DESIGN OF FUZZY-LOGIC CONTROLLERS BASED ON GENERALIZED T-OPERATORS

Since Zadeh first proposed the basic principle of fuzzy logic controllers in 1968, the MIN and MAX operators have been popular in the design of fuzzy logic controllers. In this paper, the general concept of T-operators is introduced into the conventional design methods for fuzzy logic controllers so that a general and flexible methodology for the design of these fuzzy logic controllers is available. Then, by computer simulations, studies are made so as to determine the relations between the various T-operators and the performance of a fuzzy logic controller. It is concluded that the performance of the fuzzy logic controller for a given class of plants very much depends upon the choice of the T-operators.