摘要
为提高四轮独立驱动电动汽车(4WIDEV)行驶中的稳定性,提出以优化轮胎负荷率为目的,应用二次规划理论的驱动力矩分配方法。设计驱动力矩控制策略,对比规则分配、优化规则分配与二次规划分配方法,在CarSim与Simulink联合仿真平台中建立4WIDEV整车模型,选取方向盘转角为增幅正弦信号的工况、加速单移线工况,将二次规划分配方法与优化后的规则分配方法进行对比实验。结果表明:采用二次规划理论的驱动力矩分配方法能够更好地降低轮胎负荷率,有效提升轮胎的稳定裕度,进一步提高车辆行驶的安全性。
This research aims to improve the stability of four-wheel independent drive electric vehicles(4 WIDEV) during driving.A method of driving torque distribution based on the quadratic programming theory is proposed for the purpose of optimizing the tire load index.The driving torque control strategy is designed.The rule distribution, the optimization rule distribution and the quadratic programming distribution method are listed and compared.The 4 WIDEV model is established in the CarSim and Simulink co-simulation platform, and the steering wheel angle is selected as the working condition of the amplified sinusoidal signal and the variable speed single shifting working condition, and the secondary planning distribution method is compared with the optimized regular distribution method.The results show that the driving torque distribution method using the quadratic programming theory can better reduce the tire load index, effectively improve the stability margin of the tire, and further improve the safety of the vehicle.
作者
朱文静
李刚
姬晓
ZHU Wenjing;LI Gang;JI Xiao(College of Automobile and Traffic Engineering,Liaoning University of Technology,Jinzhou 121001,China)
出处
《重庆理工大学学报（自然科学）》
CAS
北大核心
2022年第3期41-47,共7页
Journal of Chongqing University of Technology：Natural Science
基金
国家自然科学基金面上项目(51675257)
辽宁省科技厅重大研发计划(207106020)。
关键词
四轮独立驱动
电动汽车
驱动力矩
二次规划
轮胎负荷率
four-wheel independent drive
electric vehicle
driving torque
quadratic programming
tire load index
