本文研究了一类带有时变时滞的非线性中立系统时滞依赖的稳定性条件,系统模型为:x(t)-Cx(t-h(t))=Ax(t)+Bx(t—τ(t))+F(x(t),t)+G(x(t—τ(t)),t)。在本文中,时变时滞假定属于一个区间τm≤τ(t)≤τM。目的是对于所容许的不确定性和时滞得到一个新的具有更低保守性的能够使系统达到渐近稳定的充分条件。在本文中有效地利用了时变时滞的变化区间的上下界这一信息,并且利用了牛顿一莱布尼茨公式,构造了新的Lyapunov泛函,基于S-Procedure引理得到了新的判别带有非线性不确定性中立系统渐近稳定的充分条件:∑〈0。最后通过数值算例来验证了此方法的可行性以及更低的保守性。
This paper investigates the stability condition in a class of uncertain neutral systems with interval time-varying delays and nonlinear uncertainties. In this paper, the time-varying delays are assumed to belong to an interval :τm ≤ τ(t) ≤τM. The purpose is to derive a new delay-dependent stability condition with much less conservative in the neutral system, irrespective of the uncertainties and the time delays. Based on both the lower and upper bounds of time-varying delay interval, in the choice of the approriate Lyapunov function, used the transform of Leibnitz-Newton formula, a new delay-dependent stability condition of nonlinear neutral systems with time-varying delays is derived which is based on S-prosedure :∑ 〈 0. Finally, numerical examples show the effectiveness of our results and much less conservative.