基于限滑差速器驱动的防滑控制

Anti-slip Regulation Based on Limited-slip Differential

在分析限滑差速器力矩传递特性基础上,建立了限滑差速器、液压控制系统和后轮驱动汽车整车动力学方程.以驱动轮滑转率和角速度差变化率为控制门限设计了控制逻辑.采用Simulink/Stateflow工具箱,设计了逻辑门限控制器.在分离附着路面上进行了整车加速性能仿真研究,结果表明,基于限滑差速器的驱动防滑控制系统能充分利用高附着路面附着力,有效抑制左右驱动轮转速差,提高车辆驱动性能.

Based on analyzing the torque＇ s transfer behavior of limited-slip differential, the dynamic equations of rear wheel driving vehicles and limited-slip differential are established. The control logic is designed by using the relative slip rate of the driving wheel and change rate of the angular velocity difference as the threshold. The controller is designed by using Simulink/Stateflow. Simulation of acceleration course on split-μ roads was carried out. Results show that the control system can sufficiently utilize the higher attachment coefficient＇ s adhesive power and effectively inhibit the speed difference of the driving wheels. The acceleration ability is improved.