Series Info:IEE Proceedings: Control Theory and Applications 147
Type:Article
Keywords:Discrete time control systems
,
Linear control systems
,
Riccati equations
,
Robustness (control systems)
,
State estimation
,
Uncertain systems
,
Discrete state delay systems
,
Kalman filtering
Abstract:
A robust estimator design methodology has been developed for a class of linear uncertain discrete-time systems. It extends the Kalman filter to the case in which the underlying system is subject to norm-bounded uncertainties and constant state delay. A linear state estimator is constructed via a systematic procedure such that the estimation error covariance is guaranteed to lie within a certain bound for all admissible uncertainties. The solution is given in terms of two Riccati equations involving scaling parameters. A numerical example is provided to illustrate the theory.
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