Series Info:Computers and Electrical Engineering 29
Type:Article
Keywords:Observer-based controller
,
Robust
,
Time-lag systems
,
Uncertain
,
Computer simulation
,
Linear control systems
,
Robustness (control systems)
,
System stability
,
Time lag systems
,
Uncertain systems
Abstract:
This paper investigates the design of robust observer-based controllers for a class of uncertain linear time-lag systems. The uncertainties are assumed to be norm-bounded. We extend the previous results on quadratic-cost control to the case of observer-based control for uncertain systems with unknown state and input time-lags. By introducing an appropriate definition of quadratic stability for uncertain time-lag systems, it is shown that observer-based controllers can be constructed via solutions of linear-matrix inequalities. A simulation example is given to illustrate the theoretical developments. 2002 Elsevier Science Ltd. All rights reserved.
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