基于振动能量及传递函数分析的转向架故障诊断应用.PDF

第41卷第 10期 中国测试 Vol.41 No.10 2015年 10月 CHINA MEASUREMENT TEST October，2015 doi院10.11857/j.issn.1674-5124.2015.10.027 基于振动能量及传递函数分析的转向架故障诊断应用 曾 华袁 吴赟松袁 吴学杰袁 钟知原 （西南交通大学牵引动力国家重点实验室，四川 成都 610031） 摘 要院该文针对转向架故障诊断方法在实际应用中的不足袁以国内某线路上列车转向架电机故障分析为例袁在对转 向架振动机理以及大量实测振动数据分析的基础上袁提出联合运用均方根值尧功率谱密度和振动传递函数3种特征 提取方法作为故障诊断依据遥 实际应用结果表明袁该方法能有效地提取正常和故障状态下转向架各部位振动信号特 征信息袁并快速尧准确地识别出故障源袁可用于列车转向架的状态监测和故障识别袁为后期的设备更换及构架设计提 供可靠依据遥 关键词院转向架曰故障诊断曰均方根值曰功率谱密度曰传递函数 文献标志码院A 文章编号院1674-5124渊2015冤10-0121-04 The application of fault diagnosis of train bogie based on vibration energy and transfer function analysis ZENG Hua，WU Yunsong，WU Xuejie，ZHONG Zhiyuan （State Key Laboratory of Traction Power，Southwest Jiaotong University，Chengdu 610031，China） Abstract: A new method was proposed to solve the deficiency in bogie fault diagnosis in practical application. The motor failure of train bogies on a domestic railway was illustrated. It put forward for thefirsttime to use root-mean-square （RMS），power spectraldensity （PSD）andvibrationtransfer function at the same time to diagnose motor faults in combination with the vibration principle of the bogie and the analysis of extensive measured data. The application results show that this method can reliably extract feature information of vibration signals from all parts of the bogie under normal and abnormal conditions and identify the fault sources in a quick and accurate manner. Thus，it is suitable for monitoring the conditions and identifying the failure of train bogies， providing a reliable basis for later equipment replacement and framework design. Keywords: bogie；fault diagnosis；RMS；PSD；transfer f