基于滞后效应的轨道不平顺与车体振动间的相关性研究

Correlation Study Between Track Irregularity and Vehicle Body Vibration Based on Lag Effect

基于轨道不平顺对车体垂向振动的影响存在滞后性的特点,研究了轨道不平顺与车体振动的相关性。通过"变量筛选",对数据8步移动平均处理进行"变量滤波"、"关系滞后效应处理"等一系列的技术处理,建立了变滞后量回归模型,改善了二者之间的拟合效果。绘制变滞后的垂直加速度与其估计值的对比线图,通过更直观地分析发现两者变化趋势基本一致,各区域内两者的极大值、极小值基本同步。

Based on that the influence of track irregularity on vertical vibration of car body existshysteresis characteristics,the correlation between track irregularity and car body vibration is studied.By “ variable screening”, and that the data is processed by 8 steps moving average method to“variable filtering” and “ Relational lag effect processing” and a series of technical treatments, achanging lag regression model is established. It improved the fitting effect. A n d chart between the changing lagged vertical acceleration and its estimated value. The more intuitiveanalysis shows that the trends of the two changes are basically the same, and the m a x i m u m andminimum points of the two are basically synchronized.