Abstract: In order to improve the cornering speed and handling stability of FSAE formula car, an optimization analysis method of MATLAB and ADAMS co-simulation is proposed to design the steering system. Firstly, the plane kinematics model of steering trapezoid is established by using MATLAB software, and the preliminary structure design is carried out. Then, ADAMS CAR is used to establish the virtual prototype model of the front suspension and steering system to realize dynamic optimization. The optimal Ackerman percentage of the steering trapezoid is obtained by taking the outer point of the tie rod as the optimization variable, which achieves the expected design goal. The accuracy of the simulation and optimization analysis method of MATLAB and ADAMS is verified.

Key words: FSAE racing car; Steering trapezoid; Ackerman percentage; Steering system; Optimal design

摘要： 为提高 FSAE 方程式赛车的过弯速度及操纵稳定性，提出了一种 MATLAB 与 ADAMS 联合仿真优化分析方法来设计转向系统。首先运用 MATLAB 软件建立转向梯形平面运动学模 型，进行初步结构设计，再使用 ADAMS CAR 建立前悬架和转向系统虚拟样机模型，实现动 态优化，以转向横拉杆以外点为优化变量，得到转向梯形的最优阿克曼百分比，较好地达到 了预期设计目标，并且验证了 MATLAB 与 ADAMS 联合仿真优化分析方法的精确性。

关键词: FSAE 赛车；转向梯形；阿克曼百分比；转向系统；优化设计