差动再生制动转矩控制的电动汽车稳定性研究  

Research on stability control of four-wheel-motor electric vehicle based on differential braking torque control

作　　者：郑利锋[1] 王明 ZHENG Lifeng;WANG Ming(School of Vehicle Engineering,Changzhou Vocational Institute of Mechatronic Technology,Changzhou 213164,Jiangsu,China;School of Mechanical Engineering,Anhui University of Science and Technology,Huainan 232001,Anhui,China)

机构地区：[1]常州机电职业技术学院车辆工程学院,江苏常州213164 [2]安徽理工大学机械工程学院,安徽淮南232001

出　　处：《中国工程机械学报》2019年第5期461-465,470,共6页Chinese Journal of Construction Machinery

基　　金：安徽省教育厅自然科学研究项目(AQKJ2014B013)

摘　　要：电动机转矩具有响应速度快、精度高等优点,可以用于提高电动汽车(EV)的性能.为了避免刹车或转弯过程中车辆过度转向及转向不足,提高小型四轮电动机电动汽车的稳定性,提出了差动再生制动力矩控制方法,以差动滑移率值为依据单独控制每个车轮的再生制动力矩.当滑移率大于最佳值时,再生制动器关闭,电动机不产生再生制动力矩;当滑移率低于最佳值时,再生制动器开启,电动机产生再生制动力矩.为验证所提出控制模型的有效性,设置左侧轮胎路面为结冰道路,右侧轮胎为干沥青路面.仿真结果表明:差动再生制动力矩控制可以防止轮胎抱死,避免车辆打滑.Motor torque has the advantages of fast response and high accuracy,which can be used to improve the performance of electric vehicle (EV).In order to avoid excessive steering and lack of steering in the process of braking or turning,the stability of the small four wheel motor electric vehicle is improved.A differential regenerative braking torque control method is proposed,and the regenerative braking torque of each wheel is controlled on the basis of the differential slip rate value.When the slip ratio is greater than the best value,the regenerative brake is closed and the motor does not produce regenerative braking torque.When the slip rate is lower than the optimum value,the regenerative brake is opened and the motor produces regenerative braking torque.In order to verify the effectiveness of the proposed control model,the left tire road is set as ice road and the right tire as dry asphalt road.The simulation results show that differential regenerative braking torque control can prevent types from locking and avoid vehicle skidding.

关 键 词：四轮电机 电动汽车 差动式制动 滑移率 稳定性 

分 类 号：U469.7[机械工程—车辆工程]