基于事件驱动通信的离散时间网络化系统的协同设计

The co-design of discrete-time networked system based on event-triggered communication

以含多个子系统的耦合离散时间线性系统为研究对象,研究了网络资源受限条件下的控制与通信协同设计问题.针对网络资源有限的问题,提出了一种新的事件驱动通信机制,进行控制参数与通信参数的协同设计.在新提出的事件驱动通信机制中,引入非线性项以降低通信系统的业务量,且能够保证离散时间系统的最终一致有界性.首先,建立事件驱动通信机制下的离散时间系统模型;其次,采用Young不等式理论和李雅普诺夫稳定性理论分析离散时间系统的状态是有界的,进而完成事件驱动通信条件与控制器增益的协同设计;最后,通过仿真验证所提方法的有效性.

The co-design problem under the condition that network resources are limited is studied for networked systems which include multiple coupled discrete time linear subsystems.A new event-triggered communication mechanism is proposed for the limitation of network resources.In the new event-triggered communication mechanism,a nonlinear term is introduced to reduce the traffic of communication systems and to make the system uniform ultimate bounded.Firstly,a model of discrete-time systems is built based on the event-triggered communication mechanism.Secondly,employing Young inequality and Lyapunov theory,the conclusion that the states of discrete time systems are bounded is analyzed.Then,the co-design of event-triggered communication condition and controller gain is accomplished.Finally,theeffectiveness of event-triggered control method is demonstrated by simulation results.