【摘要】 为了改善25T型客车运行时的横向平稳性能，文章基于开关型天棚阻尼半主动控制策略，利用MATLAB/Simulink软件搭建了二系横向减振器模型，并联合多体动力学软件Simpack进行动力学仿真分析。在传统半主动控制模型的基础上，考虑减振器节点刚度对半主动控制效果的影响，并对比分析了被动控制、传统半主动控制和考虑节点刚度的半主动控制对车辆的运行平稳性、运行稳定性和曲线通过性能的影响，分析时滞对控制效果的影响。仿真结果表明，半主动控制可以很好地改善车辆横向平稳性能，但是会降低车辆的非线性临界速度。其中，相较于被动控制，采用传统半主动控制与考虑节点刚度的半主动控制的横向平稳性指标分别降低了14.5%与15.8%，非线性临界速度分别降低了8.09%与6.94%，而两者对车辆的曲线通过性能影响不大，均有足够的安全裕度。为保证半主动控制的效果，应将系统响应时滞控制在80 ms以内。更多还原

【Abstract】 This study aims to enhance the lateral stability performance of 25T passenger cars during operation. To this end, a secondary transverse damper model was constructed using Matlab/Simulink, based on an on-off skyhook damping semi-active control strategy. Dynamics simulation analysis was carried out in conjunction with Simpack, which specializes in multi-body dynamics. The analysis considered the influence of damper joint stiffness on the semi-active control effect, building on the traditional semi-active control model.A comparative analysis was performed to investigate the effects of passive control, traditional semi-active control, and semi-active control utilizing damper joint stiffness on the running smoothness, running stability and curve negotiation performance of the vehicles. The effect of time lag on the control effect was also examined. The simulation results indicate that the semi-active control significantly improves the lateral stability performance of the vehicles, but it reduces their nonlinear critical speed. Compared to passive control, traditional semi-active control and semi-active control utilizing joint stiffness resulted in a decrease in the lateral Sperling index by 14.5% and 15.8%, respectively, and a reduction in the nonlinear critical speed by 8.09% and 6.93%, respectively. Additionally, no significant effects were identified on the curve negotiation performance with these two control modes, indicating adequate safety margins. Study results also suggest that controlling the response time-lag of the system within 80 ms is essential to ensure the effect of semi-active control.更多还原