惰行工况下汽车列车横向稳定性分析  

Lateral stability analysis of tractor-semitrailer under idle running condition

作　　者：刘宏飞[1] 许洪国[1] 徐溦[2] 

机构地区：[1]吉林大学交通学院,吉林长春130025 [2]石家庄经济学院数理学院,河北石家庄050031

出　　处：《河北科技大学学报》2009年第3期266-270,共5页Journal of Hebei University of Science and Technology

基　　金：国家自然科学基金资助项目(50475008)

摘　　要：建立包含可变鞍座阻尼力矩的汽车列车数学模型,采用轻微制动与施加转向轮横向扰动来模拟汽车列车的惰行工况。仿真分析了该工况下系统横摆加速度和横摆角速度等运动参数的变化响应,并初步探讨了施加鞍座阻尼力矩对横向稳定性的改善作用。研究结果表明:横向扰动是产生系统摆振的主要因素,施加适当的鞍座阻尼力矩可有效改善系统横向稳定性。A tractor-trailer mathematical model including the alterable saddle damping moment was established. The idle running condition of tractor-trailer using slight brake and imposing transverse perturbation of steering wheel was simulated. The change response to motion parameters of the system such as yaw acceleration and yaw rate were simulated and analyzed under the idle running condition. The improvement for lateral stability in the role under the saddle damping moment was discussed. The results show that the transverse perturbation is a major factor in generating system shimmy, and the saddle damping moment imposed appropriately can be effective in improving the lateral stability of the system.

关 键 词：半挂汽车列车 鞍座 阻尼 横向稳定性 仿真 

分 类 号：U469.5[机械工程—车辆工程]