Coupling Safety Distance Model for Vehicle Active Collision Avoidance System 2019-01-0130
In order to improve the dynamic characteristics of the vehicle during the active collision avoidance process, a new brake system control logic was designed.At present, the research on active collision avoidance focuses on policy control and path control of collision avoidance.In the active collision avoidance collision process, few people consider the dynamic characteristics and steering stability of the vehicle.Using the co-simulation technology of CarSim and MATLAB, the simulation analysis of the avoidance process and the stability control process of the vehicle under specific collision avoidance conditions is carried out.Thereby, the stability of the vehicle is effectively improved during the active collision avoidance process of the intelligent vehicle. Based on MATLAB/Simulink and CarSim simulation, the safety of the vehicle collision avoidance and the stability performance of the vehicle during the active collision avoidance of the vehicle are analyzed.Building a vehicle dynamics model in CarSim to simulate the motion characteristics of vehicle dynamics，and building a control algorithm model in MATLAB/Simulink to test the collision avoidance performance of the active collision avoidance system.The simulation analysis is carried out under different working conditions, and the collision avoidance performance and stability performance of the vehicle are compared when the vehicle is braked under the braking control method designed in this paper and the traditional braking system control method.The simulation results show that the braking system designed in this paper is superior to the traditional braking system under the same collision avoidance deceleration, which verifies the effectiveness of the braking system designed in the active avoidance process.
jie dong, Liang Chu
Jilin University Automotive Engrg Colleg