Study on the Influence of Vehicle Structural Parameters on Vehicle Handling Stability

摘要

In order to explore the strategy that improves the vehicle handling stability, a 3-DOF vehicle model of angle step input was simulated based on MATLAB. The influence of vehicle structural parameters on vehicle handling stability based on high lateral acceleration was analyzed. Then, the influence of suspension sway bar on vehicle handling stability based on field vehicle test also was analyzed. The results show that, wheelbase, damping shock absorber and suspension roll angle stiffness are the important factors that influence the vehicle handling stability when the vehicle has a high lateral acceleration. With the increasing of vehicle velocity, the importance of stabilizer bar on vehicle handling stability enhance as well. Understeer and roll characteristic is improved by changing the diameter of the sway bar. Furthermore, the vehicle handling stability is improved and the security of vehicle driving is enhanced.