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首页> 外文期刊>Mechanical systems and signal processing >A broadband quad-stable energy harvester and its advantages over bi-stable harvester: Simulation and experiment verification
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A broadband quad-stable energy harvester and its advantages over bi-stable harvester: Simulation and experiment verification

机译：宽带四稳态能量采集器及其与双稳态采集器相比的优势：仿真和实验验证

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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.
机译：本文提出了一种新型的四稳态能量收集器（QEH），用于收集振动能量。 QEH由带有尖端磁体和三个外部固定磁体的压电双压电晶片悬臂梁组成。导出了QEH的势能，它具有四个势阱和三个低势垒。这意味着与双稳态能量采集器（BEH）相比，QEH需要相对较低的激发能来穿过势垒。在不同激发水平下对BEH和QEH进行了仿真。结果表明，与BEH相比，QEH具有较小的阈值和更宽的频率范围，可用于发生跳线。因此，QEH可以发出较大的输出电压。进行了相应的实验以进行验证。实验结果与模拟结果吻合，这说明QEH可以大大提高收获效率。

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  • 来源
    《Mechanical systems and signal processing》 |2017年第ptaa期|158-168|共11页
  • 作者

    Zhiyong Zhou; Weiyang Qin; Pei Zhu;

  • 作者单位

    Department of Engineering Mechanics, Northwestern Polytechnical University, Xi'an 710129, People's Republic of China;

    Department of Engineering Mechanics, Northwestern Polytechnical University, Xi'an 710129, People's Republic of China;

    Department of Engineering Mechanics, Northwestern Polytechnical University, Xi'an 710129, People's Republic of China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Piezoelectric bimorph; Quad-stable energy harvester; Snap-through;

    机译：压电双压电晶片四稳态能量采集器;捕捉式;

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