摘要
目前的谱分析方法都是基于用均匀采样 (等间隔采样 )数据描述轨道不平顺特征 ,而机车实际运行速度的变化必然导致采样的非均匀性 ,使分析结果严重失真。
Current spectral analysis in effect for rail ride quality is based on sampling data at uniform time interval.However the train is of fluctuation velocity in motion,which results in non_uniform interval between consecutive sampling data,therefore the accuracy of routine spectral analysis is in doubt.This paper gives a new way-re_sampling with variable frequency to eliminate the imfluence of train's uneven velocity.
出处
《振动与冲击》
EI
CSCD
北大核心
2001年第4期40-41,39,共3页
Journal of Vibration and Shock
基金
铁道部科技研究开发计划资助项目 (编号 :99J41 )
