Journal of the Korean Institute of Telematics and Electronics C (전자공학회논문지C)

The Institute of Electronics and Information Engineers (대한전자공학회)
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The prediction of self-excited oscillation of a fuzzy control system based on the describing function dynamic case

묘사함수를 이용한 퍼지 제어시스템의 자기진동 현상의 예측-동적 경우

  • Kim, Eun-Tai (Dept. of Electronic Engineering Yonsei University) ;
  • Noh, Heung-Sik (Dept. of Electronic Engineering Yonsei University) ;
  • Kwon, Chul (Dept. of Electronic Engineering Yonsei University) ;
  • Kim, Dong-Yon (Dept. of Electronic Engineering Ansung National University) ;
  • Park, Mig-Non (Dept. of Electronic Engineering Yonsei University)
  • 김은태 (연세대학교 전자공학과) ;
  • 노흥식 (연세대학교 전자공학과) ;
  • 권철 (연세대학교 전자공학과) ;
  • 김동연 (안성산업대학교 전자공학과) ;
  • 박민용 (연세대학교 전자공학과)
  • Published : 1998.05.01
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Abstract

This paper deals with the self-excited oscillation of a system that is controlled by a dynamic nonlinear fuzzy controller. The self-excited oscillation can be observed in the systems composed of nonlinear elements and its analysis is as important as that of stability in the design of nonlinear systems. by using the frequency transfer function analysis known as the describing function method in nonlinear control theory, the oscillation is theoretically predicted. First, the describing function of a dynamic fuzzy controller is derived and then, based on the derived describing fuction, self-excited oscillation of the system controlled by a dynamic fuzzy controller is predicted. To obtain the describing function of the dynamic fuzzy controller, a simple structure is assumed for the fuzzy controller.

Keywords