随机减量法识别转向架构架的频率

Identification of Bogie Frame Modal Parameter by Random Decrement Technique

随机减量法是一种随机激扰下的模态参数识别方法。在实际线路上对CW-200转向架构架的振动加速度进行了测量,并依据随机减量法对测得的加速度数据进行了构架的三阶刚体模态的识别,得到了三阶刚体模态对应的频率。证实了随机减量法识别构架模态参数的可行性。

Random decrement technique is a kind of method of modal parameter identification under random excitation. Vibrationg acceleration of CW - 200 bogie frame is measured on real line and modal parameter of frame is identified by random decrement technique. Vibrating frequency of frame has been obtained.