| Project/Area Number |
24656157
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Dynamics/Control
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| Research Institution | Kyoto Institute of Technology |
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Principal Investigator |
MASUDA Arata 京都工芸繊維大学, 工芸科学研究科, 准教授 (90252543)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | エナジーハーベスティング / 振動発電 / 非線形振動 / 引き込み / 双安定 |
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| Research Abstract |
Vibration energy harvesting is a technology that aims to collect unused or wasted mechanical energy from the environment and convert it to electric energy. It has attracted increasing attention in the last decade as a local and decentralized power source for embedded systems. In this research, a novel class of wide-band and high-power-efficiency energy harvesting devices is realized by combining a nonlinear hardening oscillator such as impact oscillator and bistable oscillator with a self-excitation circuit. As a consequence, the power-bandwidth trade-off, one of the most significant problems that impede the practical use of the vibration harvesting devices, has been resolved for the case of the periodic excitation. Furthermore, a new idea which can lead to high power regeneration from a low frequency vibration source has been suggested by pursuing the improvement of the power conversion efficiency from the mechanical input energy to the retrieved electric energy.
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