2012 Fiscal Year Final Research Report
Study on practical application of high-efficiency vibration power generationdevice using piezoelectric element
| Project/Area Number |
22560232
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Dynamics/Control
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| Research Institution | Tokyo City University (2011-2012)
Shonan Institute of Technology (2010) |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
ICHIKI Masaaki (独)産業技術総合研究所, 集積マイクロシステム研究センター, 研究チーム長 (00267395)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 音響エネルギー / 振動エネルギー変換 |
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| Research Abstract |
Power generation characteristics of PZT elements doped with niobium (Nb) to improve its electrical properties under vibration loads are evaluated by vibration tests. It is identified that Nb doping concentration to achieve maximum electric power generation is 1.0 mol%. Next, it is confirmed that the PZT element doped with Nb has sufficient durability of up to 10 million cycles by durability vibration tests. Moreover， power generation characteristics are greatly improved by using laminated PZT elements. In this study, the electric power of about 8 mW is obtained by using the laminated PZT element of 7 layers. It is confirmed that very high electric power can be obtained by using the laminated PZT element as the vibration generating device.
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