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首页> 外文期刊>Mechanical systems and signal processing >Design of MEMS piezoelectric harvesters with electrostatically adjustable resonance frequency
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Design of MEMS piezoelectric harvesters with electrostatically adjustable resonance frequency

机译：具有静电可调节谐振频率的MEMS压电采集器的设计

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摘要

In this paper the analytical analysis of an adaptively tuned piezoelectric vibration based energy harvester is presented. A bimorph piezoelectric energy harvester is suspended between two electrodes, subjected to a same DC voltage. The resonance frequency of the system is controllable by the applied DC voltage, and the harvested power is maximized by controlling the natural frequency of the system to cope with vibration sources which have varying excitation frequencies. The nonlinear governing differential equation of motion is derived based on Euler Bernoulli theory, and due to the softening nonlinearity of the electrostatic force, the harvester is capable of working over a broad frequency range. The steady state harmonic solution is obtained using the harmonic balance method and results are verified numerically. The results show that the harvester can be tuned to give a resonance response over a wide range of frequencies, and shows the great potential of this hybrid system.
机译：在本文中，对基于自适应调谐的压电振动的能量收集器进行了分析分析。双压电晶片压电能量收集器悬挂在两个电极之间，并承受相同的直流电压。系统的谐振频率可由施加的直流电压控制，并且通过控制系统的固有频率以应对具有变化的激励频率的振动源，可以最大限度地提高收集的功率。基于Euler Bernoulli理论推导了非线性控制运动微分方程，由于静电力的软化非线性，收割机能够在较宽的频率范围内工作。使用谐波平衡法获得稳态谐波解，并对结果进行数值验证。结果表明，可以对收割机进行调谐，使其在很宽的频率范围内产生共振响应，并显示出这种混合动力系统的巨大潜力。

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  • 来源
    《Mechanical systems and signal processing》 |2016年第12期|360-374|共15页
  • 作者

    H. Madinei; H. Haddad Khodaparast; S. Adhikari; M.I. Friswell;

  • 作者单位

    College of Engineering, Swansea University, Bay Campus, Fabian Way, Crymlyn Burrows, Swansea, SA1 8EN, United Kingdom;

    College of Engineering, Swansea University, Bay Campus, Fabian Way, Crymlyn Burrows, Swansea, SA1 8EN, United Kingdom;

    College of Engineering, Swansea University, Bay Campus, Fabian Way, Crymlyn Burrows, Swansea, SA1 8EN, United Kingdom;

    College of Engineering, Swansea University, Bay Campus, Fabian Way, Crymlyn Burrows, Swansea, SA1 8EN, United Kingdom;

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

    MEMS devices; Piezoelectric; Energy harvesting; Harmonic balance;

    机译：MEMS器件;压电能量收集;谐波平衡;

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