具有固定拓扑结构的无线网络控制系统故障检测  

Fault detection for wireless networked control systems with fixed topology

作　　者：林锡川[1] 别志松[2] 

机构地区：[1]河南工业职业技术学院网络管理中心,河南南阳473000 [2]北京邮电大学信息与通信工程学院,北京100876

出　　处：《南京理工大学学报》2014年第4期544-549,共6页Journal of Nanjing University of Science and Technology

基　　金：国家自然科学基金(41174158)

摘　　要：为了提高无线网络控制系统对故障的灵敏度,该文根据鲁棒控制理论,对一类具有固定拓扑结构的无线网络控制系统的故障检测进行了研究。由于网络中节点的状态受到其它节点的影响,因此该文为每个节点对之间设计了故障观测器来对系统的故障进行检测。通过构建Lyapunov函数,以线性矩阵不等式的方式给出了使误差系统渐进稳定的充分条件,更进一步得到了系统的观测器增益。仿真结果表明,当系统出现故障时,故障观测器能够迅速检测到系统残差的跳变,验证了所提方法的有效性。In order to improve the sensibility of wireless networked control systems（ WNCSs） to fault, fault detection for a class of WNCSs with a fixed topology is studied based on the robust control theory. Since the states of nodes in the network are affected by other nodes,fault detection observes are designed for each pair of nodes. By constructing Lyapunov functional, sufficient conditions are acquired in terms of linear matrix inequalities to make the error system asymptotically stable,and the gains of observes are also obtained. Simulation results show that when the system fault occurs,＆amp;nbsp;residual changes can be quickly detected by fault detection observes,which verifies the effectiveness of the proposed method.

关 键 词：无线网络控制系统 固定拓扑结构 鲁棒控制 故障观测器 观测器增益 线性矩阵不等式 故障检测 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]