Signal autocorrelation characteristic is used for fault detection and the fault detection formula and algorithm are present edin this paper.The implementation under two kinds of signals is discussed.

• 本文将信号的自相关特性应用到故障检测中，给出了故障检测的表达式，分别讨论了两类信号的故障检测实现方法，还给出了检测故障的算法。