摘要
本文研究了具有不确定时延的网络控制系统的故障诊断问题,将一类具有不确定时延的网络控制系统等效为具有不确定性的离散线性系统,并构建了故障观测器对系统进行故障检测,运用Lyapunov稳定性理论和线性矩阵不等式(LMI)的方法,给出并证明了解存在的条件,仿真结果验证了该故障诊断方法的有效性。
The fault detection of networked control systems with uncertain time-delay is studied in this paper.Firstly the networked control system with uncertain time-delay is modeled as an uncertain discrete linear system.Then a state observer based approach to fault detection in system is developed.Finally based on the LMI approach,the existent condition of solution and the solution to the gain of observer are presented and proved.Simulation results show the effectiveness of the fault diagnosis algorithm.
出处
《哈尔滨职业技术学院学报》
2010年第2期127-129,共3页
Journal of Harbin Vocational & Technical College
关键词
网络控制系统
非线性系统
故障诊断
故障观测器
Networked control systems
nonlinear system
Fault diagnosis
Fault observer
