Miniature Vibration-Based Generator with Elastic Base
碩士 === 國立交通大學 === 機械工程系所 === 96 === Nowadays the research on harvesting energy using piezoelectric generators is in great demand. Most research puts emphasis on mechanism design or power generation method, but few on the dynamic properties of piezoelectric benders, e.g.resonant frequency. This work...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2008
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| Online Access: | http://ndltd.ncl.edu.tw/handle/46735482464907531518 |
| Summary: | 碩士 === 國立交通大學 === 機械工程系所 === 96 === Nowadays the research on harvesting energy using piezoelectric generators is in great demand. Most research puts emphasis on mechanism design or power generation method, but few on the dynamic properties of piezoelectric benders, e.g.resonant frequency. This work achieves the effect of elastic base by adding springs with prescribed stiffness and a printed circuit board with given mass between piezoelectric benders and bases to make the resonant frequency of piezoelectric benders close to the low frequency of ambient vibration. To look for the elastic base which can make piezoelectric benders generate more electric power, we compare different elastic bases. Accordingly, more electric power is generated from piezoelectric generators using a designed elastic base. We have compared different elastic bases based on power generated by piezoelectric benders. We obtained the best result of 90mV and 396 nW when index a equals 4 and index r equals 2.
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