基于机械自动变速器的电动变速驱动转矩控制最优换档策略

Optimal Torque Control Strategy of Electric Transmission Driver Based on AMT During Gear Shift

对机械自动变速器(Automatic Mechanical Transmission,AMT)的电动变速驱动单元(Electric Transmission Driver,ETD)在不同换档工况下的输入转矩控制换档策略进行了深入研究,并进行了实车道路试验.试验结果表明,装备电动变速驱动单元的混合动力汽车的换档质量、行驶平顺性和乘坐舒适性比装配传统AMT的原型车得到了较大提升.

The electric transmission driver （ETD） integrates the transmission and permanent magnet synchronous motor into a compositive new type hybrid power unit assembly, which can perform shift, generate electricity, regenerative braking and drive function. The ETD not only integrates the transmission and motor into a compositive unit, makes the hybrid power system become smaller and can be used in different types of vehicles, but also can satisfy the requirement of hybrid power system integrative control. Two kinds of input torque optimal control strategies of ETD based on AMT （automatic mechanical transmission） under different shift condition were discussed and validated based on road test. It is found the gear shift quality, riding comfort and driving smoothness of HEV equipped with ETD are obviously much better than the bus equipped with conventional AMT according to the input torque control strategies from the experiment data results.