Nonlinear Dynamic Modeling and Experiment of Stack-type Piezoelectric Actuator Based on System Similarity Method
GUAN Chang-bin 1 CHEN Jun 1 WANG Xu-dong 1 JIAO Zong-xia 2
1. Beijing Institute of Control Engineering, Beijing 100080;
2. School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191
Abstract: According to the similarity method of mechanical system and electrical system, a nonlinear circuit model of stack-type piezoelectric actuator is established by transforming its electromechanical coupling model to electrical domain. The identification method of hysteresis factor in the nonlinear circuit model is given out and the identification experiment for a commercial stack-type piezoelectric actuator is carried out. Based on the established nonlinear circuit model and the identified hysteresis factor, the nonlinear dynamic characteristics of the piezoelectric actuator are simulated. The simulated hysteresis curve agrees well with the experiment result which verifies the theory. The proposed modeling method describes the electromechanical coupling characteristic and nonlinear hysteresis characteristic of stack-type piezoelectric actuator in electrical domain, which makes the modeling have obvious physical sense. Therefore, this paper has practical significance to study the dynamic characteristics and control algorithm of stack-type piezoelectric actuator.
官长斌 1, 陈君 1,汪旭东 1,焦宗夏 2. 基于系统相似方法的叠堆型压电驱动器非线性动力学建模及实验研究[J]. 振动与冲击, 2015, 34(9): 15-20.
GUAN Chang-bin 1 CHEN Jun 1 WANG Xu-dong 1 JIAO Zong-xia 2. Nonlinear Dynamic Modeling and Experiment of Stack-type Piezoelectric Actuator Based on System Similarity Method. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(9): 15-20.
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