两种基本阵风构型与组合对多轴汽车操纵稳定性的影响

Handling and Stability for Multi-axle Automobile under Two Basic Gust Configurations and Their Combination

分析了汽车驶过阵风过程与五种阵风构型,建立了恒值和递增线性两种基本阵风构型对汽车作用模型。由两种基本阵风构型获得了递减线性、递增组合、递减组合三种组合阵风构型对汽车作用模型。通过仿真获得了五种阵风构型对三轴汽车的侧向力、横摆力矩、侧向加速度、横摆角速度、质心侧偏角曲线,分析了阵风对汽车操纵稳定性影响。以恒值阵风为例,模拟出不同阵风强度和车速下消除阵风影响所需的车轮转角变化曲线,有利于驾驶员有效控制阵风影响。

The process of automobile passing gust and five gust configurations are analysed. The models for automotive side force and yew moment exerted by the two basic gust configurations of constant gust and linear increasing gust are derived, and the models of linear decreasing, incremental combination and decremental combination gust configuration are deduced based on two basic gust configurations. The lateral force, yaw moment, lateral acceleration, yaw rate and sideslip angle curves exerted on by the five gust configurations are obtained by a three-axle automobile handing and stability simulation, and it is analysed that the affect of five gusts on the automobile. The necessary wheel angles for eliminating constant gust influence is simulated under different gust strength and vehicle speed, and it is helpful for the driver to control the gust effect efficiently.