Abstract
This brief studies the stability issue of neural networks with respect to time-varying delay. First, an enhanced cubic functions negative-definiteness determination Lemma is proposed by using partitioning technique and Taylor’s formula. Compared with the previous results, this Lemma can eliminate the conservatism of constraint conditions by interval-decomposition method. Second, for the sake of the relaxed positive-definiteness determination, an asymmetric Lyapunov–Krasovskii functional is presented. Third, a resulting time-varying delay-dependent stability criterion is derived by making use of some inequality techniques. Finally, the advantage of the new approach are verified theoretically and numerically.
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