驱动力分配控制对车辆转向行驶稳定性的影响  

Influence of Driving Force Distribution Control on Vehicle Steering Stability

作　　者：胡建军[1] 刘辉[1] 何铮斌[1] 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400044

出　　处：《中国公路学报》2013年第5期183-190,共8页China Journal of Highway and Transport

基　　金：重庆市自然科学基金计划项目(CSTC2010BB4233)

摘　　要：为提高转向工况下四轮驱动汽车的行驶稳定性,分析了轴间和轮间扭矩分配特性,建立了四轮驱动汽车动力学模型,研究了驱动力分配对车辆转向行驶稳定性的影响,提出了基于横摆力矩的驱动力矩分配控制策略,并在单移线工况下进行控制性能仿真分析。结果表明:采用提出的驱动力矩分配控制策略,能根据车辆的行驶状态主动地分配后轴左、右轮的驱动力,有效抑制车辆过多转向和不足转向趋势,提高整车的转向性能和侧向稳定性。To improve the driving stability of four wheel drive vehicles under the steering condition, the torque distribution characteristics of inter-axle and inter-wheel were analyzed. Vehicle dynamic mathematical model was established. The influence of driving force distribution on vehicle steering stability was studied. Drive torque distribution control algorithm based on yaw moment was proposed, and the control performance was analyzed under the single-lane condition. The results indicate that by using the torque distribution control strategy proposed in this paper, the driving force can be distributed actively between the left and right wheel in rear axles according to the vehicle state, the trends of vehicle oversteer and understeer are inhibited effectively and the performance of vehicle steering and lateral stability are also improved.

关 键 词：汽车工程 四轮驱动汽车 仿真 扭矩分配 控制策略 操纵稳定性 

分 类 号：U463.2[机械工程—车辆工程]