Design of The Stable Fuzzy Controller Using State Feedback Matrix

상태궤환행렬을 이용한 안정한 Fuzzy 제어기의 설계

  • Choi, Seung-Gyu (Dept. of Control and Instrumentation Eng. Kwangwoon Univ.) ;
  • Hong, Dae-Seung (Dept. of Control and Instrumentation Eng. Kwangwoon Univ.) ;
  • Ko, Jae-Ho (Dept. of Control and Instrumentation Eng. Kwangwoon Univ.) ;
  • Ryu, Chang-Wan (Dept. of Control and Instrumentation Eng. Kwangwoon Univ.) ;
  • Yim, Wha-Yeong (Dept. of Control and Instrumentation Eng. Kwangwoon Univ.)
  • 최승규 (광운대학교 제어계측공학과) ;
  • 홍대승 (광운대학교 제어계측공학과) ;
  • 고재호 (광운대학교 제어계측공학과) ;
  • 유창완 (광운대학교 제어계측공학과) ;
  • 임화영 (광운대학교 제어계측공학과)
  • Published : 1999.07.19

Abstract

Fuzzy Systems which are based on membership functions and rules, can control nonlinear, uncertain, complex systems well. However, Fuzzy logic controller(FLC) has problems; It is difficult to design the stable FLC and FLC depends mainly on individual experience. Although FLC can be designed using the error back-propagation algorithm, it takes long time to converge into global, optimal parameters. Well-developed linear system theory should not be replaced by FLC, but instead, it should be suitably used with FLC. A new methodology is introduced for designing THEN-PART membership functions of FLC based on its well-tuned state feedback controller. A example of inverted pendulum is given for demonstration of the robustness of proposed methodology.

Keywords