摘要
自动驾驶车辆所面临的安全风险不仅来自于功能安全和信息安全不足,还来自于自动驾驶系统内部的预期功能安全(safety of the intended functionality,SOTIF)不足的风险。自动紧急制动(automatic emergency braking,AEB)系统作为自动驾驶系统的重要组成部分,在控制策略层面存在SOTIF不足的风险。采用系统理论过程分析的方法对AEB系统进行安全分析,找出可能引发危害的触发事件并提出相应的安全目标。针对安全目标,提出一种基于细分场景的AEB系统控制策略。在CarSim-MATLAB/Simulink环境下对所提出的AEB系统控制策略进行验证。结果表明,在事件接受准则和总体风险接受准则两个层面上功能修改后的系统风险水平均显著降低,系统的安全水平明显提升。
The safety risks the autonomous vehicles face not only come from the deficiencies of functional safety and information safety,but also stem from the insufficiencies of the safety of the intended functionality(SOTIF).As an important part of autonomous driving system,the automatic emergency braking(AEB)system has SOTIF insufficiencies in control strategies.In this paper,the system theoretical process analysis method is adopted to analyze the safety of AEB system,find out the trigger events that may cause harm and put forward the corresponding safety objectives.Aiming at the safety objectives,a control strategy for AEB system based on detailed scenes are proposed.The control strategy proposed for AEB system is then verified in CarSim-MATLAB/Simulink environment.The results show that after functional corrections in both the event acceptance criterion and total risk acceptance criterion,the risk level of the system becomes much lower and the safety level of the system is apparently enhanced.
作者
段顺昌
白先旭
石琴
李维汉
何冠男
Duan Shunchang;Bai Xianxu;Shi Qin;Li Weihan;He Guannan(Engineering Research Center for Intelligent Transportation and Cooperative Vehicle-Infrastructure of Anhui Province,Hefei 230009;Laboratory for Adaptive Structures and Intelligent Systems(LASIS),Department of Vehicle Engineering,Hefei University of Technology,Hefei 230009)
出处
《汽车工程》
EI
CSCD
北大核心
2022年第9期1305-1317,1338,共14页
Automotive Engineering
基金
安徽省新能源汽车暨智能网联汽车创新工程项目(JZ2021AFKJ00002)资助。
