| Project/Area Number |
26420818
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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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| Research Field |
Aerospace engineering
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| Research Institution | Japan Aerospace EXploration Agency |
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Principal Investigator |
Onoda Junjiro 国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 名誉教授 (20013740)
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| Co-Investigator(Renkei-kenkyūsha) |
MINESUGI Kenji 国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 教授 (90239327)
SHIMOSE Shigeru 国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 主任研究開発員 (80443282)
MAKIHARA Kanjuro 東北大学, 大学院工学研究科, 准教授 (60392817)
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| Project Period (FY) |
2014-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 制振 / 圧電素子 / 準能動的制振 / 最適化 / 準能動的 / エネルギ回生 / 非線形性 |
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| Outline of Final Research Achievements |
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.
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