Abstract
The possibility of recovering vehicle kinetic energy is one inherent advantage of hybrid electric vehicle (HEV). Due to the introduction of electric regenerative braking, the structure, design and control of a hybrid electric vehicle is quite different from the pure mechanical braking of conventional vehicles. In this paper, the decelerations of the vehicle in typical urban driving cycles and the influences of regenerative braking have been investigated. The results provide strong supports to the design of the braking force distribution strategy for the hybrid electric vehicle. This paper designs a deceleration sensitive braking force distribution strategy to distribute the desired total braking force to the front and rear axles. This strategy can recovery more braking energy and can keep the vehicle more stable while the vehicle is braked. The proposed distribution strategy is tested through the simulation, and the simulation results show the distribution strategy is effective.
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