汽车高速转向工况下的稳定性控制研究

Research on Stability Control of Vehicle under High Speed Steering Condition

为提高汽车在高速转弯工况下的稳定性,文章提出一种基于模糊控制的制动力控制系统。将控制目标设置为车辆的质心侧偏角与车辆的质心侧偏角,通过差动制动产生的补偿力矩进行对车辆行驶姿态的调整。根据CARSIM数据库中以有车型建立整车模型,利用MATLAB/SIMULINK建立差动控制系统,并采用CARSIM-MATLAB联合仿真的方法针对不同路面、不同车速进行分析。仿真结果表明在不同速度、不同路面下均能取得比较明显的效果,从而提高在高速转弯工况下的操纵稳定性。

In order to improve the stability of the car under high-speed turning conditions, a braking force control system based on fuzzy control is proposed in this paper. The control target is set to the vehicle’s centroid side deflection angle and the vehicle’s centroid side deflection angle, and the driving attitude of the vehicle is adjusted by the compensation torque generated by the differential braking. According to the CARSIM database, a complete vehicle model is established with existing models, a differential control system is established using MATLAB/SIMULINK, and a CARSIM-MATLAB joint simulation method is used to analyze different road surfaces and different vehicle speeds. Simulation results show that obvious effects can be obtained at different speeds and different road surfaces, thereby improving the steering stability under high-speed turning conditions.