This paper presents a centrifugal softening impact energy harvester with the bistability using flextensional transducers. The bistability is firstly demonstrated to further enhance the advantages of the centrifugal softening effect in improving the impact energy output at low rotational speeds. In the harvester, two flextensional transducers are impacted by a centrifugal softening driving beam, which is experiencing the magnetic repulsive force at the same time. The flextensional transducers are adopted for their high electromechanical coupling coefficient and robustness under the large impact force. A theoretical model is built and validated by experiments. Experimental results show that the bistable harvester can generate higher energy output than the non-linear monostable and linear harvesters at the rotational speed ranging from 60 rpm to 360 rpm and a certain clearance of 1.07 mm. Its maximum instantaneous power and RMS voltage at 60 rpm are respectively increased by 323.1%...

中文翻译：

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离心软化冲击能量采集器，具有双稳性，使用低张力传感器实现低转速

本文介绍了一种使用挠性传感器的双稳态离心软化冲击能量采集器。首先证明了双稳态性，以进一步增强离心软化作用的优点，以改善低转速下的冲击能量输出。在收割机中，两个弯曲张力传感器受到离心软化驱动梁的冲击，该梁同时受到磁排斥力。由于在大冲击力下具有高的机电耦合系数和鲁棒性，所以采用了挠性张力传感器。建立了理论模型，并通过实验验证。实验结果表明，双稳态收割机在60 rpm至360 rpm的转速和1.07 mm的一定游隙下可以产生比非线性单稳态收割机和线性收割机更高的能量输出。在60 rpm时其最大瞬时功率和RMS电压分别增加了323.1％...