Vibration energy harvesting with a clamped piezoelectric circular diaphragm
| Autor: | Wei Wang, Tongqing Yang, Xurui Chen, Xi Yao |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Materials science
Process Chemistry and Technology Acoustics Diaphragm (mechanical device) Piezoelectricity Surfaces Coatings and Films Electronic Optical and Magnetic Materials Power (physics) law.invention Acceleration law Materials Chemistry Ceramics and Composites Power semiconductor device Proof mass Resistor Energy harvesting |
| Zdroj: | Ceramics International. 38:S271-S274 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2011.04.099 |
| Popis: | With the rapid development of low power devices, the technology of energy harvesting has improved greatly. The performance of a PZT diaphragm energy harvester is demonstrated in this paper. Under an acceleration of 9.8 m/s 2 , a pre-stress of 1.2 N applied on the harvester, a power of 12 mW was generated at the resonance frequency of the harvester (113 Hz) across a 33 k ohm resistor. It was found that the energy from the harvester increases while its resonance frequency decreases when the pre-stress increasing. The contacting part between the proof mass and the piezoelectric disc was found another key element, which would influence the performance of the harvester. With its simple structure, the diaphragm harvester may push energy harvesting devices towards practical applications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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