实现压电致动器精密定位的模糊控制系统研究  

Development of Fuzzy Controller for Precision Positioning of Piezo Actuator

作　　者：张建华[1] 葛红宇[1] 李宏胜[1] 滕福林[1] 

机构地区：[1]南京工程学院,南京211167

出　　处：《中国机械工程》2012年第22期2676-2680,共5页China Mechanical Engineering

基　　金：江苏省自然科学基金资助项目(BK2009350);江苏省高校自然科学基金资助项目(09KJB460005)

摘　　要：针对压电精密定位系统的精度与实时性问题,提出一种适于压电精密定位系统的模糊控制方法,实现了压电致动器的迟滞特性和阶跃响应的实验建模。设计了压电致动器的模糊控制器,结合仿真结果,实现了基于32位嵌入式处理器S3C2410的压电精密定位模糊控制系统。测试结果表明:系统阶跃响应稳态误差小于0.1μm,调节时间在3ms以内,超调量小于20%;正弦响应误差范围为-0.24～0.20μm。Aimming to solve problems in accuracy and reality performance of piezo precision posi- tioning system, a fuzzy method was proposed. Hysteresis and step response model of piezo actuator were built with series experiments, Then, fuzzy controller for piezo actuator was suggested, simula- ted and achieved with a 32--bit embedded microprocessor, S3C2410. System tests on precision posi- tioning indicate that about the step response, the steady state error is less than 0. 1μm, the settling time is less than 3ms and the overshoot is less than 20% ; about the sinusoidal response, the displace- ment error is ranged from --0.24μm to 0. 2μm.

关 键 词：模糊控制 响应 精密定位 压电致动器 

分 类 号：TP273.4[自动化与计算机技术—检测技术与自动化装置]