Design of Multi-loop PID Controllers Based on the Generalized IMC-PID Method with Mp Criterion

  • Vu Truong Nguyen Luan (School of Chemical Engineering and Technology, Yeungnam University) ;
  • Lee Jie-Tae (Department of Chemical Engineering, Kyungpook National University) ;
  • Lee Moon-Yong (School of Chemical Engineering and Technology, Yeungnam University)
  • Published : 2007.04.30

Abstract

A new method of designing multi-loop PID controllers is presented in this paper. By using the generalized IMC-PID method for multi-loop systems, the optimization problem involved in finding the PID parameters is efficiently simplified to find the optimum closed-loop time constant in a reduced search space. A weighted sum Mp criterion is proposed as a performance cost function to cope with both the performance and robustness of a multi-loop control system. Several illustrative examples are included to demonstrate the improved performance of the multi-loop PID controllers obtained by the proposed design method.

Keywords

References

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