基于效率最优的前后轴式两档电动车转矩分配策略  

The efficiency-optimal torque distribution strategy for front-and-rear-axle-type two-speed-gear electric vehicles

作　　者：徐绍聪 汪选要[1] XU Shaocong;WANG Xuanyao(School of Mechanical Engineering,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学机械工程学院,安徽淮南232001

出　　处：《邵阳学院学报（自然科学版）》2024年第1期18-26,共9页Journal of Shaoyang University：Natural Science Edition

基　　金：安徽省自然科学基金(K1930016)。

摘　　要：针对前后轴式电动两档四驱汽车的转矩分配问题,提出了一种综合效率最优的方法。以综合效率最优为目标,建立整车能量效率数学模型,采用系统效率最优分配的方法,获得整车效率最优扭矩分配系数矩阵。在Avl-Cruise和MATLAB Simulink中建立联合仿真环境,对效率最优扭矩分配模型利用CLTC(中国轻型汽车行驶工况)进行验证。仿真结果表明,与平均分配扭矩策略相比,效率最优分配策略能有效分配前后轴电机转矩,令电机的工作区间处于合适的效率上,使电耗有效降低。A comprehensive efficiency optimal method for torque distribution of front-and-rear-axle-type electric two-speed-gear four-wheel drive vehicles was proposed.To optimize the comprehensive efficiency,optimal as the objective,a mathematical model of vehicle energy efficiency was established.The system efficiency optimal allocation method was used to obtain the vehicle efficiency optimal torque distribution coefficient matrix.Under the joint simulation environment of Avl-Cruise and MATLAB Simulink,the efficiency optimal torque distribution model was verified by using the CLTC cycle.The simulation results show that compared with the average torque distribution strategy,the efficiency optimal distribution strategy can effectively distribute the torque of the front and rear axle motors,ensure a suitable efficiency range of motor,and reduce the power consumption effectively.

关 键 词：电动汽车 转矩分配 两档 

分 类 号：U469.72[机械工程—车辆工程]