Journal of the Korean Institute of Intelligent Systems (한국지능시스템학회논문지)

Korean Institute of Intelligent Systems (한국지능시스템학회)
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Observer-based Intelligent Control of Nonlinear Networked Control Systems with Packet Loss for Wireless Sensor Network

무선 센서 네트워크를 위한 패킷 손실을 포함한 비선형 네트워크 제어 시스템의 관측기 기반 지능 제어기 설계

  • 나인호 (군산대학교 전자정보공학부) ;
  • 김세진 (군산대학교 전자정보공학부) ;
  • 주영훈 (군산대학교 전자정보공학부)
  • Published : 2009.04.25
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Abstract

In this paper, an observer-based intelligent controller for the nonlinear networked control systems with packet loss is proposed for wireless sensor network. For the intelligent control of the nonlinear system, it uses the fuzzy system with Takagi-Sugeno (T-S) fuzzy model. The observer is designed for the fuzzy networked control system, and the output feedback controller is proposed for the stability of estimates and errors. The stability condition of the closed-loop system with the proposed controller is represented to the linear matrix inequality (LMI) form, and the observer and control gain are obtained by LMI. An example is given to show the verification discussed throughout the paper.

본 논문은 무선 센서 네트워크를 위한 패킷 손실을 포함하는 비선형 네트워크 제어 시스템의 관측기 기반 지능 제어기를 제시한다. 비선형 시스템의 지능 제어를 위해 Takagi-Sugeno (T-S) 퍼지 모델링 기법을 이용하고, 이를 통하여 비선형 네트워크 제어 시스템을 퍼지 모델로 표현한다. 퍼지 모델로 표현된 네트워크 제어 시스템에 대하여 퍼지 관측기를 설계하고, 관측기의 측정치와 실제 시스템의 상태변수 간의 오차를 안정화 시킬 수 있는 출력 궤환 제어기를 설계한다. 제안된 제어기를 포함한 폐루프 시스템의 안정도 조건을 선형 행렬 부등식으로 나타내고, 부등식을 이용하여 제어기의 이득값을 구한다. 모의실험을 통하여 제어기의 효용성을 평가한다.

Keywords

References

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