Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/50998
Title: Online relay automatic tuning of multi-loop PI controllers
Authors: Tan, K.K. 
Lee, T.H. 
Ferdous, R.
Keywords: Autotuning
Cross-coupling
Decoupler
Interactions
Interactions autotuning
PI controller
Issue Date: 2003
Source: Tan, K.K.,Lee, T.H.,Ferdous, R. (2003). Online relay automatic tuning of multi-loop PI controllers. Intelligent Automation and Soft Computing 9 (3) : 155-167. ScholarBank@NUS Repository.
Abstract: In this paper, an approach for online relay automatic tuning of multi-loop PI controllers is described for multivariable processes. In the absence of significant inter-loop cross-coupling, only one closed-loop experiment may be necessary to tune the controllers to achieve specified closed-loop characteristics. When the inter-loop interaction is significant, multiple relay experiments can be conducted to derive a process model, based on which both the decoupler and the multi-loop controllers can be designed. Simulation examples (on two-inputs-two-outputs (TITO) processes) and a real-time experiment are provided to illustrate the practical appeal of the proposed method. The performance is compared to multi-loop control design based on the Biggest Log Modulus (BLT) method.
Source Title: Intelligent Automation and Soft Computing
URI: http://scholarbank.nus.edu.sg/handle/10635/50998
ISSN: 10798587
Appears in Collections:Staff Publications

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