一类输出耦合时延复杂动态网络故障诊断研究

摘要

文章针对一类输出耦合时延复杂动态网络模型,考虑节点动力学参数未知的情况,基于网络外部同步思想,提出一种对该类复杂动态网络进行故障诊断的方法.利用节点的输出变量作为反馈变量设计控制器,根据Lyapunov稳定性理论,推导网络达到外部同步的条件.该方法可以实时监控时延网络拓扑结构的变化情况,对网络进行故障诊断.通过仿真验证本文方法的有效性.%Fault diagnosis is a challenging issue in complex dynamical networks.In the real-world complex dynamical networks,there exists much uncertain information,such as unknown topological structure and uncertain node parameters.Based on network outer synchronization,an approach to fault diagnosis is proposed for a class of output-coupling time delay complex dynamical networks with unknown node parameters.Output variables are used to construct the controllers.A few conditions satisfying outer synchronization are specified from Lyapunov stability theorem.The proposed approach can be used to monitor the online evolution of time-delay network topological structure.Numerical simulations are given to verify the effectiveness of the proposed approach.