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›› 2013, Vol. 30 ›› Issue (2): 179-186.DOI: 10.7523/j.issn.1002-1175.2013.02.006

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Compensation for the stochastic delays in networked control systems

GE Yuan, CONG Shuang, SHANG Wei-Wei   

  1. Department of Automation, University of Science and Technology of China, Hefei 230027, China
  • Received:2012-02-01 Revised:2012-04-25 Online:2013-03-15
  • Supported by:

    Supported by the National Natural Science Foundation of China (61074050, 61203034, 50905172), and the Youth Talent Fund of Anhui Education Department (2012SQRL086ZD)

Abstract:

The discrete-time hidden Markov model is employed to model the probabilistic relation between the network states and the controller-to-actuator (C-A) delays in networked control systems (NCSs). The NCS is modeled as a Markovian jump linear system and the C-A delay in the current sampling period is predicted. By taking the prediction into account, a state-feedback controller is designed to compensate for the stochastic C-A delays. The superiority of the proposed method is demonstrated by the comparative simulation experiments.

Key words: networked control system, discrete-time hidden Markov model, Markovian jump linear system, state-feedback control

CLC Number: