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Stabilizing Parametric Region of Multiloop PID Controllers for Multivariable Systems Based on Equivalent Transfer Function

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  • Xiaoli Luan
  • Qiang Chen
  • Pedro Albertos
  • Fei Liu

Abstract

The aim of this paper is to determine the stabilizing PID parametric region for multivariable systems. Firstly, a general equivalent transfer function parameterization method is proposed to construct the multiloop equivalent process for multivariable systems. Then, based on the equivalent single loops, a model-based method is presented to derive the stabilizing PID parametric region by using the generalized Hermite-Biehler theorem. By sweeping over the entire ranges of feasible proportional gains and determining the stabilizing regions in the space of integral and derivative gains, the complete set of stabilizing PID controllers can be determined. The robustness of the design procedure against the approximation in getting the SISO plants is analyzed. Finally, simulation of a practical model is carried out to illustrate the effectiveness of the proposed technique.

Suggested Citation

  • Xiaoli Luan & Qiang Chen & Pedro Albertos & Fei Liu, 2016. "Stabilizing Parametric Region of Multiloop PID Controllers for Multivariable Systems Based on Equivalent Transfer Function," Mathematical Problems in Engineering, Hindawi, vol. 2016, pages 1-7, May.
    • Handle: RePEc:hin:jnlmpe:3173289
    DOI: 10.1155/2016/3173289
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