摘要
在网络中,由于信息的碰撞、重发而产生的网络延迟对控制系统本身带来了负面影响。针对网络化控制系统(networkedcontrolsystem,NCS)的随机延时,在事件驱动的执行器结点设置计时器和接收缓存区,在线获得了延时数据,建立了NCS的数学模型。通过增广模型法和等同输入法构建了两种观测器,从而产生残差,对网络化系统的控制故障进行了诊断,并提供了仿真结果。
The negative effect of the network-induced delay that is generated from the information collision and resending is not be neglected. To deal with the random delay of NCS, a timer and a receiving buffer are set in the event-driven actuator. The delay data are gained on line. The mathematical model of NCS is set up. It makes use of z-transform to dispose delay, generates residual through parity relations, decouples disturbance by parameter design, diagnosis the control fault of the networked system, and provides the simulation result. Two observers are constructed by augment model method and parity input method. The residual is generated and the faults of NCS are diagnosed. The simulation result is given.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2005年第6期1069-1072,共4页
Systems Engineering and Electronics
基金
国家自然科学基金"网络化控制系统的故障诊断和容错控制"专题(60274014)
中国博士点研究基金"网络化控制系统的故障诊断和容错控制"(20020487006)
国家博士后研究基金"广义网络化控制系统的建模
分析和仿真研究"(2003034483)
智能制造技术教育部重点实验室开放基金(Imtsu 2002 03)资助课题
关键词
故障诊断
网络化控制系统
网络延时
观测器
fault diagnosis
networked control system
network-induced delay
observer
