摘要
针对自动驾驶汽车测试场景不明确、评价模型主观性强等问题,研究了高速匝道汇入场景下的典型测试场景提取方法和自动驾驶汽车匝道汇入安全性客观评价方法。深入分析了匝道汇入功能场景下的逻辑场景要素,对自然驾驶数据中的自车速度、车间距离、前车车速等逻辑场景要素进行聚类,得到两类典型的匝道汇入测试场景用于自动驾驶汽车的仿真测试。构建多层次自动驾驶汽车评价体系,引入基于自然驾驶数据的核密度估计模型来获取指标最优阈值,建立以最优阈值为参考序列、以层次分析法(AHP)和客观赋权法(CRITIC)为权重输入的灰色关联理评价模型,对自动驾驶汽车在汇入过程中的安全性进行客观评价。评价结果表明:基于核密度估计的灰色关联理论模型评价结果与主观模糊综合分析模型的评价结果相似率达98.01%,验证了客观模型的有效性。
Aiming at the problems such as unclear test scenarios of autonomous vehicle and strong subjectivity of evaluation models,the extraction method of typical test scene and objective evaluation method of autonomous vehicle on-ramp import safety under high-speed on-ramp import scenario were studied.The logical scene elements in ramp import function scenario were analyzed in depth.The logical scene elements in natural driving data,such as speed of the ego vehicle,distance between vehicles and front vehicle speed were clustered,and two typical ramp import test scenarios were obtained to carry out the simulation test of autonomous vehicles.At the same time,a multi-level autonomous vehicle evaluation system was constructed.A kernel density estimation model based on natural driving data was introduced to obtain the optimal threshold of indicators,and a gray relevance theory evaluation model was established with the optimal threshold as the reference sequence and the analytic hierarchy process(AHP)and objective weighting method(CRITIC)as the weight input.Objective evaluation of the safety of autonomous vehicle during the import process was carried out.The evaluation results show that the similarity between the evaluation results of grey correlation theory model based on kernel density estimation and the evaluation results of subjective fuzzy comprehensive analysis model is 98.01%,which verifies the effectiveness of the objective model.
作者
李文礼
李超
李中峰
易帆
李安
LI Wenli;LI Chao;LI Zhongfeng;YI Fan;LI An(Key Laboratory of Automotive Parts Advanced Manufacturing Technology,Ministry of Education,Chongqing University of Technology,Chongqing 400054,China;Chongqing Chang an Automobile Co.,Ltd.,Chongqing 400020,China)
出处
《重庆交通大学学报（自然科学版）》
CAS
CSCD
北大核心
2024年第2期84-91,共8页
Journal of Chongqing Jiaotong University(Natural Science)
基金
重庆市自然科学基金面上项目(cstc2021jcyj-msxmX0183)
重庆市高校创新研究群体项目(CXQT21027)
重庆市教委科学技术研究项目(KJQN202201170)。
关键词
车辆工程
测试评价
客观评价模型
聚类分析
核密度估计
vehicle engineering
test and evaluation
objective evaluation model
cluster analysis
kernel density estimation
