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Design of fuzzy PID controllers using modified triangular membership functions. (English) Zbl 1139.93327

Summary: A design method for fuzzy Proportional-Integral-Derivative (PID) controllers is investigated in this study. Based on conventional triangular membership functions used in fuzzy inference systems, the modified triangular membership functions are proposed to improve a system’s performance according to knowledge-based reasonings. The parameters of the considered controllers are tuned by means of genetic algorithms using a fitness function associated with the system’s performance indices. The merits of the proposed controllers are illustrated by considering a model of the induction motor control system and a higher-order numerical model.

MSC:

93C42 Fuzzy control/observation systems
90C59 Approximation methods and heuristics in mathematical programming
93C95 Application models in control theory
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