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Closed-loop process identification under PI control: a time domain approach


Silva, R and Sbarbaro, D and Leon de la Barra, BA, Closed-loop process identification under PI control: a time domain approach, Industrial and Engineering Chemistry Research, 45, (13) pp. 4671-4678. ISSN 0888-5885 (2006) [Refereed Article]

DOI: doi:10.1021/ie051229w


Closed-loop identification plays an important role in improving existing underperforming closed-loop controllers, also enabling the identification of systems that, either by technical or economical reasons, cannot operate in open-loop fashion. A simple and noise-immune closed-loop identification approach based on step responses is presented. This method is entirely conceived in the time domain, and it is flexible enough to identify a set of simple low-order models that can be obtained from either reference or disturbance closed-loop step responses. This latter feature makes the proposed approach an ideal option as a building block of an adaptive controller. A comparative study considering other closed-loop identification methods available in the literature highlights the effectiveness of the new approach. Finally, a set of experimental examples demonstrates its ability to deal with real industrial processes.

Item Details

Item Type:Refereed Article
Research Division:Engineering
Research Group:Control engineering, mechatronics and robotics
Research Field:Field robotics
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in engineering
UTAS Author:Leon de la Barra, BA (Dr Bernardo Leon de la Barra)
ID Code:60906
Year Published:2006
Web of Science® Times Cited:10
Deposited By:Engineering
Deposited On:2010-02-22
Last Modified:2010-05-03

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