基于小波分析的铁路车辆轮对纵向非稳态振动研究  

Study on Railway Wheelset Longitudinal Non-stationary Vibration based on Wavelet Analysis

作　　者：陶伟文[1] 刘韦 罗跟东 卜继玲[1] 刘振光[1] TAO Weiwen;LIU Wei;LUO Gendong;BU Jiling;LIU Zhenguang(Zhuzhou Times New Material Technology Co., Ltd., Zhuzhou 412007, Hunan China;Wuxi Metro Group Co., Ltd., Wuxi 214023, Jiangsu China)

机构地区：[1]株洲时代新材料科技股份有限公司,湖南株洲412007 [2]无锡地铁集团有限公司,江苏无锡214023

出　　处：《噪声与振动控制》2019年第4期125-129,共5页Noise and Vibration Control

摘　　要：基于小波分析法研究铁路车辆轮对纵向非稳态振动问题,分别采用傅立叶变换、离散小波变换和连续小波变换法研究一系定位刚度突变、车辆变速运行工况下轮对的纵向振动特点。结果表明:傅立叶变换无法分析轮对的非稳态振动问题,而采用小波分析方法可以很方便地提取轮对定位系统参数突变或受到瞬时冲击的信息以及车辆在变速运行过程中轮对的非稳态振动信息。Based on the wavelet analysis, the problem of railway wheelset non-stationary vibration is studied. Fourier transform, discrete wavelet transform and continuous wavelet transform methods are adopted to study the longitudinal vibration characteristics of the wheelset under the conditions of primary suspension longitudinal stiffness mutating and vehicle’s running at variable speeds. The results show that using Fourier transform is unable to analyze wheelset nonstationary vibration problems. While using wavelet analysis method can easily extracted the characteristics of wheelset nonstationary vibration signals when the primary suspension longitudinal stiffness is mutating and the vehicle is running at a variable speeds.

关 键 词：振动与波 时频分析 小波分析 轮对纵向非稳态振动 时变参数 变速运动 

分 类 号：O422.6[理学—声学]