Centralized control with decoupling approach for large scale multivariable processes

Khandelwal, Shubham and Aldhandi, Suresh and Detroja, Ketan P (2019) Centralized control with decoupling approach for large scale multivariable processes. In: IEEE Region 10 Conference (TENCON), 17-20 October 2019, Kochi, India.

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A centralized PI control design methodology with easy applicability to small as well as large scale MIMO processes is proposed in this manuscript. The gain and phase margin tuning rule is deployed here to design the diagonal (D) PI controllers for the simple effective transfer function models (approximated for effective open-loop transfer functions). While accounting for the input-output coupling, the D controllers ensure robustness in the design along with good set-point tracking performance. The off-diagonal (OD) controllers in the centralized PI control framework are designed using the D PI controllers and the process steady-state gain. The OD controller design is carried out with an objective of minimizing the interaction effects. The performance of the proposed method is verified by simulation studies on various benchmark multivariable systems. Further, the robustness of the proposed method to uncertainties in the plant model is evaluated by performing closed-loop simulations subject to a plant-model mismatch of ±30%.

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IITH Creators:
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Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Multivariable , centralized control, decoupling, effective transfer function, gain margin, phase margin
Subjects: Electrical Engineering
Divisions: Department of Electrical Engineering
Depositing User: Team Library
Date Deposited: 31 Dec 2019 10:49
Last Modified: 31 Dec 2019 10:49
URI: http://raiith.iith.ac.in/id/eprint/7287
Publisher URL: http://doi.org/10.1109/TENCON.2019.8929297
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