新能源汽车电机节能直接横摆力矩控制研究  

Research on Energy Saving Direct Yaw Moment Control of New Energy Vehicle Motor

作　　者：白栋[1] 蒋丹璐[1] 阮仪[2] BAI Dong;JIANG Dan-lu;RUAN Yi(Chongqing University of Science and Technology,Chongqing 401331,China;Yunnan Agricultural University,Yunnan Kunming 665000,China)

机构地区：[1]重庆科技学院,重庆401331 [2]云南农业大学,云南昆明665000

出　　处：《机械设计与制造》2024年第5期84-87,91,共5页Machinery Design & Manufacture

基　　金：重庆市社会科学规划研究项目(2015WT13)。

摘　　要：为了降低电动汽车在行驶过程中的电机能量消耗,采用直接横摆力矩控制方法,并对车辆的车轮力矩和电机功率变化进行仿真验证。建立了车辆模型简图,根据牛顿第二定律推导出车辆转向运动方程式。针对传统两轮等力矩控制方法进行改进,提出了一种主动直接横摆力矩控制方法,推导出车辆连续行驶和转弯过程中的力矩分配律。利用转弯过程中车辆车轮的力矩变化来调节电机的功率变化,从而降低车辆电机的能量消耗。采用MATLAB软件对车辆横摆角速度、车轮力矩和电机能量消耗进行仿真,与两轮等力矩控制方法进行对比。结果显示:采用两轮等力矩控制方法,车辆横摆角速度跟踪误差较大,车轮力矩变化幅度较小,自适应调节能力较差,导致电机能量消耗较多;采用直接横摆力矩控制方法,车辆横摆角速度跟踪误差较小,车轮力矩变化幅度较大,自适应调节能力较好,使电机能量消耗较少。采用直接横摆力矩控制方法,能够自适应调整车轮力矩的变化,从而达到降低电机能量消耗目的。In order to reduce the energy consumption of electric vehicle motor in the process of driving,the direct yaw moment con-trol method is adopted,and the changes of vehicle wheel torque and motor power are simulated and verified.The vehicle model diagram is established,and the steering motion equation is deduced according to Newton's second law.Aiming at the improve-ment of the traditional two wheel equal torque control method,an active direct yaw moment control method is proposed,and the torque distribution law in the process of continuous driving and turning is derived.In order to reduce the energy consumption of ve-hicle motor,the torque change of vehicle wheel during turning is used to adjust the power change of motor.The vehicle yaw rate,wheel torque and motor energy consumption are simulated by MATLAB software,and compared with two wheel equal torque con-trol method.The results show that:using two wheel equal torque control method,the tracking error of vehicle yaw rate is large,the change range of wheel torque is small,and the adaptive adjustment ability is poor,which leads to more energy consumption of motor;using direct yaw moment control method,the tracking error of vehicle yaw rate is small,the change range of wheel torque is large,and the adaptive adjustment ability is good,which makes the motor energy saving Less consumption.The direct yaw mo-ment control method can adaptively adjust the change of wheel torque,so as to reduce the energy consumption of the motor.

关 键 词：直接横摆力矩控制 新能源汽车 横摆角速度 能量 仿真 

分 类 号：TH16[机械工程—机械制造及自动化] TH137