The problem of parametric uncertaintiy and external disturbance robust H∞ control of linear singular systems with time delay is discussed.Parametric uncertainty is assumed to be norm bounded.The considered systems are not assumed to be regular and impulse-free beforehand.By using linear matrix inequality method

Delay-dependent sufficient conditions were obtained so that the closed-loop system was not only regular

impulse-free and stable

but it also satisfied a prescribed H∞ performance condition...