应用随机减量和模态分析方法辨识机车轮对模态和物理参数

Applying random decrement technique and modal analysis to identify the modal and physical parameters of locomotive wheelset

讨论了轮对横向振动中参数的随机减量时域识别方法 ,从轮对随机响应中提取自由响应 ,识别出物理参数 ;以锥型踏面和磨耗型踏面的情况分别为例进行了分析 ,并提出了随机减量函数的提取方法 ,计算结果表明 。

The random decrement time domain identification method is discussed for wheelset lateral vibration parameters.The freedom response can be got from random response,and then physical parameters can be identified.The way of getting random decrement function is proposed,based on analysing the constant conicity and unconstant conicity wheel tread.The computing results show that the accuracy is very high.