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Dynamic analysis of piezoelectric based energy harvester under periodic excitation

机译:周期激励下压电基于电压能量收割机的动态分析

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In the present work, a vertical cantilever beam fixed with a torsional spring at one end and a tip mass at free end is analyzed as an energy harvester using piezoelectric patch for super-harmonic resonance condition. This model is non-linear dynamical system; it is exhibit super-harmonic resonances that can activate large amplitude motions at fraction integers of the fundamental frequency of the system. Such resonances offer a unique and untapped opportunity for harnessing vibratory energy from excitation sources with low frequency components. The nonlinear temporal differential equation of motion having periodic excitation is solved by using method of multiple scales. The closed form expressions for super-harmonic resonance condition are determined. The generated voltage is estimated for a wide range of system parameters.
机译:在本作工作中,使用压电贴片以一端的倾斜弹簧固定在一端的扭转弹簧固定在一端的扭转弹簧,并且使用压电贴片以进行超声谐振条件。该模型是非线性动力系统;它表现出超级谐波共振,可以在系统的基频的分数整数下激活大的幅度动作。这种共振提供了独特而未开发的机会,用于利用具有低频分量的激发源的振动能量。通过使用多个尺度的方法来解决具有周期激励的运动的非线性时间微分方程。确定了用于超声谐振条件的闭合形式表达式。估计所产生的电压为各种系统参数。

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