engleski

Stability analysis of fuzzy control system using describing function method

In the paper the procedure for the stability analysis of the class of nonlinear systems with the fuzzy controller is proposed. The stability analysis method described here uses describing function approach. If static characteristic of fuzzy controller, i.e. its describing function is known, it is possible to analytically analyze class of the nonlinear systems for which conditions of autoresonance and filter hypothesis are satisfied. The procedure for the determination of the fuzzy controller describing function is described and illustrated on the example. The stability analysis is explained and illustrated on the nonlinear mathematical model of the active power and frequency control for the isolated power system with the fuzzy controller.

terms-describing function; fuzzy controller

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