标题：Modeling and Control of Rate-Dependent Hysteresis in Piezoelectric Actuators
作者：Zhang Guilin; Zhang Chengjin; Gu Jason
作者机构：[Zhang Guilin; Gu Jason] Shandong Univ, Sch Control Sci & Engn, Jinan 250061, Peoples R China.; [Zhang Chengjin] Shandong Univ Weihai, Sch Mech Elec 更多
会议名称：32nd Chinese Control Conference (CCC)
会议日期：JUL 26-28, 2013
来源：2013 32ND CHINESE CONTROL CONFERENCE (CCC)
关键词：Piezoelectric actuator; Rate-dependent hysteresis; Prandtl-Ishlinskii; model
摘要：Piezoelectric actuators show dependency of the output displacement on the rate of change of the applied input voltage. In this paper, a rate-dependent Prandtl-Ishlinskii model is developed to characterize the time-dependent hysteresis in the piezoelectric actuators. This model employs the dynamic threshold and weighting values formulated on the speed of the input voltage. The validation of the rate-dependent Prandtl-Ishlinskii model is demonstrated by comparing its out responses with the measured responses obtained for a piezoelectric actuator under different input frequencies. Finally, a feedforward controller with an inverse rate-dependent Prandtl-Ishlinskii model is designed to account for the dynamic hysteresis. The results show that the hysteresis nonlinearities are significantly reduced at both the lower and higher frequencies.