This paper studies local exponential synchronization of complex delayed networks with switching topology via switched system stability theory. First, by a common unitary matrix, the problem of synchronization is trans...This paper studies local exponential synchronization of complex delayed networks with switching topology via switched system stability theory. First, by a common unitary matrix, the problem of synchronization is transformed into the stability analysis of some linear switched delay systems. Then, when all subnetworks are synchronizable, a delay-dependent sufficient condition is given in terms of linear matrix inequalities （LMIs） which guarantees the solvability of the synchronization problem under an average dwell time scheme. We extend this result to the case that not all subnetworks are synchronizable. It is shown that in addition to average dwell time, if the ratio of the total activation time of synchronizable and non-synchronizable subnetworks satisfy an extra condition, then the problem is also solvable. Two numerical examples of delayed dynamical networks with switching topology are given, which demonstrate the effectiveness of obtained results.展开更多
针对DoS(Denial-of-Service)攻击,分析了具有短时延的网络控制系统(networked control systems,NCS)的稳定性,设计了该系统的保性能控制器.首先,通过采样周期的重新定义,把该类NCS建模成离散切换系统模型,该模型可以把短时延和DoS攻击...针对DoS(Denial-of-Service)攻击,分析了具有短时延的网络控制系统(networked control systems,NCS)的稳定性,设计了该系统的保性能控制器.首先,通过采样周期的重新定义,把该类NCS建模成离散切换系统模型,该模型可以把短时延和DoS攻击统一起来.接着,用离散切换系统的分析方法,给出了一个该类NCS指数稳定的充分条件.进一步,在给定的保性能水平下,设计了相应的保性能控制器.最后,通过一个仿真示例说明了结果的有效性.展开更多
基金the National Natural Science Foundation of China (No.60874024, 60574013).
文摘This paper studies local exponential synchronization of complex delayed networks with switching topology via switched system stability theory. First, by a common unitary matrix, the problem of synchronization is transformed into the stability analysis of some linear switched delay systems. Then, when all subnetworks are synchronizable, a delay-dependent sufficient condition is given in terms of linear matrix inequalities （LMIs） which guarantees the solvability of the synchronization problem under an average dwell time scheme. We extend this result to the case that not all subnetworks are synchronizable. It is shown that in addition to average dwell time, if the ratio of the total activation time of synchronizable and non-synchronizable subnetworks satisfy an extra condition, then the problem is also solvable. Two numerical examples of delayed dynamical networks with switching topology are given, which demonstrate the effectiveness of obtained results.
文摘针对DoS(Denial-of-Service)攻击,分析了具有短时延的网络控制系统(networked control systems,NCS)的稳定性,设计了该系统的保性能控制器.首先,通过采样周期的重新定义,把该类NCS建模成离散切换系统模型,该模型可以把短时延和DoS攻击统一起来.接着,用离散切换系统的分析方法,给出了一个该类NCS指数稳定的充分条件.进一步,在给定的保性能水平下,设计了相应的保性能控制器.最后,通过一个仿真示例说明了结果的有效性.
