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Title: Robust on-line relay automatic tuning of PID control systems
Authors: Tan, K.K. 
Lee, T.H. 
Jiang, X. 
Issue Date: 2000
Citation: Tan, K.K.,Lee, T.H.,Jiang, X. (2000). Robust on-line relay automatic tuning of PID control systems. ISA Transactions 39 (2) : 219-232. ScholarBank@NUS Repository.
Abstract: In this paper, a robust on-line relay automatic tuning method for PID control systems is developed which expand on the application domain of Astrom's renowned relay autotuning method. In the proposed configuration, a relay is applied to an inner loop of a controller-stabilised process in the usual manner. Using the induced limit cycle oscillations from the closed-loop system, the controller settings may be re-tuned non-iteratively to achieve enhanced performance without disrupting closed-loop control. Two control tuning methodologies are developed - a direct and an indirect method based on an explicit process model. Simulation examples and a real-time experiment are provided to illustrate the practical appeal and potential advantages of the proposed method over the basic one. © 2000 Elsevier Science Ltd. All rights reserved.
Source Title: ISA Transactions
ISSN: 00190578
Appears in Collections:Staff Publications

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