可变论域自适应Fuzzy-PID控制器的设计与研究  

Design and Research of Adaptive Fuzzy-PID Controller with Variable Universe

作　　者：马祥兴[1] 

机构地区：[1]南京铁道职业技术学院苏州校区,江苏苏州215137

出　　处：《微计算机信息》2010年第25期69-71,共3页Control & Automation

摘　　要：针对常规模糊PID控制器由于论域固定带来的不足,提出了一种基于可变论域控制思想、具有自适应能力的Fuzzy-PID控制方法。通过变论域调整因子环节,根据系统响应各阶段的误差和误差变化,在线实时调整伸缩因子,从而改善量化因子、比例因子和模糊PID控制器的参数。该控制方法较好地解决了控制规则数量与控制精度间的矛盾,实现了论域随系统控制要求进行自适应伸缩。仿真研究表明,该控制方法具有自适应能力强,实时控制性能好的特点。应用结果表明,系统的鲁棒性、动态特性和稳态精度等明显优于常规模糊PID控制器。According to the shortage caused by fixed universe of the conventional Fuzzy PID controller,an adaptive Fuzzy-PID control method based on the control thought of variable universe is proposed.Through the adjustment of the factor link by the variable universe and according to the error and error change of system response of each phase,it adjusts real-time the flex factors online,thereby improving the quantification factors,scaling factors and fuzzy PID controller parameters.This control method has solved the contradiction between control rule quantity and control precision well,and realized the universe ＇s adaptive flex along with the control request of the system.Simulation results show that this method has strong adaptive ability and good real -time control performance.The application results show that the robustness,dynamic characteristic and steady precision of the system is obviously superior to the conventional fuzzy PID controller.

关 键 词：可变论域 自适应调整 伸缩因子 模糊PID控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]