地铁转向架构架动应力测试滤波频率的确定

Determination of the Filter Frequency in Measurement of Dynamic Stresses on Metro Bogie Frames

文章结合上海地铁某转向架线路试验动应力测试结果,分析了典型信号的频率特性,对转向架动应力数据采用不同频率滤波,对滤波后的信号数据进行了比较,并结合采样定理提出了适用于地铁转向架荷载测试的滤波和采样频率。

With the dynamic stress measurement in on-track testing of a certain bogie for Shanghai Metro,the frequency features of typical signals are analyzed,the filter of different frequencies is applied for the dynamic stress data of bogies,the signal data after filter are compared,and with the sampling the- orem,the filtering and sampling frequencies applica- ble to the load measurement of metro bogies are put forward.