ELIMINATING STEAD-STATE ERROR OF FUZZY CONTROLLER WITH THE SUCCESSIVE APPROXIMATION OF UNIVERSE OF DISCOURSE

In this paper, a new method to eliminate the stead-state error of fuzzy controller by the suc-cessive approximation of universe of discourse is presented. The method can tune the controlled processes inaccordance with the fuzzy control rules from beginning to end, and there exits no integrating saturation. Thesimulation and application prove that the method presented in this paper is superior to the cut-PI method.