2022 Fiscal Year Final Research Report
Proposal of Rotational Measurement System in Extreme Environment and Multi-Body Dynamics for Motion Analysis and Optimization
| Project/Area Number |
19K04277
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 20010:Mechanics and mechatronics-related
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| Research Institution | Aoyama Gakuin University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
武田 真和 青山学院大学, 理工学部, 助教 (40845640)
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| Project Period (FY) |
2019-04-01 – 2023-03-31
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| Keywords | 計測 / 回転 / 圧電素子 / 極限環境 / ノンスムース / 柔軟構造 / マルチボディダイナミクス |
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| Outline of Final Research Achievements |
As a rotation angle measurement sensor for a robot system in a nuclear fusion reactor, this research proposed a method of measuring the rotation angle from the piezoelectric voltage generated by the deformation of a flexible beam to which a piezoelectric element is attached and an eccentric cam coupled to the rotation axis. This study also proposed a method to add robustness by combining several of the proposed systems and introducing a Kalman filter and a charge amplifier. In the proposed method, depending on the angular velocity of the measurement axis, detachment and collision may occur between the cam and the beam, affecting the measurement system. Therefore, a formulation and analysis method for flexible structures with contact based on multi-body dynamics and non-smooth dynamics was proposed, and the effectiveness of the proposed method through basic experiments was demonstrated.
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| Free Research Field |
機械力学，マルチボディダイナミクス
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| Academic Significance and Societal Importance of the Research Achievements |
近年，急速に実用化を目指した動きが活発化している核融合発電は，主にその発電の実証や能力向上についての着目した研究が多いものの，実用化に必須の保守・管理に関する研究は極めて少なく，本研究は核融合発電の実用化に伴う課題解決に寄与する．また，本研究で提案する計測システムにおいて発生するノンスムースな接触を伴う柔軟構造物の運動に対して，一解析手法の提案および実験検証を行っており，まだ未確立の問題に対して一案を提案していることから，同分野において意義のある結果である．また，本解析手法は本計測システムに限らず，様々な産業界で現れる現象に適用できる可能性が高く，より一般的な展開につながる成果である．
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