Delay-dependent stability for neural networks with time-varying delay

In this paper, delay-dependent stability problem for neural networks with a time-varying delay is studied. The free-weighting matrix method is employed to derive an LMI-based criterion, in which the restriction of the derivative of a time-varying delay is removed. A delay-dependent and rate-independent stability criterion is derived as an easy corollary. Finally, the effectiveness of the presented stability criterion and its improvement over the existing results are demonstrated in numerical examples.