控制臂改进型麦弗逊悬架运动学性能研究

Kinematics Performance Research of Macpherson Suspension with Improved Control-arm

利用多体动力学理论,在虚拟样机仿真软件ADAMS/Car中建立了传统型麦弗逊悬架及控制臂改进型麦弗逊悬架模型。通过运动学仿真计算可知,在车轮上、下跳动过程中,改进型麦弗逊悬架使车轮外倾角、车轮前束、主销内倾角、车轮转角、抬头量和点头量的变化范围更小,主销后倾角变化范围稍大,更有利于操纵稳定;与传统型麦弗逊悬架相比,控制臂改进型麦弗逊悬架运动学性能有明显提高。

Based on Multi-body Dynamics theory, multi-body models of traditional Macpherson suspension and Macpherson suspension with improved control-arm are both established on virtual prototype-ADAMS/Car in this paper. Kinematic simulation results show that improved Macpherson suspension can reduce the values of camber angle, toe angle, kingpin inclination angle, steer angle and lift/dive, increase the values of caster angle slightly compared with traditional Macpherson suspension. Macpherson suspension with control-arm enhances vehicle/s kinematic characteristics. Hence, it is more favorable for vehicle handling stability than traditional Macpherson suspension.