存在时延和数据包丢失的网络控制系统故障检测

考虑一类长时延网络控制系统，在假定其存在控制时延和数据包丢失的基础上对其进行故障检测．首先对系统进行建模，将故障观测器构建成随机时延切换系统模型；然后通过李雅普诺夫稳定性理论，将观测器系统的均方渐近稳定条件归结为一线性矩阵不等式，当系统正常时，若给定的矩阵不等式成立，则该观测器是渐近稳定的，当系统发生故障时，观测器残差...

Fault detection for networked control systems with delays and data packetdropout

Considering a class of networked control systems with long time delays, the fault detection is carried out with
the presence of control delays and data packet dropout. Firstly, a modeling approach of the system is presented, and the
fault observer is modeled as a stochastic switching discrete-time linear system with delay. Then, based on Lyapunov stability
theory, a linear matrix inequation gives the stability condition of this observer. When the system is normal, if the given
inequality condition is satisfied, the observer is stable. When a fault is present, the observer residual can change rapidly and
detect the occurrence of the fault. Finally, an illustrative example shows the effectiveness of the proposed method.