The Transactions of the Korean Institute of Electrical Engineers D (대한전기학회논문지:시스템및제어부문D)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Direct Adaptive Fuzzy Controller for Nonaffine Nonlinear System

비어파인 비선형 시스템에 대한 직접 적응 퍼지 제어기

  • 박장현 (목포대학교 신소재전기공학부) ;
  • 김성환 (목포대학교 신소재전기공학) ;
  • 박영환 (충주산업대 정보제어공학과)
  • Published : 2004.05.01
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Abstract

A direct adaptive state-feedback controller for highly nonlinear systems is proposed. This paper considers uncertain or ill-defined nonaffine nonlinear systems and employs a static fuzzy logic system (FLS). The employed FLS estimates. and adaptively cancels an unknown plant nonlinearity using its proved universal approximation property. A control law and adaptive laws for unknown fuzzy parameters and bounding constant are established so that the whole closed-loop system is stable in the sense of Lyapunov. The tracking error is guaranteed to be uniformly asymptotically stable rather than uniformly ultimately bounded with the aid of an additional robustifying control term. No a priori knowledge of an upper bound on an lumped uncertainty is required.

Keywords

References

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