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首页> 外文期刊>Smart Materials & Structures >A broadband electret-based vibrational energy harvester using soft magneto-sensitive elastomer with asymmetrical frequency response profile
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A broadband electret-based vibrational energy harvester using soft magneto-sensitive elastomer with asymmetrical frequency response profile

机译：基于宽带驻极振动能量收割机，具有具有不对称频率响应曲线的软磁敏感弹性体

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摘要

This letter reports a broadband electret-based vibrational energy harvester (eVEH) targeting at applications in low frequency (4-10 Hz) and low excitation (0.1-0.2 g) scenarios. A soft magneto-sensitive elastomer (SMSE) cantilever with low resonance and strong softening nonlinear behaviour is utilized as the broadband oscillator. A spring suspended end-stopper attached to the electret converts low frequency excitation of the SMSE cantilever to high frequency vibrations of the eVEH for efficiency enhancement. An asymmetrical frequency response profile for the SMSE cantilever is intentionally designed to preserve its softening behaviour for broadband performance when the end-stopper is engaged. A proof-of-concept prototype is fabricated and the experiment shows that within a working frequency range of 4.0-8.2 Hz, the eVEH can harvest the average power output of 40.23. mu W under a base excitation of 0.2 g.
机译：这封信在低频（4-10 Hz）和低励磁（0.1-0.2克）方案中报告了基于宽带驻极的振动能量收割机（EVEH）。 具有低谐振和强软化非线性行为的软磁敏感弹性体（SMSE）悬臂用作宽带振荡器。 附接到驻极体的弹簧悬挂端止动件将SMSE悬臂的低频激励转换为EVEH的高频振动，以实现效率增强。 有意设计SMSE悬臂的不对称频率响应轮廓，以在终端止动器接合时保持其软化行为进行宽带性能。 制造概念校样原型，实验表明，在4.0-8.2Hz的工作频率范围内，EVEH可以收集40.23的平均功率输出。 在碱基激励下0.2克的μW。

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