基于第3轴随动转向的半挂汽车转向特性分析

Analysis of Steering Characteristics of Semi-Trailer Based on 3rd Axle Self-Steering

建立的半挂汽车列车模型,进行转向机动性分析,包括低速360?转弯、低速90?转弯、低速角阶跃转向和斜坡脉冲转向试验,分析随动桥对整车转向机动性和半挂车轨迹跟随性能的影响。仿真结果表明:随动桥有利于减小半挂车向转向内侧的侧滑,有助于提高半挂汽车列车的转向机动性和半挂车第三轴的轨迹跟随能力。

The modeling coordinate was defined and the vehicle parameters were presented. The several maneuverability cases were conducted with the two virtual prototypes, including 360-degree turning, 90-degree turning, step steering and ramp steering at the low-speed. The effect of self- steering axle on vehicle maneuverability and path-following was analyzed. The results show that, not only the side slip of semi-trailer is lightened, but also the maneuverability and path-following performance of tractor-semitrailer are improved if assembled a self-steering axle.