Variable structure robust control of uncertain time-delay systems

This paper introduces a variable structure output feedback robust control for uncertain time-delay systems. New types of switching manifolds with integral terms are implemented to consider larger class of linear systems by overcoming both the observability constraints of the reduced order system and the Kimura-Davison condition. Two types of control laws are introduced by which an estimate of a region of asymptotic stability to the origin and a region of attraction to the switching manifold are defined. (C) 1998 by Elsevier Science Ltd. All rights reserved.