摘要
阐述了压电陶瓷微位移执行器的驱动原理,介绍了执行器的性能与应用情况;利用自行设计的输出特性测试系统,对WTYD0808042压电陶瓷微位移执行器进行了相关实验研究,分析了执行器的非线性和迟滞特性;采用Duhem算子建立了压电执行器的迟滞模型,利用建立的Duhem模型作为PID反馈控制的前馈环节进行闭环精密定位控制的研究。实验结果表明:该模型能够有效降低非线性和迟滞特性对压电执行器位移输出精度的影响,提高执行器的动态响应特性。
The actuation principle of the piezoelectric ceramics micro-displacement actuator is elaborated, and the characteristics and the applications of the actuator are introduced. Relative experimental researches on the WTYD0808042 piezoelectric ceramics micro-displacement actuator are carried out with self-designed output characteristics test system, and the non-linear and hysteresis of actuator are analyzed. A Duhem model is used to establish the hysteresis model of a piezoelectric actuator. A research on close-loop precision positioning control using the established Duhem model as a feed forward segment of a PID feed-back control is conducted. Experimental results show that this model can effectively eliminate the effects of nonlinearity and hysteresis which affect the displacement output precision of a piezoelectric actuator,and improve the dynamic response property.
出处
《传感器与微系统》
CSCD
北大核心
2010年第2期51-53,共3页
Transducer and Microsystem Technologies
基金
浙江省自然科学基金资助项目(Y107792)
关键词
压电陶瓷微位移执行器
输出特性测试
Duhem模型
精密定位
piezoelectric ceramics micro-displacement actuator
output characteristics test
Duhem model
accurate positioning
