DocumentCode :
2590641
Title :
An alternative EPSAC based control strategy for multivariable time delay processes
Author :
Pop, Cristina Ioana ; Ionescu, Clara M. ; De Keyser, Robin ; Dulf, Eva Henrietta ; Valean, Honoriu ; Neaga, Adrian ; Darab, Cosmin
Author_Institution :
Dept. of Autom. Control, Tech. Univ. of Cluj-Napoca, Cluj-Napoca, Romania
fYear :
2012
fDate :
24-27 May 2012
Firstpage :
150
Lastpage :
155
Abstract :
Multivariable time delay processes are difficult to control due to the input-output interactions, as well as multiple time delays that complicate the controller design process. The proposed method presented in this paper consists of a dynamic decoupling strategy - compared to the more general used steady state decoupling techniques - and a delay time compensation (DTC) structure in which the controller is designed based on the Extended Prediction Self Adaptive Control (EPSAC) approach. The main concern regarding the proposed method is directed towards the possible lack of robustness against time delay variations - a problem that is frequently encountered in DTC structures. Moreover, the decoupling technique implemented consists in adding supplementary time delay to some input channels of the MIMO process, which may result in a worsening of the robustness problems. The simulations presented show that the proposed method can ensure robust stability and robust performance even for significant time delay variations.
Keywords :
MIMO systems; adaptive control; control system synthesis; delays; multivariable control systems; predictive control; robust control; DTC structure; EPSAC-based control strategy; MIMO process; controller design process; delay time compensation structure; dynamic decoupling strategy; extended prediction self-adaptive control; input-output interactions; multivariable time delay process; robust performance; robust stability; time delay variations; Carbon; Delay; Delay effects; Isotopes; MIMO; Process control; Robustness; decoupling; delay time compensation; multivariable systems; predictive control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Automation Quality and Testing Robotics (AQTR), 2012 IEEE International Conference on
Conference_Location :
Cluj-Napoca
Print_ISBN :
978-1-4673-0701-7
Type :
conf
DOI :
10.1109/AQTR.2012.6237692
Filename :
6237692
Link To Document :
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