时域同步平均技术在直升机主减速器故障诊断中的应用分析

Time Synchronous Averaging(TSA) Technology Applied in Helicopter Main Reducer Fault Diagnosis Analysis[HS)]

摘要:

由于直升机主减速器的结构特点致使振动信号的信噪比很低,给故障特征的提取带来了难度；文中以某型直升机的主减速器为研究对象,开展时域同步平均技术在主减速器故障特征提取上应用的深入研究,分析了该技术在实际中的应用以及在应用过程中的误差影响,在此基础上提出了时域同步平均误差分析的改进方法,通过在直升机主减速器飞行数据的对比应用分析,证明该方法的可行性和有效性,并能在一定程度上提高故障特征提取的精度。

Abstract:

With the structure characteristic of helicopter main reducer,the vibration signal of it has often low signal-to-noise ratio,which makes it difficult to extract fault feature. In this paper,based on a certain type of helicopter`s main reducer as the research object,carried out the Time Synchronous Averaging(TSA) technology in application of in-depth study on the main reducer fault feature extraction,. and analyzed the application of this technology in the practical and the error affect ,on the basis of this puts forward the improved method of TSA`s error analysis. The method is proved to be effective in application of based on the analysis of flight data of helicopter main reducer,and can improve the accuracy of fault feature extraction partly.