Observer-based state feedback H-infinity control for networked control systems
Abstract
The observer-based H-infinity controller design problem is considered for the networked control systems with uncertain network-induced delays and packet dropouts. The system states are reconstructed by introducing an observer and an augmented system model with time-varying delays is established. Based on the delay-dependent Lyapunov stability theory, a sufficient condition is proposed to ensure that the closed-loop system is asymptotically stable with a guaranteed H-infinity performance level r. Since the obtained condition is nonlinear, the singular value decomposition method is applied to convert the nonlinear inequalities into LMIs. The delay-dependent approach shows a less conservative result than the delay-independent approach. A numerical example is given to demonstrate the high validity and merit of the proposed approach.
Keywords
Networked control systems; H-infinity control;Linear matrix inequality;Singular value decomposition; Delay-dependent
Full Text:
PDFDOI: http://doi.org/10.11591/ijeecs.v12.i8.pp6144-6152
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