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Dynamic optimization for controller tuning with embedded safety and response quality measures

Ahamad, Intan Salwani and Choong, Thomas Shean Yaw and Yunus, Robiah and Chuah, Teong Guan and Vassiliadis, Vassilis S. (2011) Dynamic optimization for controller tuning with embedded safety and response quality measures. Pertanika Journal of Science & Technology, 19 (2). pp. 397-414. ISSN 0128-7680; ESSN: 2231-8526

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Official URL: http://www.pertanika.upm.edu.my/Pertanika%20PAPERS...

Abstract

Controller tuning is needed to select the optimum response for the controlled process. This work presents a new tuning procedure of PID controllers with safety and response quality measures on a non-linear process model by optimization procedure, with a demonstration of two tanks in series. The model was developed to include safety constraints in the form of path constraints. The model was then solved with a new optimization solver, NLPOPT1, which uses a primal-dual interior point method with a novel non-monotone line search procedure with discretized penalty parameters. This procedure generated a grid of optimal PID tuning parameters for various switching of steady-states to be used as a predictor of PID tunings for arbitrary transitions. The interpolation of tuning parameters between the available parameters was found to be capable to produce state profiles with no violation on the safety measures, while maintaining the quality of the solution with the final set points targeted achievable.

Item Type:Article
Keyword:Non-linear programming; Optimal PID tuning parameters; Path constraints; PID controller tuning; Primal-dual interior point method
Faculty or Institute:Faculty of Engineering
Publisher:Universiti Putra Malaysia Press
ID Code:32793
Deposited By: Nabilah Mustapa
Deposited On:26 Jan 2016 11:18
Last Modified:26 Jan 2016 11:18

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