研究含有测量时滞的线性系统的故障诊断和自修复控制问题。提出了一种测量时滞系统基于降维状态观测器的故障诊断方法。-The problems of fault diagnosis and self-restore control were studied for linear systems with delayed measurements. A reduced-order observer-based fault diagnosis approach was proposed for systems with delayed measurements in this note.