전기학회논문지 (The Transactions of The Korean Institute of Electrical Engineers)

  • 제61권9호
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  • Pages.1319-1329
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  • 2012
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  • 1975-8359(pISSN)
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  • 2287-4364(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
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완전 궤환 비선형 계통에 대한 자기 구조화 퍼지 시스템을 이용한 상태변수 및 출력 궤환 적응 제어기

State- and Output-feedback Adaptive Controller for Pure-feedback Nonlinear Systems using Self-structuring Fuzzy System

  • 박장현 (목포대 공대 제어로봇공학과) ;
  • 김성환 (목포대 공대 제어로봇공학과) ;
  • 장영학 (목포대 공대 제어로봇공학과) ;
  • 유영재 (목포대 공대 제어로봇공학과)
  • 투고 : 2012.02.10
  • 심사 : 2012.08.09
  • 발행 : 2012.09.01
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초록

Globally stabilizing adaptive fuzzy state- and output-feedback controllers for the fully nonaffine pure-feedback nonlinear system are proposed in this paper. By reformulating the original pure-feedback system to a standard normal form with respect to newly defined state variables, the proposed controllers require no backstepping design procedures. Avoiding backstepping makes the controller structure and stability analysis to be considerably simplified. For the global stabilty of the clossed-loop system, the self-structuring fuzzy system whose memebership functions and fuzzy rules are automatically generated and tuned is adopted. The proposed controllers employ only one fuzzy logic system to approximate unknown nonlinear function, which highlights the simplicity of the proposed adaptive fuzzy controller. Moreover, the output-feedback controller of the considered system proposed in this paper have not been dealt with in any literature yet.

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참고문헌

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