Braking control strategy study for hybrid electric vehicle with braking torque dynamic distribution

Most hybrid electric vehicle (HEV) employs both hydraulic braking system and regenerative braking system together, due to the effect of regenerative braking torque; the traditional hydraulic braking control strategy should be adjusted to assure the braking safety. A combined control strategy was proposed, and a fuzzy logic approach was applied to dynamically adjust the hydraulic braking torque and the regenerative braking torque which based on the dynamic distribution of total braking torque, a good compromise between two kinds braking torque could be obtained for the vehicle. The simulation results shows that the proposed strategy is steady and effective, and it can regenerate energy effectively and assure the braking safety.