传感技术学报2016，Vol.29Issue(5)：693-700,8.DOI:10.3969/j.issn.1004-1699.2016.05.012
基于弹性支撑与放大的宽频压电振动能量采集器模型与实验研究
Model and Experimental Researches of a Broadband Piezoelectric Vibration Energy Harvester with an Elastic Support and Magnifier
摘要
Abstract
The piezoelectric vibration energy harvester with rigid support(RS-PVEH)has some disadvantages of nar-row operating band and low harvesting efficiency. In order to solve these issues,this article presents a broadband piezoelectric vibration energy harvester with an elastic support and magnifier(ES-PVEH). The electromechanical coupling model of the ES-PVEH was established with finite element method,the effects of the structure parameters on the output performances in frequency domain were numerically analyzed. The lumped parameter governing equa-tions(LPGE)of the ES-PVEH was consequently derived based on the mechanical balance and electrical balance principles,and the time responses,such as the displacement,the tip velocity,the harvesting voltage and the output power of the ES-PVEH,were obtained by solved the governing equations with 4-5 order Runge-Kutta algorithm. Finally,the ES-PVEH prototype was developed and the experimental setup was presented,some experiments were carried out to testify the validities of the theoretical models. The results show that the ES-PVEH can not only broaden the operating frequency bandwidth,but also improve the output performance.关键词
压电能量采集器/弹性支撑与放大/有限元分析/机电耦合模型/宽频带Key words
piezoelectric vibration energy harvester/elastic support and magnifier/finite element analysis/govern-ing equation/broadband分类
信息技术与安全科学引用本文复制引用
李萧均,王光庆,杨斌强..基于弹性支撑与放大的宽频压电振动能量采集器模型与实验研究[J].传感技术学报,2016,29(5):693-700,8.基金项目
国家自然科学基金项目(51277165) （51277165）
浙江省自然科学基金项目(LY15F010001) （LY15F010001）
