Journal of Institute of Control, Robotics and Systems (제어로봇시스템학회논문지)

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Compensator Design for Linear System with Random Delay

불규칙한 시간지연이 존재하는 선형시스템의 제어기 설계

  • 김선중 (한양대학교 전자전기제어계측공학과) ;
  • 송택렬 (한양대학교 전자컴퓨터공학부)
  • Published : 2004.07.01
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Abstract

Modem control systems often use a communication network to send measurement and control signals between nodes. Communication delays can be time varying. The length of the time delays is often hard to predict and modeled as being random. This paper proposes a combined controller used to compensate network time delay by estimating the delay with the interacting multiple model (IMM). The network delay is modeled as a Markov chain and 3 modes representing heavy, medium, and low network loads are used in the IMM. The proposed method is applied to an optimal control system with double integrators and the results are compared with the existing control methods.

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References

  1. R. Luck and A. Ray, 'An Observer-based Compensator for Distributed Delays', Automatica, 26:5, pp. 903-908, 1990 https://doi.org/10.1016/0005-1098(90)90007-5
  2. J.Nilsson, B. Bernhardsson, B. Wittenmark, 'Stochastic Analysis and Control of Real-time Systems with Rand Delays', Proceedings of the 13th International Federation of Automatic Control World Congress, San Francisco, pages 267-272, 1996
  3. J. Nilsson, 'Analysis and Design of Real-Time System with Random Delays', Lic Tech Thesis, Department of Automatic Control, Lund Institute of Technology, Lund, Sweden., 1996
  4. K. J. Astrom, B. Wittenmark, Computer Controlled Systems-Theory and Design - second edition,Prentice-Hall, 1990
  5. J. Nilsson, B. bernhardsson, 'Analysis of Real-Time Control Systems with Time Delays', Proceedings of the 35th Conference in Decision and Control Kobe, Japan, 1996
  6. H. Blom, Y. Bar-Shalom, 'The Interacting Multiple Model Algorithm for Systems with Markovian Switching Coefficient', IEEE Trans. on Automatic Control ,AC-33, pp780-783, 1988 https://doi.org/10.1109/9.1299