Robust d‐stability analysis of linear uncertain discrete time‐delay systems

Abstract

Abstract In this work, under assumption that all the eigenvalues of the linear nominal discrete time‐delay system lie within a specified circular region, a sufficient condition is proposed to preserve the assumed property when the structured parameter perturbations are added into the linear nominal discrete time‐delay system. By mathematical analysis, the presented criterion is proved to be less conservative than the existing one reported in the literature.