Abstract: The motor control of battery electric vehicle has a significant impact on comfortable and dynamic performance. The general feedback control may cause the vehicle slip away. To simulate the operating mode of hydraulic torque converter, the evaluation indexes that are vehicle jerk, rampway holding degree and the maximum stable velocity without accelerator pedal are analyzed and the vehicle dynamic mode is established. The starting control strategy without accelerator pedal for brake signal stage and non-brake signal stage and the starting-accelerating control strategy with accelerator pedal are studied based on the test data of hydraulic torque converter to realize the same advantages of hydraulic torque converter, which can hold on the rampway and start comfortably. The starting and accelerating simulation of battery electric vehicle are carried out using MATLAB/Simulink. The results indicate that the starting-accelerating control strategy can improve the dynamic and comfortable performance and realize non-slip control on rampway

Key words: Battery electric vehicle; Hydraulic torque converter; Starting-accelerating control; Rampway self-adaption

摘要： 纯电动汽车电机控制技术对车辆纵向平顺性和动力性有着重要影响。分析一般反馈控 制可能会造成汽车起步时的倒溜现象，以模拟液力变矩器起步加速工况为目标，提出纯电动 汽车的冲击度、驻坡坡度和无油门下的最大稳定车速评价指标，并建立整车动力学模型，基 于液力变矩器驱动特性试验数据，提出有无制动踏板信号两个阶段的无油门起步控制策略和 有油门的起步加速控制策略，力求实现纯电动汽车具有与液力变矩器相同的性能，能在一定 坡度上平稳起步加速，无后溜趋势，动力性与平顺性俱佳。基于 MATLAB/Simulink 平台对纯 电动汽车起步加速过程进行仿真分析，结果表明，文章提出的起步加速控制策略能显著改善 纯电动汽车的动力性与平顺性，实现无溜车控制。

关键词: 纯电动汽车；液力变矩器；起步加速控制；坡道自适应