关键词: 线控转向系统, 路感模拟, 回正力矩, 驾驶员偏好力矩, 主动回正控制

Abstract: Aiming at the problem that the steer-by-wire (SBW) system cannot directly transmit road feeling to the driver through the steering wheel,this paper establishes a dynamic model of steering wheel modules and resetting torque,and designs a comprehensive road feeling simulation control algorithm for the power assist torque,the limit torque,the friction torque and the damping control torque.Considering the defects of insufficient steering wheel correction when the vehicle runs at a low speed,an active correction control algorithm is designed and a specific formula is derived.Finally,the simulation and the hardware-in-the-loop test results show that the designed road feeling simulation control algorithm meets the requirements of light low-speed steering and clear high-speed road feeling,and reduces the positive residual angle of the steering wheel so as to improve the vehicle aligning performance.