纯电动四驱汽车分轴过零控制策略研究  

Research on Zero-Crossing Control Strategy of Sub-Axle for Pure Electric 4-Wheel-Drive Vehicles

作　　者：阳鹏 裴赫 Yang Peng;Pei He(Chengdu Research Institute,Weltmeister Motor Technology Co.,Ltd.,Chengdu 610110)

机构地区：[1]威马汽车科技集团有限公司成都研究院,成都610110

出　　处：《汽车文摘》2023年第2期55-58,共4页Automotive Digest

摘　　要：电动车的能量回收涉及电机正负转矩切换、过零,双电机四驱电动汽车前后轴都会过零。转矩控制不佳会造成过零时车辆抖动,为了优化纯电动四驱汽车双电机过零带来的驾驶抖动问题,设计了一种四驱车分轴交替过零控制策略,该策略针对电机转矩正负切换设计一种转矩过零平台,控制过零换向过程。同时使前后电机分轴互补过零,以减少过零次数。通过采用主客观的评价方法,验证该方案有效优化了电动四驱车转矩过零时的驾驶性。The energy recovery of electric vehicle involves motor positive and negative torque switch and zero crossing, and both front and rear axles of dual motor for 4-wheel drive electric vehicle will have zero crossing. Poor torque control will cause driving jitter at zero crossing. In order to optimize the driving jitter caused by double motor zero crossing of pure electric 4-wheel-drive vehicle, alternate axle zero crossing control strategy for a 4-wheel-drive vehicleis designed.In this strategy, a torque zero crossing platform is designed for positive and negative switching of motor torque, and the zerocrossing reversing process is controlled, in the meantime, the front and rear motor axles have complementary zero crossing,to reduce the number of zero crossing. Through the subjective and objective evaluation method, it is verified that the scheme can effectively optimize the drivability of electric 4-wheel-drive vehicle when the torque crosses zero.

关 键 词：四驱控制 分轴过零 电机转矩换向 转矩滤波 整车控制器 

分 类 号：U469.72[机械工程—车辆工程] TM306[交通运输工程—载运工具运用工程]