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中文摘要：
利用小波变换和互相关函数分析了列车横向振动与轨道不平顺输入之间关系。轨道不平顺输入引起了列车横向振动, 为了抑制横向振动并预测其变换规律, 需要研究两者之间关系。首先利用Simulink软件建立了列车横向系统模型, 模拟列车横移、侧滚和摇头振动信号; 然后利用小波变换和互相关函数分析了上述三种振动与轨道方向、水平不平顺输入之间关系。仿真结果表明, 水平不平顺与横移和摇头振动之间的互相关函数大于方向不平顺, 而方向不平顺与侧滚振动之间的互相关函数大于水平不平顺。结果证实了水平不平顺是引起列车横移和摇头振动的重要因素, 方向不平顺是引起列车侧滚振动的重要因素。
英文摘要：
This paper analyzed relationship between train＇s lateral vibration and track irregularity input by wavelet transform and the cross-correlation function. Track irregularity input leaded to train lateral vibration, it analyzed the relationship between them to reduce the lateral vibration and predict of vibration changes. Firstly, it established train lateral vehicle model by Simulink, and then simulated lateral, rolling and yawing vibration signal. Secondly, it analyzed relationship between three kinds of vibration above and horizontal irregularity input as well as alignment irregularity input by wavelet transform and the cross-correlation function. Simulation results show that cross-correlation function value between horizontal irregularity and lateral, yawing vibration is bigger than that between alignment irregularity and lateral, yawing vibration, and cross-correlation function value between alignment irregularity and rolling vibration is bigger than that between horizontal irregularity and rolling vibration. It is affirmed that horizontal irregularity is the important factor causing train lateral and yawing vibration, and alignment irregularity is the important factor causing train rolling vibration at the same time.
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