Stabilization and analytical tuning rule of double-loop control scheme for unstable dead-time process
|dc.identifier.citation||Ugon, B. and Nandong, J. and Zang, Z. 2017. Stabilization and analytical tuning rule of double-loop control scheme for unstable dead-time process, 29th Symposium of Malaysian Chemical Engineers (SOMChE) 2016.|
© Published under licence by IOP Publishing Ltd. The presence of unstable dead-time systems in process plants often leads to a daunting challenge in the design of standard PID controllers, which are not only intended to provide close-loop stability but also to give good performance-robustness overall. In this paper, we conduct stability analysis on a double-loop control scheme based on the Routh-Hurwitz stability criteria. We propose to use this unstable double-loop control scheme which employs two P/PID controllers to control first-order or second-order unstable dead-time processes typically found in process industries. Based on the Routh-Hurwitz stability necessary and sufficient criteria, we establish several stability regions which enclose within them the P/PID parameter values that guarantee close-loop stability of the double-loop control scheme. A systematic tuning rule is developed for the purpose of obtaining the optimal P/PID parameter values within the established regions. The effectiveness of the proposed tuning rule is demonstrated using several numerical examples and the result are compared with some well-established tuning methods reported in the literature.
|dc.title||Stabilization and analytical tuning rule of double-loop control scheme for unstable dead-time process|
|dcterms.source.title||IOP Conference Series: Materials Science and Engineering|
|dcterms.source.series||IOP Conference Series: Materials Science and Engineering|
|dcterms.source.conference||29th Symposium of Malaysian Chemical Engineers (SOMChE) 2016|
|curtin.accessStatus||Fulltext not available|
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