作　　者： ; ;

机构地区： 江南大学物联网工程学院

出　　处： 《计算机技术与发展》 2012年第11期61-64,68,共5页

摘　　要： 针对一类具有数据包丢失的无线网络控制系统,根据数据包丢失和未丢失的情况,同时结合无线网络控制系统数据传输过程中时延的特点,设计了具有时延补偿功能的鲁棒H∞观测器进行故障检测。当系统未发生故障且不存在未知扰动时,系统是稳定的,当存在未知扰动时,系统满足一定的H∞性能。为了及时检测系统的故障并减小系统故障的误报率,设计了残差评价信号,当系统发生故障,残差评价信号即刻超过指定值,系统检测出故障。所得结果通过仿真示例得到了验证。 For a class of wireless networked control systems with packet dropout,according to packet loss and not loss,combined with the delay characteristics of the wireless networked control systems during data transfer, a robust Ho∞ observer with delay compensation has been designed to make a fault detection of the systems. When there are no faults and unknown disturbance, the systems is stable t with the presence of unknown disturbance,the system meets certain H∞ performance. In order to detect faults instantly and reduce the false alarm rate, designed a residual evaluation signal, when a fault occurs, the residual evaluation signal exceeds the threshold rapidly to imply that fault is detected. All obtained results have verified through simulation examples.

关 键 词： 无线网络控制系统 数据丢包 稳定性 故障检测

领　　域： [自动化与计算机技术] [自动化与计算机技术]