关键词: 轮毂驱动, 电动汽车, 再生制动, 控制策略, 能量回收

Abstract: With the maximum range of motor braking participation during braking stability as the target, this paper uses a braking feedback control strategy of four-wheel hub driven electric vehicles as the research content, and considers the influence of coordinated control of the anti-lock braking system and motor braking on the regenerative braking. Based on the ideal braking force distribution I curve, the front and rear axle braking force distribution limit control line is determined, and a braking torque of two bridges is designed according to the motor power, ensuring an optimal distribution strategy of intervention priority and maximum participation of the feedback braking system on a single axle. An energy feedback control model based on Matlab/Simulink is constructed to analyse and evaluate the feasibility of regenerative braking under UDDS operating conditions. The simulation data show that, under a single operating condition, 0.126 kW·h of energy is recovered by using the optimised control strategy, which is 7.7% higher than that in the conventional fixed-proportional strategy. Compared with the ordinary fixed-proportional control and the control scheme without regenerative braking, the proposed control strategy reduces energy consumption by 1.99% and 7.30% respectively under the UDDS cycle conditions, and the energy saving effect is 7.29%. The peak value of impact during vehicle regenerative braking is only 1.72 m·s-3, resulting in good braking comfort.