具有动态出链路的复杂动态网络节点滑模跟踪控制

Sliding-mode tracking control for nodes in complex dynamic networks with dynamic outgoing links

复杂动态网络可视为由多个子系统(抽象为节点)组成的大系统,节点之间通过链路关系相互耦合,因而时变链路关系会对节点的动态行为产生影响。为此考虑具有时变链路的复杂动态网络,将网络链路关系视为动态系统,在链路与节点间的动态耦合关系的辅助作用下,采用滑模变结构方法设计节点控制器,实现节点的渐近跟踪控制。然后通过一个实例仿真验证了所提控制策略的有效性。与几种现有方法相比,本文方法的优势是在节点子系统中考虑了未知的外部干扰与系统不确定性,并通过构造链路系统的辅助参考跟踪目标,助力节点控制器完成跟踪控制任务。

Complex dynamic networks can be regarded as a large system composed of multiple subsystems(i.e.,nodes),and the nodes are coupled with each other through the link relationship,so the time-varying link relationship will affect the dynamic behavior of the nodes.In this paper,a complex dynamic network with time-varying links was studied,and its network link relationships were consi-dered as dynamic systems.With the assistance of dynamic coupling relationships between links and nodes,a controller was designed by using sliding-mode variable structure method to achieve asympto-tic tracking control of nodes in the network.Then the effectiveness of the proposed control strategy was verified by a simulation case.Compared with several existing methods,this method has the advantages that unknown external disturbance and system uncertainty are taken into account in the node subsystems,and the auxiliary reference tracking target of the link system is constructed to help the node controller complete the tracking task.