Management strategy of hybrid electrical vehicle based on driving style recognition

Abstract

To improve fuel economy of the hybrid electrical vehicle(HEV), this article aimed at present energy management strategy wasn't considered the impact of fuel economy bring by different driving styles. Used jerk analysis which is caused by the vehicle traveling state for getting the method to distinguish different driving styles under different driving cycles. Speed of different driving styles is gained by this method. The optimal power distribution with combination of driving cycle identification, speed of different driving styles, equivalent consumption minimization strategy to formulate the energy management strategy of HEV based on driving style recognition are acquired. The new energy management strategy to a stochastic driving cycle is applied. The simulation results demonstrate that relative to the control strategy without driver style recognition, the formulated control strategy make the fuel consumption reduce 8.47%, engine operating points are more adjacent to the engine's optimal efficiency curve, battery SOC is more steady and better maintaining in high efficient area.