基于小波时频分析的车轮多边形和轨道不平顺分析研究  

Research on the Wheel Polygon and Track Irregularity based on Wavelet Time-Frequency Analysis

作　　者：孙亮 张建全 沈龙江 贺世忠 SUN Liang;ZHANG Jianquan;SHEN Longjiang;HE Shizhong(CRRC Zhuzhou Locomotive Co.,Ltd.,Zhuzhou 412001,China;The State Key Laboratory of Heavy Duty AC Drive Electric Locomotive Systems Integration,Zhuzhou 412001,China)

机构地区：[1]中车株洲电力机车有限公司,湖南株洲412001 [2]大功率交流传动电力机车系统集成国家重点实验室,湖南株洲412001

出　　处：《机械》2023年第4期53-58,共6页Machinery

基　　金：湖南省科技创新计划《新一代轨道交通高效驱动系统技术》(2022GK1060)。

摘　　要：车轮多边形和轨道不平顺是当下影响地铁车辆运行品质的最主要原因。轴箱的振动是轮轨耦合振动的最直接反映,车轮多边形引起的周期性激励和轨道不平顺信息可以从轴箱振动信号中分析出来。本文使用西门子SimcenterTestLab振动控制采集分析系统采用小波变换对实测轴箱振动信号进行时频分析,得到车轮多边形引起的振动主频在59.81~88.45Hz的范围内,本方法可快速得到被测车辆车轮多边形情况以及定位轨道不平顺较为严重的区段,为工程师分析车辆异常振动提供依据。使用小波变换对轴箱振动信号进行时频分析的方法相较于传统车轮和轨道测试手段更为方便可靠。Wheel polygons and track irregularities are the most important reasons that affect the running quality of metro.The vibration of the axle box is the most direct reflection of the coupling vibration of the wheel and rail.The information of the periodic excitation and track irregularities caused by the wheel polygon can be analyzed from the vibration signal of the axle box.In this paper,the Siemens Simcenter TestLab vibration control acquisition and analysis system is employed to conduct the time-frequency analysis with wavelet transform on the axle box vibration signal,which shows that the main frequency of vibration caused by the wheel polygon is in the range of 59.81-88.45Hz.Though this method the wheel polygon situation of the tested vehicle and the section with severe positioning track irregularity can be quickly obtained,which provides a basis for the engineers to analyze the abnormal vibration of the vehicle.The time-frequency analysis of the axle box vibration signal is more convenient and reliable than the conventional wheel and track test methods.

关 键 词：小波变换 时频分析 线路不平顺 车轮多边形 轴箱振动分析 

分 类 号：TE991.8[石油与天然气工程—石油机械设备]