-Recycling Method

MAKIHARA Kanjuro, ONODA Junjiro, MINESUGI Kenji

The Proceedings of the Dynamics & Design Conference　2005

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A novel method of hybrid vibration suppression using piezoelectric materials is proposed. It combines bangbang active control and energy-recycling semi-active control. The hybrid method saves actively supplied energy and is thus a low energy-consumption vibration control. Its effectiveness in suppressing vibrations was proven in numerical simulations and experiments using a 10-bay truss structure. Moreover, an innovative method to prevent undesired control chattering is proposed to further save energy supplied from the external source.
B20 Innovative Self-sensing Method for Semi-Active Vibration Control

MAKIHARA Kanjuro, ONODA Junjiro, MINESUGI Kenji

The Proceedings of the Symposium on the Motion and Vibration Control　2005

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A novel self-sensing method using piezoelectric actuators for semi-active vibration suppression is proposed. By using extended system equations, this self-sensing method can be implemented with a Kalman filter instead of the conventional bridge circuit technique. This method is so advanced that it can be applied to multiple-degree-of-freedom (MDOF) structures with multiple piezoelectric actuators. A numerical simulation demonstrated that the self-sensing method works well on a truss structure and has significant robustness against parameter variations. Experimental results also confirmed that the self-sensing method suppresses not only single-mode vibrations but also complicated multiple-mode vibrations.
Energy-Recycling Semi-Active Isolator for Momentum-Wheel Vibration Isolation

槙原幹十朗, 小野田淳次郎

自動制御連合講演会講演論文集　2004/11/25
モーメンタムホイール振動絶縁のための準能動的エネルギ回生型アイソレータに関する研究

槙原幹十朗, 小野田淳次郎

第47回自動制御連合講演会　2004/11
Investigation on Performance in Suppressing Various Vibrations with Energy-Recycling Semi-Active Method International-presentation

Makihara, K, Onoda, J, Tsuchihashi, M

55th International Aeronautical Congress (IAC)　2004/10
圧電トランスデューサを用いたハイブリッド振動制御

槙原幹十朗, 小野田淳次郎, 峯杉賢治

第20回宇宙構造・材料シンポジウム　2004/10
自励振動を抑制するオープンループ剛性制御の安定性に関する研究

槙原幹十朗, Ecker, H

第46回構造強度に関する講演会　2004/08
Energy Recycle Semi-Active Vibration Suppression by Piezoelectric Material International-presentation

Makihara, K, Onoda, J

24th International Symposium on Space Technology and Science (ISTS)　2004/06
Energy regeneration type semi-active damping of truss structure using the piezoelectric transducer.

土橋将弘, 槙原幹十朗, 小野田淳次郎

構造強度に関する講演会講演集　2003/07/30
圧電トランスデューサを用いたエネルギ回生型準能動的制振の制振性能について

土橋将弘, 槙原幹十朗, 小野田淳次郎

第45回構造強度に関する講演会　2003/07
Comparison of Open-Loop Stiffness Control Methods to Suppress Self-Excitation Vibrations International-presentation

Makihara, K, Ecker, H

1st International Industrial Simulation Conference (ISC)　2003/06
Energy-Recycling Semi-Active Method for Vibration Suppression with Piezoelectric Transducers International-presentation

Onoda, J, Makihara, K, Minesugi, K

44th AIAA/ASME/ASCE/AHS/ASC, Structures, Structural Dynamics, and Materials Conference　2003/04
Semi-Active Vibration Suppression Based on Energy-Recycling method International-presentation

Makihara, K, Onoda, J

GAMM Conference 2003　2003/03
A Study of Mathematical Model of Piezoelectric Transducer on Energy-Recycling Semi-Active Vibration Suppression International-presentation

Makihara, K, Onoda, J

4th MATHMOD (Mathematical Modeling) Conference　2003/02
Semi-Active Vibration Suppression of Space Structures based on Energy-Recycling Method International-presentation

Makihara, K, Onoda, J

Dynamics of Machines in EuroMech Society 2003　2003/02
Energy-Recycling Semi-Active Vibration Suppression Experiment of a Truss with Piezoelectric Transducer International-presentation

Makihara, K, Onoda, J, Takeuchi, S

53rd International Aeronautical Congress　2002/10/01
圧電トランスデューサを用いたエネルギ回生型準能動的制振

槙原幹十朗, 小野田淳次郎

第44回構造強度に関する講演会　2002/07
Energy Recycle Semi-Active Vibration Suppression by Piezoelectric Material International-presentation

Makihara, K, Onoda, J, Takeuchi, S

23rd International Symposium on Space Technology and Science (ISTS)　2002/05
Energy Recycle Semi-Active Vibration Suppression by Voice Coil Transducers International-presentation

Onoda, J, Makihara, K

43rd AIAA/ASME/ASCE/AHS/ASC, Structures, Structural Dynamics, and Materials Conference　2002/04
セミアクティブショックアブソーバの検討

槙原幹十朗, 小野田淳次郎

第17回宇宙構造・材料シンポジウム　2001/10
スペースデブリの衝突解析に関する工学モデル

槙原幹十朗, 小野田淳次郎

第43回構造強度に関する講演会　2001/08
デブリ防御のための高速衝突問題

槙原幹十朗, 青木隆平

第42回構造強度に関する講演会　2000/07

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Industrial Property Rights 9

振動吸収装置

槙原幹十朗, 朝比奈慧, 阿部晋一

特許6706402

Property Type: Patent
Power Generating Device

Kanjuro Makihara, Hitoshi Sakaguchi, Chikahiro Horiguchi

特許PCT/JP2014/063319

Property Type: Patent
発電装置

特許6027246

Property Type: Patent
振動吸収装置

槙原幹十朗, 阿部晋一

特許6864318

Property Type: Patent
振動エネルギー収集装置

槙原幹十朗, 阿部晋一

特許6864317

Property Type: Patent
エネルギー変換装置

槙原幹十朗, 阿部晋一

特許6864316

Property Type: Patent
圧電素子を用いた振動制御装置及び振動制御方法

小野田淳次郎, 槙原幹十朗

Property Type: Patent
振動発電装置

加藤慎太郎, 槙原幹十朗, 阿部晋一

Property Type: Patent
発電装置、施設の環境情報センシングシステムおよび人／動物センシングシステム

成田史生, 槙原幹十朗, 橋本善一, 菊田純一, 阿部晋一

Property Type: Patent

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Research Projects 26

Combining Machine Learning and Probabilistic Predictive Vibration Control to Achieve Broadband High Accuracy Vibration Control of an Observation Satellite Extension Truss

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (B)

Institution: Tohoku University

2025/04/01 - 2029/03/31
1400級CMCの量産実証研究

Offer Organization: エネルギー・産業技術総合開発機構（NEDO）

System: 経済安全保障重要技術育成プログラム／航空機エンジン向け先進材料技術の開発・実証

Institution: 東北大学

2023/10 - 2029/03
展開型スマートテンセグリティ構造で実現する次世代モジュール型宇宙構造物の精密制御

川畑成之, 槙原幹十朗

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 基盤研究(C)

Institution: 阿南工業高等専門学校

2023/04 - 2026/03
Fundamental research on multifunctional structure that enables vibration attenuation and structural diagnosis with no power supply

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (B)

Institution: Kanazawa University

2023/04 - 2026/03
Construction of probabilistic predictive theory to realize low-energy-consumption vibration control for deployable truss observation satellite

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (B)

Institution: Tohoku University

2022/04/01 - 2025/03/31
Construction of probabilistic predictive theory to realize low-energy-consumption vibration control for deployable truss observation satellite

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (B)

Institution: Tohoku University

2022/04 - 2025/03
A new theory, vectorial and rotational canonical transformation, overcomes a barrier separating structural and mechanism analyses

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Challenging Research (Exploratory)

Institution: Tohoku University

2022/06 - 2024/03
超磁歪素子を用いた精密形状制御を可能とする革新的スマートテンセグリティ構造の開発

川畑成之, 槙原幹十朗

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 基盤研究(C)

Institution: 阿南工業高等専門学校

2020/04 - 2023/03

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本研究はテンセグリティ構造に超磁歪素子を用いた張力制御ユニットを搭載した，スマートテンセグリティ構造を開発し，数値シミュレーションと実験の両面からその有効性を実証して，次世代宇宙構造物技術の実現に資する成果を示すことが目的である．テンセグリティ構造の設計・製作の困難さに起因する形状精度や強度の低下により実用化はほとんどなされていないところであるが，当研究グループで取組んできた展開型，適応制御型のテンセグリティ構造に関する知見と，構造要素として十分な剛性と強度を有しながら大きな磁歪効果を生じる超磁歪素子を活用して，張力精密制御ユニットを新規に開発し，スマートテンセグリティ構造システムの実現を目指す．研究計画2年目である2021年度は昨年度までに開発を進めていた超磁歪素子を用いた張力制御ユニットの基礎的実験を継続して進めるとともに，ユニットの改良とユニットを搭載したテンセグリティ構造モデルの設計製作を進める．基本的な実験を速やかに進めるために3Dプリンタを活用したモデルの製作を進め，機能を検証したのちに高剛性の最終製品を製作する．ユニットの改良においては，初年度に課題があった強度を向上させるために3Dプリンタでの製作材料をPLAからCFRPに変更し，比強度を改善することができた．また，形状も一部改良し，滑らかな動作が可能となった．テンセグリティ構造モデルの設計開発においては最小要素数で構成される構造様式を採用し，シンプルなシステムで形状制御実験を行うための準備を進めた．
スペースデブリ除去テザー衛星のための超⾼速衝突実験

Offer Organization: 東北大学流体科学研究所

System: 一般公募共同研究

Institution: 東北大学

2020/04 - 2023/03
Highly Accurate Real-time Impact Force Identification of Laminated Structures and Its Application to High-speed Impact Force Identification

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (C)

Institution: Shinshu University

2019/04 - 2023/03
Novel Internal-Deformation Control to Bridge Fidelity Gap in Variable-Wing Aircraft Modeling

MAKIHARA Kanjuro

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Challenging Research (Exploratory)

Institution: Tohoku University

2020/07 - 2022/03

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We established a structural analysis method that can change the fidelity and detail of the structural model of variable wing aircraft by using the innovative concept “internal deformation control”. We solved “valley of fidelity” with “internal deformation control” of controlling the deformation constraint equation that controls the internal deformation with the model expression. Through international joint research and large wind tunnel experiments, we clarified the effectiveness of the proposed method in both theoretical analysis and demonstration experiments. The significance of challenging research is (1) a research field with few previous studies and poor knowledge, and there is a budding element that challenges based on new ideas, (2) utilize new “internal deformation control”, international cooperation, and large wind tunnel experiments to realize the true multi-fidelity.
Unified Control Theory of Semi-Active Vibration Suppression and Predictive Control to Enable Complete Prediction of Vibration

MAKIHARA Kanjuro

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (B)

Institution: Tohoku University

2018/04 - 2021/03

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Vibration control for space structures is important, and the demand for high-performance vibration control is high. In this study, we worked to create an integrated control theory that combines semi-active vibration control and predictive control, with the aim of achieving [low energy consumption] and [high vibration control performance] of semi-active vibration control. The energy-recycling semi-active suppression, which the research group has been conducting, and the predictive control for predicting future vibration states were integrated. Although it was difficult to construct an integrated theory in the conventional concept, the future state of semi-active vibration control can be predicted, and an integrated control theory can be constructed. We clarified the vibration control and prediction performance of the constructed the integrated control theory combining semi-active vibration and predictive control.
New concept "local joint coordinates" to break down the barrier of flexible deployable wing model between 2-D and 3-D dimensions

MAKIHARA Kanjuro

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Challenging Research (Exploratory)

Institution: Tohoku University

2018/06 - 2020/03

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This is a challenging study to extend a 2D flexible deployable wing model to a 3D model using a new concept [local joint coordinates]. It was conceived that by appropriately introducing "extension deformation small" based on the structural characteristics of flexible wings, it is possible to define [local joint coordinates] that can express the three-dimensional deployment angle. We challenged 3D structural modeling with this new idea. To create a realistic modeling method, we conducted a wind tunnel experiment considering three-dimensional effects.
デブリ除去のための伝導性テザーの構造形態に関する実験的研究 Competitive

槙原幹十朗

Offer Organization: 東北大学流体科学研究所

System: 一般公募共同研究

2017/04 - 2020/03
流体・構造・制御の異分野融合による展開翼モデリング法の確立 Competitive

槙原幹十朗

Offer Organization: 東北大学流体科学研究所

System: 一般公募共同研究

2017/04 - 2020/03
超低消費電力データ収集システムの研究開発 Competitive

Offer Organization: エネルギー・産業技術総合開発機構（NEDO）

System: NEDO・IoT推進のための横断技術開発プロジェクト

2016/04 - 2019/03
火星航空機の革新展開翼のための制御理論を取り込んだ流体構造連成モデル開発 Competitive

槙原幹十朗

Offer Organization: 公益財団法人カシオ科学振興財団

System: カシオ科学振興財団研究助成

2017/11 - 2018/11
光化学物質を用いたスペースデブリ衝突による空気漏れ検知の研究 Competitive

槙原幹十朗

Offer Organization: 東北大学流体科学研究所

System: 一般公募共同研究

2016/04 - 2018/03
Optimization of an energy recycling semiactive vibration suppression technique

Onoda Junjiro, MINESUGI Kenji, SHIMOSE Shigeru, MAKIHARA Kanjuro

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (C)

Institution: Japan Aerospace EXploration Agency

2014/04 - 2018/03

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A method to optimize the configuration and combination of piezoelectric transducers and inductors for the synchronized-switch-damping-on-an-inductor (SSDI) technique was established and demonstrated. The technique suppresses structural vibrations by inverting the polarity of the voltage in a piezoelectric transducer by using a switched inductive shunt circuit at each displacement extremum. The performance of SSDI depends on the impedances of the transducer and the inductor. For this study, mathematical models of the impedances of transducers and inductors for this inversion phenomenon were formulated based on experiments with various transducers and inductors. Using these models, the optimal configuration of piezoelectric transducers and that of the inductors were analytically obtained. The optimal mass budget allocation for the transducers and inductors was also formulated. Examples of optimization, involving an increase in performance by a factor of 4, were presented.
メカノクロミズム金属錯体を用いたスペースデブリ空気漏れ穴の表示システムの検討 Competitive

槙原幹十朗

Offer Organization: 東北大学流体科学研究所

System: 一般公募共同研究

2013/04 - 2016/03
センサモジュールの研究開発 Competitive

Offer Organization: エネルギー・産業技術総合開発機構（NEDO）

System: NEDO・エネルギー環境新技術先導プログラム

2015/03 - 2016/02
Powerful power-generation by using in underhanded way aeroelastic instability of growing vibration

MAKIHARA Kanjuro, KAMEYAMA Masaki, TAKEZAWA Akihiro, ATOBE Satoshi, SHIMOSE Shigeru

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Challenging Exploratory Research

Institution: Tohoku University

2013/04 - 2015/03

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Eco-generation of electrical energy harvested from the flutter phenomenon of a plate wing is studied using the quasi-steady aerodynamic theory and the finite element method. The wing is modeled as sounding rockets’ wings. We harvest electrical energy from supersonic flutter by using piezoelectric patches and electric devices. To assess their harvesting performances, we simulate flutter dynamics of the plate wing to which piezoelectric patches are attached. We demonstrate that our harvesting system can generate 10 times more electrical energy from wing flutter than conventional harvesting systems can.
Realization of Self-Powered Ubiquitous System for Vibration Control

MAKIHARA Kanjuro

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Young Scientists (A)

Institution: Tohoku University

2011/04 - 2014/03

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The study reports herein on how we developed our innovative digital self-powered autonomous system for vibration controller using a digital micro-processor. The invented unit is a completely self-powered control system that does not require any external power-supply at all. Nevertheless, this digital, self-directive, and self-powered approach enables the system to be programmable and thus versatile in control scheme. The digital-autonomous controller is much more advanced and progressive than conventional analog-autonomous ones that are clumsy and awkward. This digital system can be implemented in multiple-input multiple-output systems to suppress even complicated structural vibrations. This is quite useful for various applications to energy-saving or energy-shortage systems. Experiments demonstrate that displacement is reduced drastically. Energy dissipation in experiments is measured by various cases.
Air-leakage detection system for space-debris impact using mechanochromism metal complex

MAKIHARA Kanjuro, HASEGAWA Miki, SHIMOSE Shigeru

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Challenging Exploratory Research

Institution: Tohoku University

2011 - 2012

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The air-leakage detection system for space-debris impact was experimentally investigated. The mechanochromism metal complex that becomes luminescent due to the rapid increase of temperature and pressure was applied to pressurized chambers. We selected the glue that can remain on the aluminum bumper even after the hyper-speed impact. Consequently, the mechanochromism metal complex was shown to survive and remain on the bumper, instead of being peeled, after the impact shock. Furthermore, using a spectral instrument, we confirmed that both Fe complex and Eu complex had a significant alternation in emission spectrum after the hyper-speed impact.
準能動制振の完全無電力化

小野田淳次郎, 峯杉賢治, 竹内伸介, 槙原幹十朗

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 萌芽研究

Institution: 独立行政法人宇宙航空研究開発機構

2005 - 2006

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市販のサイリスタ、PUT、ダイオード、コイル及びコンデンサからなる簡単な電気回路を考案、作成し、これを振動するトラス構造物に取り付けた圧電トランスデューサに接続することにより、近似的にエネルギ回生型準能動制御を実現出来ることを実験にて実証した。これにより、計測系はもとよりロジック駆動の電力をも含めて外部からの電力供給を全く必要とせず、機械的振動エネルギから変換した電気エネルギのみによりロジック駆動と圧電トランスデューサ駆動を行うことにより、機械的振動を効率的に減衰させる事が出来ること、すなわち、エネルギ回生型準能動制振の完全無電力化が可能であることを示すことができた。この完全無電力制振の性能は、センサとプロセッサを用いた準能動的制振に比べればやや劣る。実験結果の詳細な分析などから、その主たる原因は、ダイオードのフォーワード電圧などの半導体素子の不可避的特性や、ノイズに対する耐性付与のための工夫の副作用などであることが判明しており、作動電圧の最適化にむけた圧電トランスデューサの積層数の最適化、半導体素子の選択等により完全無電力制振の性能は更に改善できるとの見通しも得た。また、完全無電力であること、即ち完全なメンテナンスフリーに出来ることのメリットは、この性能の若干の低下欠点を補って余りあると考えている。現在論文投稿に向けて成果を取りまとめ中である。また、今後、本手法の実際の衛星構造への適用を目指す予定である。
ロケットフェアリングの革新的音響低減手法の研究

峯杉賢治, 槙原幹十朗, 小野田淳次郎, 峯杉賢治

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 萌芽研究

Institution: 独立行政法人宇宙航空研究開発機構

2005 - 2006

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昨年度から引き続き、ロケットフェアリングの一部を模擬した板構造物と圧電素子から成る実験装置を用いて音響透過低減実験を行った。提案するエネルギ回生型音響低減手法を適用することより透過音響レベルが10dBも低減することが確認した。そこで、我々の提唱する革新的な音響低減手法が現実可能である事が実証した。音響低減効果を高めるために電気回路の改良を図った。これまで我々が提唱してきた電気回路では、圧電素子にかかる電圧値が急激に変化するために、高周波音響の励起が見られた。そこで、電圧値を急激に変化させることない制御回路を考案した。キャパシタ内に一時的に回生エネルギを保管させ、少しずつ圧電素子に戻す制御回路である。本アイデアを取り入れた音響透過実験を模擬した数値計算により、意図通りに高周波音響の励起が緩和される事が示した。高周波音響励起を緩和する機構を有する電気回路を自作し、実験装置に取り付けた。その結果、改良の余地はあるものの、想定する動作をする電気回路の実装が確認した。更に、実験だけでは用意に得られないパラメトリックスタディを目的として、振動解析と音場解析を結合した数値計算プログラムを自作し、音響低減の効果を定量的に評価した。そのプログラムを用いて、構造物に貼る圧電素子の貼り付け位置を変数とした透過音響低減制御効果の定量的な最適化を図った。更に、ロケットフェアリングのみならず、航空機キャビンにおける騒音低減に適用する事を念頭に、人間の音響感覚フィルタ(A特性)を通した音圧レベルに基づく音響低減手法の評価も行った。我々が提唱する革新的音響低減手法を他の低減手法と比較しながら総合的に評価した。

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Social Activities 6

仙台市立沖野小学校の出前講座

2019/11/29 - 2019/11/29

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航空宇宙工学について、小学校６年生を対象とする講義。
栃木県立栃木高等学校の公開講座

2019/03/15 -

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航空宇宙工学について、高校１・２年生を対象とする講義。
JAXA 宇宙科学研究所宇宙科学談話会

2016/02/24 -

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招待講演「セルフパワード振動制御手法とその応用研究について」
IHI ゲストハウスにて講演会

2012/12/13 -

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配線を無くし，複雑な多モード振動からもエネルギを回収する振動発電：完全無電力駆動ワイヤレス・ヘルスモニタリングに向けて
山梨県立甲府昭和高等学校の公開講座

2012/10/18 -

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「航空宇宙構造力学（スペーステクノロジー）」について、高校１・２年生を対象とする講義。
エネルギハーベスティング（EH）コンソーシアム

2011/08/23 -

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Media Coverage 3

Successful demonstration of fully self-powered vibration suppression

Tohoku University Press Release

2012/12/11

Type: Newspaper, magazine

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Successful demonstration of fully self-powered vibration suppression, realization of both vibration suppression and energy harvesting: Development of vibration controller using the original self-sufficient vibration suppression technology
東北大学プレスリリース

東北大学本部ホームページ

2012/12/11

Type: Other

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【制振技術】と【エネルギーハーベステイング】を同時実現する完全セルフパワード制振技術の実証に成功（独創的な自給自足型の無電源制振技術による「振動制御装置」の開発）
橋脚・車の振動瞬時に抑える

日経産業新聞

2012/08/03

Type: Newspaper, magazine

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東北大学の槙原幹十朗准教授は橋脚や自動車などに取り付けて振動を瞬時に抑える新装置を開発した．

Other 8

「自立型電源用セラミックス圧電素子の特性評価に関するJIS開発」委員会委員
アナログ素子を用いた１自由度振動系のエネルギハーベスティング

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圧電素子とアナログ素子から成る制御機構を組み込んだエネルギハーベスタの開発を行う．実験的及び理論解析的アプローチにより，研究目的を果たす．
デジタルスイッチング制御機構を組み込んだ自律型エネルギハーベスタ

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デジタルスイッチング制御機構を組み込んだ自律型エネルギハーベスタに関わる学術指導など．
先進軽量構造システム研究会
超高精度構造に関する基盤/将来技術研究高精度スマート構造システム
（JAXA共同研究）：エネルギ回生型準能動的制振の実利用性の飛躍的向上に向けた無電力化

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準能動的制振について、振動エネルギから変換した電気エネルギで制御ロジックを駆動することにより外部からの電力供給を不要とすることにより、運用性が高く、高性能な制振技術の確立。
宇宙航空研究開発機構（JAXA共同研究）：エネルギ回生型準能動的制振の衛星構造への適用

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エネルギ回生型準能動的制振を実際の衛星に適用する第一歩として、実際のハレー彗星探査機「すいせい」の構造モデルを供試体として用いた制振実験を行って本手法の制振効果についての確認・検証。
研究委員：スマート構造システムの将来技術と実用化に関する研究会

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