基于城市干道十字路口场景下的纯电动汽车多目标优化研究  

Study on Multi-Objective Optimization of Pure Electric Vehicles at Intersection of Urban Arterial Road

作　　者：褚观耀 程前 吴文文 邵毅明[2] 蒋工亮[2] CHU Guanyao;CHENG Qian;WU Wenwen;SHAO Yiming;JANG Gongliang(China Automotive Engineering Research Institute Co.,Ltd.,Chongqing 401122,China;School of Traffic&Transportation,Chongqing Jiaotong University,Chongqing 400074,China)

机构地区：[1]中国汽车工程研究院股份有限公司,重庆401122 [2]重庆交通大学交通运输学院,重庆400074

出　　处：《重庆理工大学学报（自然科学）》2020年第2期47-56,共10页Journal of Chongqing University of Technology：Natural Science

基　　金：国家重点研发计划项目(2016YFB0100905)

摘　　要：基于城市双向六车道十字路口的场景下对某款纯电动汽车的9种运行轨迹进行分析,研究其安全性、节能性和舒适性等问题。首先建立纯电动汽车安全、节能和舒适多目标模型,对车速、加速度、总加权加速度均方根等条件进行约束;再利用含有精英策略的NSGA-Ⅱ算法对车速、加速度、总加权加速度均方根值等约束条件下进行优化求解,得到Pareto最优解;最后结合Advisor中的欧洲驱动工况NEDC仿真验证纯电动汽车多目标优化模型的准确性。结果表明:目标函数兼顾了纯电动汽车安全性、节能性和舒适性等因素,得到了纯电动汽车在双向六车道十字路口下的最优运行轨迹和最佳道路宽度。本研究不仅弥补了纯电动汽车在城市干道十字路口场景的学术空白,还为纯电动汽车在安全性、经济性、舒适性的通行方面提供了理论依据和参考。Under the limitation of its quality and performance,pure electric vehicle is of great significance for studying how to improve the performance of pure electric vehicle. This paper analyzed nine kinds of running tracks of a pure electric vehicle based on the scene of the six-lane intersection in the city,and studied its safety,energy saving,and comfort. Firstly,by establishing the safety,energy saving and comfort multi-objective model of pure electric vehicle,the conditions of speed,acceleration and total weighted acceleration mean square root were restrained. NSGA-Ⅱ algorithm with elite strategy was used to optimize the solution under the constraints of speed,acceleration and total weighted acceleration mean square root value,and the optimal solution of Pareto was obtained.Finally,the accuracy of multi-objective optimization model of pure electric vehicle was verified by simulation with NEDC( New European Driving Cycle) in Advisor. The results showed that the objective function took into account the safety,energy saving and comfort of pure electric vehicle,and got the optimal running trajectory and the optimum road width of pure electric vehicle under the twoway six-lane intersection. Therefore,this paper not only made up for academic gaps,but also provided theoretical basis and reference for pure electric vehicles in terms of safe,economical and comfortable passage.

关 键 词：十字路口 纯电动汽车 多目标优化 Advisor仿真 NSGA-Ⅱ算法 

分 类 号：U471.1[机械工程—车辆工程]