Abstract: This paper deals with the controller design of a multi-packet transmission networked control system with short time-delay and transmitted data dropout in static scheduling policy and in dynamic scheduling policy.The sensor failing to transmit data are treated to be invalidated temporarily and the networked control system is modeled as a system with time-varying sensors’ fault.The observer system is modeled as models of linear switched control systems under certain switching sequences whereas in static scheduling policy and the sufficient conditions for the asymptotic stability criterion are obtained with the theory of the fault-tolerant and periodical system and the observer system is modeled as a switched system with finite subsystems whereas in dynamic scheduling policy and the stability condition of the system is given with the theory of the fault-tolerant and switched system.And by using of the cooperative design approach of the controller and observer，the designs for fault-tolerant the control law and the state observer are presented.Numerical simulation examples demonstrate the conclusions are feasible and effective.

Key words: networked control systems, fault-tolerant control, multi-packet transmission, short time-delay

摘要： 研究了存在数据丢失的短时延多包传输网络控制系统在静态调度和动态调度下的控制器设计问题。把未能成功传输数据的传感器节点视为暂时失效，将网络控制系统建模为一类具有时变传感器“故障”的系统。在静态调度策略下，将系统建模为一类具有一定切换规则的周期系统，利用容错控制理论和周期系统理论得到系统稳定性判据；在动态调度策略下，将系统建模为一类具有有限子系统的自主切换系统，利用容错控制理论和切换系统理论给出了系统的稳定性条件。并利用控制器和观测器的协同设计方法给出了系统在静态调度和动态调度下的容错控制律和状态观测器设计方法。数值仿真算例证明了结论的可行性和有效性。

关键词: 网络控制系统, 容错控制, 多包传输, 短时延