Improved results on delay-dependent stability for neutral systems with mixed time-varying delays and nonlinear perturbations

This paper is concerned with the delay-dependent stability analysis of neutral systems with mixed time-varying delays and nonlinear perturbations. By proposing a new Lyapunov-Krasovskii (L-K) functional which contains some triple integral terms, combined with integral inequalities and free-weighting matrix technique, a neutral and discrete delay-dependent stability criterion is formulated in terms of linear matrix inequalities (LMIs). This criterion enlarges the upper bound of the time-delay and has less conservative. Numerical examples are given to demonstrate the effectiveness of the proposed stability criterion.