Stability robustness analysis for observer-based uncertain continuous-time time-delay systems containing saturating actuators

This paper investigates the problem of the stabilization of uncertain time-delay systems containing a saturating actuator. The Lyapunov-Krasovskii technique is employed to analyse the stability robustness for the uncertain closed-loop system which is based on a state observer. Some sufficient criteria addressing the robust stabilization of such systems are proposed. These conditions are shown to be less restrictive than those given by Han et al. (1998) and So et al. (1989).