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Title: Adaptive robust control of uncertain time delay systems
Authors: Zheng, F. 
Wang, Q.-G. 
Heng Lee, T. 
Keywords: Adaptive control
Linear matrix inequalities
River pollution control
Time delay systems
Uncertain systems
Issue Date: Aug-2005
Citation: Zheng, F., Wang, Q.-G., Heng Lee, T. (2005-08). Adaptive robust control of uncertain time delay systems. Automatica 41 (8) : 1375-1383. ScholarBank@NUS Repository.
Abstract: The problem of adaptive robust control for uncertain linear systems with multiple delays occurring in the state variables is studied in this paper. The essential requirement for the uncertainties is that they satisfy matching conditions and are norm-bounded, but the bounds of the uncertainties are not necessarily known. An adaptive controller is developed based on linear matrix inequality technique and it is shown that the controller can guarantee the state variables of the closed loop system to converge, globally, uniformly and exponentially, to a ball in the state space with any pre-specified convergence rate. The effectiveness of our approach has been verified by its application in the control of river pollution process for the purpose of preserving standards of water constituents in streams. © 2005 Elsevier Ltd. All rights reserved.
Source Title: Automatica
ISSN: 00051098
DOI: 10.1016/j.automatica.2005.03.014
Appears in Collections:Staff Publications

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