汽车与电动两轮车碰撞典型场景下的AEB纵横向触发策略研究  

Research on AEB Longitudinal and Transverse Triggering Strategy in Typical Scenarios of Vehicle to Electric Two-Wheelers Collisions

作　　者：韩勇 袁小宾 卢明 谈笑天 Han Yong;Yuan Xiaobin;Lu Ming;Tan Xiaotian(School of Mechanical and Automotive Engineering,Xiamen University of Technology,Xiamen 361024;Fujian Institute of New Energy Vehicle and Safety Technology,Xiamen 361024)

机构地区：[1]厦门理工学院机械与汽车工程学院,厦门361024 [2]福建省新能源汽车与安全技术研究院,厦门361024

出　　处：《汽车工程》2023年第3期501-509,共9页Automotive Engineering

基　　金：国家自然科学基金面上项目(51775466);福建省财政厅专项(闽财教指)([2021]103号)资助。

摘　　要：在汽车与电动两轮车碰撞事故中,自动紧急制动(autonomous emergency breaking,AEB)系统的横向触发固定宽度是避撞失效的重要因素之一。为了提高汽车AEB系统的避撞可靠性,本文在分析了汽车与电动两轮车碰撞临界工况的纵横向TTC(time to collision)差值范围的基础上,建立了AEB纵横向触发TTC差值模型。基于PreScan、Matlab/Simulink和CarSim仿真平台建立2种典型的汽车碰撞电动两轮车事故场景,并与横向触发宽度固定为1.75和3.75 m的AEB策略对比。结果表明:提出的AEB纵横向触发TTC差值模型在避撞率中表现更优,在汽车速度低于54 km/h时均能实现避撞。在典型场景1中避撞率为88.9%(45例),未避撞事故碰撞平均速度从70.6下降到29.7 km/h;在典型场景2中避撞率为80%(30例),未避撞事故汽车平均碰撞速度从66降低为18.2 km/h。AEB纵横向触发TTC差值模型具有良好的可靠性和鲁棒性,提高了汽车与电动两轮车道路安全性,为汽车主动安全系统开发提供重要理论参考。The transverse trigger fixation width of the autonomous emergency breaking(AEB)system is one of the important factors for collision avoidance failure in the collision accident between automobiles and electric two-wheeled vehicles.In order to improve the collision avoidance reliability of the AEB system,this paper establishes an AEB longitudinal and transverse trigger TTC difference model based on the analysis of the longitudinal and transverse TTC(Time to collision)difference range of the critical conditions of the collision between an automobile and an electric two-wheeled vehicle.Based on PreScan,Matlab/Simulink and CarSim simulation platforms,two typical collision accident scenarios between cars and electric two-wheelers are established and compared with the AEB strategies with fixed transverse trigger widths of 1.75 and 3.75 m.The results show that the proposed AEB longitudinal and transverse triggering TTC difference model performs better in collision avoidance rate and can achieve collision avoidance at vehicle speeds below 54 km/h.In typical scenario 1,the crash avoidance rate is 88.9%(45 cases),and the average crash speed of unavoidable crashes decreases from 70.6 to 29.7 km/h.In typical scenario 2,the crash avoidance rate is 80%(30 cases),and the average crash speed of unavoidable crashes decreases from 66 to 18.2 km/h.The AEB longitudinal-triggering TTC differential model has good reliability and robustness,improves road safety of cars and electric two-wheelers,and provides an important theoretical reference for the development of automotive active safety systems.

关 键 词：汽车碰撞事故 电动两轮车 纵横向触发TTC差值模型 AEB 碰撞典型场景 

分 类 号：U463.5[机械工程—车辆工程] U491.31[交通运输工程—载运工具运用工程]