驱动工况下高速动车组蛇行失稳非线性度

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振动与冲击 ›› 2016, Vol. 35 ›› Issue (15) : 41-45.

论文

驱动工况下高速动车组蛇行失稳非线性度

陈双喜1,2 董大伟1 邓小军2 林建辉3

作者信息 +

Degree of Nonlinearity for Hunting Instability of High-speed EMU with Drive System

CHEN Shuang-xi1,2 Dong Da-wei1 DENG Xiao-jun2 Lin Jian-hui3

Author information +

文章历史 +

摘要

基于信号的波内调制现象定义信号的非线性指标，并研究高速动车组在驱动工况下（驱动系统在直接转矩控制下）蛇行失稳的非线性特征。首先建立包括高速动车组的车辆动力学Simpack子模型和牵引传动系统的直接转矩控制Matlab/Simulink子模型在内的机械电气耦合联合仿真模型，然后计算动力学响应，最后基于黄变换计算列车在蛇行失稳状态下动力响应的非线性指标变化。仿真结果表明：若列车出现蛇行失稳，转向架和车体横向振动非线性指标会急剧增大；完全失稳情况下，车体横向加速度非线性度大于0.1，转向架横向位移非线性度大于0.3.

Abstract

The nonlinearity index of signal is defined based on intra-wave modulation and the nonlinear characteristics for hunting instability of high-speed EMU with drive system controlled by direct torque is studied. First, a electromechanical coupling co-simulation model consists of a vehicle dynamics simpack submodel of high speed EMU and a Matlab/Simulink submodel of drive system with direct torque control strategy is built. Then the EMU is driven by motors and the dynamics response is calculated. Finally, the nonlinearity index of dynamics response is calculated based on Huang Transform. The simulation indicates: when hunting motion instability happens, the index of nonlinearity for lateral vibration of bogie and car body increases dramatically, the degree of nonlinearity for car body lateral acceleration and bogie lateral displacement exceeds 0.1 and 0.3, respectively.

导出引用

陈双喜1,2 董大伟1 邓小军2 林建辉3. 驱动工况下高速动车组蛇行失稳非线性度[J]. 振动与冲击, 2016, 35(15): 41-45

CHEN Shuang-xi1,2 Dong Da-wei1 DENG Xiao-jun2 Lin Jian-hui3 . Degree of Nonlinearity for Hunting Instability of High-speed EMU with Drive System[J]. Journal of Vibration and Shock, 2016, 35(15): 41-45

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