广义解调时频分析方法在变速器齿轮故障诊断中的应用  

The Application of Generalized Demodulation Time-frequency Analysis to Fault Diagnosis of Transmission Gear

作　　者：舒浩华[1] 于德介[1] 

机构地区：[1]湖南大学,汽车车身先进设计制造国家重点实验室,长沙410082

出　　处：《汽车工程》2009年第3期282-286,共5页Automotive Engineering

基　　金：国家自然科学基金(50605019);高等学校博士点专项科研基金(20060532009);中国博士后科学基金(20080430154)资助

摘　　要：针对故障齿轮振动信号多表现为多分量调幅-调频特征的状况,将广义解调时频分析方法应用于齿轮的非平稳振动信号处理,得到齿轮振动信号的时频分布,正常和故障状态下振动信号的时频分布区别明显。实验分析结果表明,广义解调时频分析方法优于其它时频分析方法,能有效地应用于齿轮非平稳振动信号的分析。Based on the fact that the most vibration signals of faulty gear show the feature of multi-component amplitude-modulation and frequency-modulation （AM-FM）, the method of generalized demodulation time-frequency analysis is used in processing non-stationary vibration signals of gear to obtain the time-frequency distribution of gear vibration signals, which under faulty state is quite different from that under normal state. The experimental results demonstrate that the generalized demodulation time-frequency analysis method is superior to other time-fre- quency analysis methods and can be applied to the analysis on non-stationary vibration signals of gear.

关 键 词：变速器 齿轮 故障诊断 广义解调 时频分析 

分 类 号：U472.4[机械工程—车辆工程]