基于主动脉冲后轮转向的侧翻稳定性仿真与试验

发布时间：2018-06-16 17:31

本文选题：SUV + 后轮脉冲主动转向　；参考：《汽车工程》2016年07期

【摘要】：本文中提出了一种新的后轮主动脉冲转向技术来提高车辆的侧翻稳定性能,并对其进行仿真分析和试验研究。首先,设计液压脉冲发生系统,并分析其运行对悬架参数和后轮转向角度的影响,基于实验SUV车辆建立多自由度的车辆侧翻动力学模型,并分析不同脉冲参数对车辆侧翻性能的影响,确定最优的脉冲参数;接着,提出车辆侧翻动态稳定指标,设计相应的控制策略,并基于Car Sim和Simulink进行联合仿真分析;最后,在实验SUV车辆上安装液压脉冲发生器,进行整车试验。仿真和试验结果表明:所提出的策略不仅可以降低车辆侧倾因子和侧倾角,有效改善车辆的抗侧翻能力,且能减少质心侧偏角和侧向加速度,提高车辆的横向稳定性。
[Abstract]:In this paper, a new rear wheel active pulse steering technique is proposed to improve the roll stability of the vehicle, and its simulation analysis and experimental study are carried out. Firstly, the hydraulic pulse generating system is designed, and the influence of its running on the suspension parameters and rear wheel steering angle is analyzed. Based on the experimental SUV vehicle, a multi-degree-of-freedom vehicle rollover dynamics model is established. The influence of different pulse parameters on vehicle rollover performance is analyzed and the optimal pulse parameter is determined. Then, the dynamic stability index of vehicle rollover is proposed and the corresponding control strategy is designed. Finally, the simulation is carried out on the basis of car Sim and Simulink. The hydraulic pulse generator was installed on the experimental SUV and the whole vehicle test was carried out. The simulation and experimental results show that the proposed strategy can not only reduce the vehicle roll factor and slope angle, but also effectively improve the anti-roll ability of the vehicle, reduce the lateral angle of the mass center and the lateral acceleration, and improve the lateral stability of the vehicle.
【作者单位】：湖南大学汽车车身先进设计制造国家重点实验室;滑铁卢大学机电工程学院;
【基金】：国家863计划项目(2012AA111802)资助
【分类号】：U467.13

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