基于效率最优的四驱纯电动转矩分配仿真分析

文章针对前、后双电机动力分布式纯电动汽车,以优化能量消耗为目标,如何合理的动态分配前、后轴转矩的问题进行了研究。首先依照制动法规、驱动电机动态响应和车辆纵向平顺性等要求,提出切实可行的分配计算与优化方法,并且区分驱动和制动两种工况。之后采用循环工况仿真验证的方法,进行能耗分析。通过与固定分配方法结果的对比,验证了所提分配方法有效性。

Simulation analysis of torque distribution of four-wheel-drive pure electric based on optimal efficiency

In this paper,aiming at optimizing energy consumption,the optimal dynamic torque split is studied for the electric vehicle with front and rear motors.In the first part,for the driving and braking conditions,and according to the braking regulations,the dynamic response of the motors and the drivability performance of the vehicle,a feasible torque spilit calcula-tion and optimization method is proposed.In the second part,with cyclic operations simulation,the energy consumption is analyzed between this torque split method and fixed proportion split.And by the comparing with the results of the two methods,the proposed method is effective to optimizing energy consumption.