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Modified Smith Predictor Based on and Predictive PI Control Strategy

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  • Shiqing Sang
  • Pengcheng Nie

Abstract

In this paper, a new type of modified Smith predictor based on the and predictive PI control strategy is proposed. The modified Smith predictor not only has robust performance but also has a similar predictive PI control structure. By introducing a time delay term, the modified Smith predictor controller overcomes the shortcoming that the conventional control algorithm can only use the low-order approximation of time delay term to design the control algorithm. The modified Smith predictor controller’s output is related to the current system error and related to the output in a period before the controller. Simultaneously, the modified Smith predictor controller is applied to conventional process systems based on dynamic optimization estimation in the case study to show absolute superiority over the nonpredictive control method (such as the classical PID control method).

Suggested Citation

  • Shiqing Sang & Pengcheng Nie, 2021. "Modified Smith Predictor Based on and Predictive PI Control Strategy," Mathematical Problems in Engineering, Hindawi, vol. 2021, pages 1-17, August.
    • Handle: RePEc:hin:jnlmpe:7228637
    DOI: 10.1155/2021/7228637
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