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首页> 外文会议>International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Microsystems >Numerical and experimental study of a novel body-mounted piezoelectric energy harvester based on synchronized multi-magnet excitation
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Numerical and experimental study of a novel body-mounted piezoelectric energy harvester based on synchronized multi-magnet excitation

机译：基于同步多磁激励的新型压电式能量采集器的数值与实验研究

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This paper presents results of finite element analysis and testing of a novel frequency up-converting multi-magnet piezoelectric vibration energy harvester, which advantageously exploits multiple magnetic excitation events per single cycle of out-of-plane plucking together with amplification of driving magnet speed in order to provide sufficiently stable generation of nearly constant high average power when subjected to real-life human body movements. It is based on a cantilevered bimorph that is magnetically deflected and released (plucked) by a couple of driving magnets that are accelerated by means of magnets placed on inertial rotor. It was demonstrated that the proposed device operating in a synchronized multi-magnet excitation regime outperforms its conventional single-magnet counterparts, thereby constituting a viable vibration energy harvesting concept that addresses key challenges associated with time-varying ultralow frequency biomechanical excitations.
机译：本文介绍了一种新型频率上变频多磁体压电振动能量采集器的有限元分析和测试结果，该采集器有利地在平面外拔除的每个循环中利用多个磁激励事件，并放大了驱动磁体的速度。为了在经受现实的人体运动时提供足够稳定的，几乎恒定的高平均功率产生。它基于一个悬臂式双压电晶片，该双压电晶片通过一对驱动磁铁发生磁偏转和释放（弹拨），该驱动磁铁通过置于惯性转子上的磁铁进行加速。事实证明，拟议中的设备在同步多磁体励磁方式下的性能优于其传统的单磁体同类产品，从而构成了可行的振动能量收集概念，解决了与时变超低频生物机械励磁相关的关键挑战。

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