大系统中的故障检测

Failure Detection in Large Scale Systems

针对线性时不变大系统,本文提出一种故障检测方案。通过构造一组全阶未知输入观测器来估计局部状态,而这些局部估计器(未知输入观测器)无须任何全局信息。这些观测器的残差被用于子系统的故障检测。该方案的主要特点是极易进行故障隔离,即进行子系统级的故障定位。

A failure detection scheme is proposed for linear time-invariant large scale systems. The full -order unknown input observers are constructed to estimate the local states, the local state estimators ..(unknown input observers) do not need any global information. The residuals of these observers are applied to failure detection for subsystems. An attractive property of the proposed scheme is an esay failure isolation, which locates the failure within the level of subsystems.