分布式四驱电动汽车多目标优化转矩分配策略  

Multi-objective Optimal Torque Distribution Strategyfor Distributed Four-wheel Drive Electric Vehicles

作　　者：赵璇 缪仲翠[1] 毛元 ZHAO Xuan;MIAO Zhongcui;MAO Yuan(School of Automation and Electrical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;State Grid Nanjing Jiangbei New Area Power Supply Company,Nanjing 211800,China)

机构地区：[1]兰州交通大学自动化与电气工程学院,兰州730070 [2]国网南京市江北新区供电公司,南京211800

出　　处：《兰州交通大学学报》2023年第4期73-79,90,共8页Journal of Lanzhou Jiaotong University

摘　　要：为了降低分布式四驱电动汽车整车能耗,提升突发转向稳定性,提出一种多目标优化转矩分配策略。首先,推导整车动力学模型,利用数学模型构建整车前向仿真平台;然后,分别对整车能耗及稳定性进行分析,构建降低整车能耗、提升整车稳定性的多目标优化转矩分配策略,利用多目标权重系数法得出转矩分配结果;最后,将转矩分配结果应用于整车前向仿真模型,结合欧洲循环工况对不同转矩分配方案进行仿真对比分析。仿真结果表明:在车辆行驶过程中,采用多目标优化转矩分配策略,系统能耗降低了26.6%,系统运行稳定性提升了26.1%,同时整车续航能力延长了0.5%。In order to reduce the energy consumption of distributed four-wheel drive electric vehicles and improve the stability of sudden steering,a multi-objective optimal torque allocation strategy is proposed.Firstly,the vehicle dynamics model is derived,and the vehicle forward simulation platform is built by using the mathematical model;Then,the energy consumption and stability of the whole vehicle are analyzed respectively,and a multi-objective optimization torque allocation strategy is constructed to reduce the energy consumption and improve the stability of the whole vehicle.The torque allocation results are obtained by using the multi-objective weight coefficient method;Finally,the torque distribution results are applied to the forward simulation model of the whole vehicle,and different torque distribution schemes are simulated and compared according to the European cycle conditions.The results show that the system energy consumption is reduced by 26.6%,the system operation stability is improved by 26.1%and the vehicle endurance is extended by 0.5%by using the multi-objective optimization torque allocation strategy during the vehicle driving process.

关 键 词：分布式驱动 电动汽车 多目标转矩分配策略 能耗最优 

分 类 号：U469.722[机械工程—车辆工程]