Robust H-infinity control for uncertain state-delayed systems with sector non-linearity

This paper deals with the problem of robust H-infinity control for uncertai n state-delayed systems containing sector non-linearity. The parameter unce rtainties are assumed to be time varying and unknown but norm bounded. Base d on the linear matrix inequality (LMI) approach. both delay-independent an d delay-dependent techniques for designing memoryless state feedback contro llers are proposed to stabilize the delay system. and to reduce the effect of the disturbance input on the controlled output to a prescribed level for all admissible uncertainties. Numerical examples are employed to illustrat e the results.