Fuzzy Control of VSS Type and Its Robustness(Journal of Japan Society for Fuzzy Theory and Systems)

概要

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Fuzzy control law are described as If-Then-form. It is considered that these control law divide the state space and are selected according to the divided areas. Therefore the fuzzy control sytem is regarded as Variable Structure System (VSS). So we treat the fuzzy controller as a kind of VSS controller, and utilize the advantages of VSS controller on designing of fuzzy controller. In this paper, a method of designing fuzzy controller to guarantee the stability of the system is proposed based on the VSS. First, the basic idea of sliding mode controller is summarized, and a fuzzy controller which is identical to the sliding mode controller is presented. Second, a determination method of rules satisfying the specifications is proposed according to the semi-positive definite function. Finally the robustness of fuzzy control system is examined from the point of the manipulated variables. As a result, in the sense of robustness of VSS Controller, detailed division of the state space is required.
日本知能情報ファジィ学会の論文
1992-12-15