AMT混合动力系统驱动模式能量优化控制

Power management for hybrid electric system during driving

在AMT混合动力系统转矩优化分配算法的基础上,提出了以动力总成系统效率最大化为目标的AMT档位优化控制来优化转速,并通过离线优化求解确定了不同状态(发动机和电机功率、车速、蓄电池SOC)下AMT的最优化档位控制规律和电机最优化转矩。仿真试验结果表明,能量优化控制算法显著改善了整车燃油经济性。

The automated mechanical transmission(AMT) shift control aiming at the maximization of powertrain system efficiency was implemented to optimize the speed as the basis for the optimal torque distribution strategy for hybrid electric system.The AMT optimal shift control law and the electric motor optimal torque are essentially look-up table-based control according to the engine power,the electric motor power,the vehicle velocity and the state of charge of the battery after off-line calculations.Simulation results show that potential fuel economy improvement has been achieved by using the power management.