改进型自适应模糊PID复合控制器在某转台中的应用

摘要

The improved adaptive fuzzy PID hybrid controller is developed for improving the performance of turntable control system with nonlinear and the uncertain factor. Analysis the AF/PID controller, we designed the fusion function which is perfectly fusing the control output of fuzzy controller and revolution PID controller. And for achieve adaptive and smoothly adjusting the rule of fuzzy control, the arithmetic of on-line tuning rules is developed, and taking certain turntable azimuth control system as example. The result shows that the method has advantages of simple structure, high efficiency, can avoid the output oscillating, realize seamless output, and extensive use range of fuzzy controller.%针对某转台系统中非线性不确定性因素对动态响应和稳定精度的影响,设计一种改进型自适应模糊PID复合控制器.对AF/PID控制器进行分析,设计融合函数将模糊控制器和变型PID控制器的输出量合理融合,提出一种控制规则在线学习调整的算法,达到自适应平稳调整模糊控制规则,并以某转台方位位置控制系统进行试验验证.结果表明:该方法结构简单、计算效率高,能实现无缝变化输出,避免输出振动,扩大模糊控制器的使用范围.