关键词: 方程式赛车；悬架系统；解耦悬架；仿真分析

Abstract: The suspension system is an important part of the vehicle, contributing significantly to the handling stability of a race car. In order to adapt to the varying track conditions of the formula student electric China (FSEC) to different track environments and reduce the mutual influence of the two side wheels during leaning and rolling, a fully decoupled suspension structure is designed. This suspension system includes guiding mechanisms, shock absorbers, lateral anti-roll bars, etc. Through the geometric parameter design and mechanical analysis of two shock absorbers and their connected guiding mechanisms, the separation of the car's roll stiffness and pitch stiffness are effectively achieved. The study conducts kinematic simulation and analysis of the decoupled suspension system using MATLAB. The results indicate that this structure exhibits minimal influence between the two shock absorbers during the vehicle's leaning and pitching, enabling independent control and adjustment of the car's roll stiffness and pitch stiffness. This design enhances the overall handling performance of the race car, making it more adaptable to race tracks, thereby assisting in improving the performance of the racing team.

Key words: Formula SAE; Suspension system; Decoupling suspension; Simulation analysis