基于安全势场的超车模型研究  

Research on Overtaking Model Based on Safety Potential Field

作　　者：张小丽[1] 傅永腾 喻言 古剑 杨玉婷 魏怡琳 ZHANG Xiaoli;FU Yongteng;YU Yan;GU Jian;YANG Yuting;WEI Yilin(College of Civil and Transportation Engineering,Hohai University,Nanjing Jiangsu 210098,China)

机构地区：[1]河海大学土木与交通学院,江苏南京210098

出　　处：《交通节能与环保》2022年第6期49-54,共6页Transport Energy Conservation & Environmental Protection

基　　金：国家自然科学基金(51608171);江苏省自然科学基金(BK20211203)。

摘　　要：汽车的超车行为是常见的交通行为之一。在未来车路协同的背景下,实时获取的车辆数据可以提高车辆在超车过程中的安全性能。本文建立了车路协同背景下更符合实际情形的超车模型。首先分析了超车的全过程,然后分析了不同速度、加速度、转向角下车辆的势场分布,并分析了缓慢型、正常型和急躁型三种驾驶员性格对安全势场的影响,在此基础上建立了基于安全势场的超车模型。最后对模型进行了数值分析,得到了驾驶员类型、超车距离和时间与被超车辆速度的关系。Car’s overtaking behavior is one of the common traffic behaviors.Real-time vehicle data can enhance the safety performance of cars in the process of overtaking in the context of future vehicle-road collaboration.This study establishes a more realistic overtaking model against the backdrop of vehicle-road interaction,analyzes the whole overtaking process,and investigates the distribution of the vehicle potential field under different speed,acceleration,and steering angle conditions,as well as the influence of slow,normal,and impatient driver characteristics on the safety potential field.The overtaking model is built based on the safety potential field.Finally,we run the model numerically to determine the link between the driver type,overtaking distance and duration,and the speed of the car being overtaken.

关 键 词：安全势场 最小安全距离 超车模型 数值分析 

分 类 号：U491[交通运输工程—交通运输规划与管理]