Research on Stability Control and Optimal Algorithm of Regeneration for Distributed Drive Four-wheel Drive Vehicles

Abstract

For the braking regeneration process of distributed 4WD vehicles, based on the requirements of ECE R13 regulations and I curve and on the premise of vehicle stability, further consider achieving the optimal braking energy feedback. On the distributed drive control, a fuzzy control algorithm does design to combine stability control with optimal regenerative braking energy feedback control, and the limiting conditions of battery and motor on torque output are comprehensively considered. The driving or braking torque demand of a four-wheel drive motor is given, which improves the stability of a four-wheel drive vehicle and achieves optimal braking energy recovery. Finally, the effectiveness of the strategy is verified by the actual vehicle tests under pylon course slalom and double-shift conditions.