A broadband quad-stable energy harvester and its advantages over bi-stable harvester: Simulation and experiment verification

Zhiyong Zhou, Weiyang Qin, Pei Zhu

科研成果: 期刊稿件文章同行评审

134 引用 (Scopus)

摘要

This paper presents a novel quad-stable energy harvester (QEH) to harvest vibration energy. The QEH is composed of a piezoelectric bimorph cantilever beam with a tip magnet and three external fixed magnets. The potential energy of the QEH is derived, which has four potential wells and three low barriers. This implies that the QEH needs relatively lower excitation energy to cross the barriers than the bi-stable energy harvester (BEH). Simulations are carried out for the BEH and QEH at different levels of excitations. Results show that the QEH owns a smaller threshold and a wider range of frequencies for occurrence of snap-through than the BEH. Thus the QEH can give out a large output voltage. Corresponding experiments were performed for validation. The experimental results are in agreement with the simulations, which means that the QEH can improve the harvesting efficiency considerably.

源语言英语
页(从-至)158-168
页数11
期刊Mechanical Systems and Signal Processing
84
DOI
出版状态已出版 - 1 2月 2017

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