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| Research on the influence of inverse piezoelectric effect on the performance of bi-stable piezoelectric energy harvester |
| Received:August 20, 2021 Revised:November 17, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20210820001 |
| KeyWord:inverse piezoelectric effect bi-stable piezoelectric energy harvester |
| Author | Institution |
| 李园芳 |
安徽农业大学 工学院, 合肥 |
| 何孔智 |
安徽农业大学 工学院, 合肥 |
| 张宇 |
安徽农业大学 工学院, 合肥 |
| 康小方 |
安徽建筑大学 土木工程学院, 合肥 |
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| Abstract: |
| In order to study the specific influence of the inverse piezoelectric effect on the piezoelectric energy harvesting efficiency, this paper analyzed the energy expressions of distributed parameter model of a bi-stable piezoelectric energy harvester.Then the dynamic equation of the energy harvesting system was derived using the generalized Hamilton variational principle.Finally, the analytical solutions of the dynamic response were obtained by applying harmonic balance method.The influence of the inverse piezoelectric effect on the dynamic response of the energy harvesting system was discussed by comparing the numerical simulation results under different excitation frequencies.The results show that the influence of the inverse piezoelectric effect on the piezoelectric energy harvesting efficiency under different working conditions is not simply a restraining effect.Under a high frequency excitation with a certain excitation intensity, the inverse piezoelectric effect enhances the piezoelectric energy harvesting efficiency.However, the energy harvesting effect under low excitation is suppressed throughout the whole process. |