Journal of Systems Engineering and Electronics ›› 2011, Vol. 33 ›› Issue (9): 2066-2071.doi: 10.3969/j.issn.1001-506X.2011.09.28

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Predictive control compensation for time delay in networked control systems

FU Wei1, YANG Xian-yi1, FENG Wei1,2, LIU Guo-quan1
   

  1. 1. College of Automation, Chongqing University, Chongqing 400030, China
    2. Department of Computer Science, Chongqing Education College, Chongqing 400067, China
  • Online:2011-09-17 Published:2010-01-03

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Abstract:

A method is presented to compensate time delay in networked control system. The feedback time delay is calculated by using the time stamp in data packets. An algorithm based on predictive control theory is applied to compensating the delay. The forward time delay is compensated by an extra feedback loop. The compensation strategy is simple and has realtime performance. Simulation results show that time delay in networked control system can be accurately compensated and an excellent network performance is ensured by this strategy.

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