摘要
针对超磁致伸缩驱动器在精密定位控制中存在的迟滞和位移非线性等不足,提出了一种参数自适应模糊PID控制器,将模糊控制器和PID控制器结合在一起,利用模糊逻辑控制,并把Mat-lab中的Fuzzy Toolbox和Simulink有机结合起来,实现了PID控制器参数在线自调整。该控制器通过模糊推理来实现控制器参数的实时优化,且算法实现简单。应用Matlab软件工具对模糊自适应调节技术进行了仿真研究和相关实验分析。结果表明:模糊PID控制系统比常规的PID控制能更有效地改善超磁致伸缩微位移系统的动态和稳态性能,增强系统的鲁棒性。
Giant magnetostrictive actuators are widely used in the field of precise positioning, but their nonlinear characteristics of hysteresis make them difficult to be controlled. Therefore, a kind of parameter self-adaptive fuzzy PID control system is presented. It uses a fuzzy logic controller which is combined with a PID controller and the or- ganic combination of Fuzzy Toolbox and Simulink that makes the parameter＇s self-adaption of the PID controller pos- sible. The easily realized real-time optimization of controller parameters by fuzzy-reasoning is carried out, and the test for the actuator was completed. The results demonstrate that the control effect is good, and the controller is more suitable for magnetostrictive material micro-displacement system.
出处
《机械科学与技术》
CSCD
北大核心
2011年第6期1025-1027,1032,共4页
Mechanical Science and Technology for Aerospace Engineering
关键词
超磁致伸缩
微位移
模糊PID
giant magnetostrictive actuator
micro-displacement
fuzzy PID
