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针对网络带宽的限制,在网络控制系统中需要采用多包传输.为了避免这些网络包发生时序错乱,每次只传输控制对象测量值分出的多个数据包中的一个,从而将这类网络控制系统建模为异步动态系统.多包传输网络控制系统中同样存在大的网络延时,这必将影响系统的控制性能,甚至使系统失稳.为了保证这类系统的稳定性,借助异步动态系统的Lyapunov稳定理论,给出了多包传输长时延网络控制系统的Lyapunov稳定条件.仿真实验结果表明了该方法的有效性.
In order to limit the network bandwidth, multi-packet transmission is required in the network control system.In order to avoid timing disorder of these network packets, only one of multiple data packets separated by the control object measurement value is transmitted at a time, The control system is modeled as an asynchronous dynamic system.Multi-packet transmission network control system also has a large network delay, which will affect the control performance of the system and even destabilize the system.In order to ensure the stability of such systems, The Lyapunov stability theory of dynamic system is given, and the Lyapunov stability condition of multi-packet transmission long-delay networked control system is given. Simulation results show the effectiveness of the proposed method.