Design of centralized robust pi controller for a multivariable process

Vinayambika S. Bhat, I. Thirunavukkarasu, S. Shanmuga Priya

Research output: Contribution to journalArticle

Abstract

A simple robust control technique based on centralized Proportional Integral is proposed for a multivariable process. The study is undertaken to improve the performance of the multivariable system in presence of plant model mismatch. The method considers Steady State Gain Matrix and process parameters like time delay and time constant for the controller design. The robustness of the proposed technique is analysed with perturbation in all the three parameters namely process gain, time constant, and time delay. The servo and load disturbance rejection response is obtained. Also, the multiplicative uncertainty is checked with spectral radius criterion. The Integral Absolute Error values of main effect, interaction effect, and uncertainty in process parameters are also compared with the centralized controller designed based on Steady State Gain Matrix. The tuning parameters for the original plant and perturbed plant is kept constant throughout the analysis. Finally, the proposed control algorithm is validated using pilot plant binary distillation column.

Original languageEnglish
Pages (from-to)1253-1273
Number of pages21
JournalJournal of Engineering Science and Technology
Volume13
Issue number5
Publication statusPublished - 01-05-2018

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Time delay
Controllers
Multivariable systems
Disturbance rejection
Distillation columns
Robust control
Pilot plants
Robustness (control systems)
Tuning
Uncertainty

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Bhat, Vinayambika S. ; Thirunavukkarasu, I. ; Priya, S. Shanmuga. / Design of centralized robust pi controller for a multivariable process. In: Journal of Engineering Science and Technology. 2018 ; Vol. 13, No. 5. pp. 1253-1273.
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Design of centralized robust pi controller for a multivariable process. / Bhat, Vinayambika S.; Thirunavukkarasu, I.; Priya, S. Shanmuga.

In: Journal of Engineering Science and Technology, Vol. 13, No. 5, 01.05.2018, p. 1253-1273.

Research output: Contribution to journalArticle

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