Simplified Design Method of Fuzzy Servo Systems for Nonlinear Plants.

Fuzzy control has been applied to many kinds of real industrial processes. In the design of complex systems such as multi-input/multi-output systems and nonlinear systems, it is difficult to acquire expert control knowledge and to determine optimal parameters of membership functions. This paper presents a simplified design method for fuzzy servo systems for nonlinear plants. The features of this method are as follows. (1) This method consists of a simple design procedure. (2) This method guarantees stability of fuzzy servo systems. (3) This method results in the rejection of steady-state error and disturbance. Finally, the effectiveness of this design method is verified by a simulation experiment of control of the water level of a multi tank system.