An Adaptive AC Servo System Based on Fuzzy Identifier

In this paper, a method of off-line identification based on fuzzy identifier used for AC servo system is proposed. In the design, the ways of using GA to optimize parameters of fuzzy identifier and using BP algorithm on-line to adjust last layer weight value of FNC are proposed respectively. A method to optimize parameters of menbership function of fuzzy controller using GA is demonstrated emphatically. The simulation results show the effectiveness of the scheme.