电动轮驱动的轿车差速性能试验

摘要

电动轮驱动的汽车取消了机械式差速器后,在转向行驶、路面不平及车轮半径不等3种工况下,会出现差速问题。文章进行了实车转向行驶试验和车轮半径不等时的差速试验,验证了对电动轮电机控制按转矩模式控制而转速随动以实现自适应差速的控制策略。电动轮控制器可以实现很好的差速性能,说明采用转矩控制和转速随动的策略是解决汽车电子差速问题的前提和关键。%As abolition of the mechanieal differentials in a vehicle replaced with motorized wheels, differential problems appeared in three modes of steering, road surface irregularity amt wheel with different radius. Real vehiele steering driving test and differential test of wheel with different radius has carried out. Electric wheel motor eontrol with torque mode is validated and rotating speed is followed-up to achieve adaplive differential. Electric wheel controller can aehievc better differential performance, it is indicated that adopting the strategy of torque control and rotating speed follow-up is the premises and key of the problem of electronic differential.