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Research on Fuzzy Immune Self-Adaptive PID Algorithm Based on New Smith Predictor for Networked Control System

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  • Haitao Zhang
  • Jinbo Hu
  • Wenshao Bu

Abstract

We first analyze the effect of network-induced delay on the stability of networked control systems (NCSs). Then, aiming at stochastic characteristics of the time delay, we introduce a new Smith predictor to remove the exponential function with the time delay in the closed-loop characteristic equation of the NCS. Furthermore, we combine the fuzzy PID algorithm with the fuzzy immune control algorithm and present a fuzzy immune self-adaptive PID algorithm to compensate the influence of the model deviation of the controlled object. At last, a kind of fuzzy immune self-adaptive PID algorithm based on new Smith predictor is presented to apply to the NCS. The simulation research on a DC motor is given to show the effectiveness of the proposed algorithm.

Suggested Citation

  • Haitao Zhang & Jinbo Hu & Wenshao Bu, 2015. "Research on Fuzzy Immune Self-Adaptive PID Algorithm Based on New Smith Predictor for Networked Control System," Mathematical Problems in Engineering, Hindawi, vol. 2015, pages 1-6, January.
    • Handle: RePEc:hin:jnlmpe:343416
    DOI: 10.1155/2015/343416
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