A fuzzy-sliding mode controller design

A fuzzy-sliding mode controller (FSMC) which has the characteristics of both fuzzy logic controller (FLC) and variable structure controller (VSC) is proposed. The FSMC has a fuzzy-sliding motion similar to the conventional sliding motion of the VSC. The distinction between them is that the switching hyperplane is a fuzzy set in the FSMC and is a crisp set in the VSC. By composing the advantages of both FLC and VSC, one can easily determine the membership functions and fuzzy rules and prespecify the behavior of control system.<>