摘要
通过对常规PID控制器的结构分析,设计出一种新型的二维PID模糊控制器,其结构形式简称为fuzzy PD+fuzzy ID型。根据模糊规则的图解分析,提出fuzzy ID控制器的输入变量(偏差和偏差变化加速率)与输出变量之间的控制结构,并确定两控制器的模糊控制规则的相似性。通过对该PID模糊控制器的结构分析,给出与常规PID控制器系数KP、KI、KD之间的解析关系,表明该PID模糊控制器本质上是一种非线性的PID控制器。仿真结果表明比fuzzy PD和fuzzy PI控制性能优越。
Analyzed the structure of conventional PID controller,a new two-dimension PID fuzzy controller,namely fuzzy PD＋ fuzzy ID is designed.According to the Analysis of the fuzzy rules,control structure between inputs,including error,rate of change of error,and output of fuzzy ID is suggested;the conclusion that the two fuzzy control rules are similar is reached.Then the mathematical Analytical expression of Parameters between fuzzy controllers and linear gains coefficients KP,KI,KD of conventional PID controllers is got based on the structure analysis of fuzzy controllers,which shows that the PID fuzzy controller is a nonlinear PID controller in nature.The simulation research result shows that its control feature is better than that of the fuzzy PD and fuzzy PI.
出处
《控制工程》
CSCD
北大核心
2011年第4期623-626,共4页
Control Engineering of China
基金
国家自然科学重点基金(60634020)
