发动机磨损状态的相同频率诊断法

The Method of Same Frequency Analysis for Diagnosing the Diesel′s Wear Condition

相同频率诊断法是根据发动机的工作特点 ,将每缸振动信号进行分段 ,对每段信号分别进行频率分析 ,并将各段频率中的相同频率个数作为汽缸磨损程度的依据 ,这在一定程度上解决了发动机磨损诊断中的频率迁移性、多样性 ,为相关机械的磨损诊断提供了一种新的途径。

According to the engine′s working features,this method divides the vibration signal into several fields ,and takes the number of same frequency of each field as the wear index for each cylinder.This method has solved the problem of frequency′s diversity and polytropism in wear condition diagnosis,and provides a new way for similar mechanism′s wear diagnosis.