Extended lumped parameter electromechanical model of piezoelectric actuators

M. Ruderman, Yuki Kamiya, M. Iwasaki
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引用次数: 4

Abstract

The lumped parameter electromechanical model of piezoelectric actuators, proposed former in the literature, is extended by the state-varying capacitance and Voigt-Kelvintype linear creep effect. This relates the converse piezoelectric effect, i.e. actuator displacement, to the remnant polarization of piezo-ceramic and associated creeping charge flow. The proposed modeling extension interconnects both the electrical and mechanical domains and provides a physically reasonable cause-effect relationship of the creep effect. Furthermore, the role of the initial hysteresis state, often omitted when modeling the piezoelectric actuators, is emphasized and explained in details, while using the play- and stop-type hysteresis operators. A series of experimental model verification are accomplished on the standard piezoelectric stack actuator when measuring the controllable input voltage and output displacement.
压电作动器的扩展集总参数机电模型
文献中提出的压电作动器的集总参数机电模型,通过状态变电容和Voigt-Kelvintype线性蠕变效应进行了扩展。这将反向压电效应,即驱动器位移,与压电陶瓷的残余极化和相关的爬行电荷流联系起来。所提出的模型扩展连接了电气和力学两个领域,并提供了一个物理上合理的蠕变效应因果关系。此外,在使用暂停和停止型迟滞算子时,强调并详细解释了初始迟滞状态的作用,这在压电驱动器建模时经常被忽略。在测量可控输入电压和输出位移时,对标准压电堆叠作动器进行了一系列实验模型验证。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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