收稿日期: 2022-08-01
网络出版日期: 2023-08-15
基金资助
陕西省教育厅2021年度科学研究计划项目(21JZ005);陕西省社会科学基金资助项目(2021R025);陕西省自然科学基础研究计划项目(2021JQ-239)
Management Method of Autonomous Vehicles and Pedestrians at Intersections Based on Maximum Pressure Controls
Received date: 2022-08-01
Online published: 2023-08-15
Supported by
the 2021 Scientific Research Program of Shaanxi Provincial Department of Education(21JZ005);the Shaanxi Provincial Social Science Foundation Program(2021R025);the 2021 Shaanxi Provincial Natural Science Basic Research Program(2021JQ-239)
为提高交叉口自动驾驶汽车和行人的管理水平,进而改善交通流的运行效率和稳定性,文中基于最大压强控制和自动驾驶汽车轨迹规划方法构建了交叉口自动驾驶汽车和行人管理方法。首先,综合考虑行人到达率、人行横道尺寸、等待时间和行人到达分布规律等对行人的影响,利用概率分布函数对行人排队长度进行建模,并利用估计的行人排队长度,基于最大压强控制方法构建了交叉口自动驾驶汽车和行人排队长度管理方法;然后,为帮助交叉口内部自动驾驶汽车避免碰撞并获取最佳运动轨迹,结合最大压强控制方法与已有交叉口自动驾驶汽车轨迹规划方法,在控制交叉口自动驾驶汽车和行人排队长度的基础上,同时对自动驾驶汽车轨迹进行规划;最后,利用Python联合SUMO开源交通仿真软件对模型进行验证,仿真持续2 h。仿真结果表明,在不同自动驾驶汽车和行人需求条件下,该自动驾驶汽车和行人管理方法的加入不仅能够实现对自动驾驶汽车运动轨迹的规划控制,而且能够迅速稳定和降低它们的延误与排队长度,并能改善交叉口运行效率。
曹宁博, 赵利英 . 基于最大压强控制的交叉口自动驾驶汽车和行人管理方法[J]. 华南理工大学学报(自然科学版), 2024 , 52(2) : 124 -135 . DOI: 10.12141/j.issn.1000-565X.220489
In order to improve the management level of autonomous vehicles and pedestrians at intersections, and thus improve the operational efficiency and stability of traffic flow, the paper constructed a management method for autonomous vehicles and pedestrians at intersections based on maximum pressure control and autonomous vehicle trajectory planning methods. Firstly, the queue length of pedestrians was modeled by the probability distribution function and comprehensively considering the influence of arrival rate, crosswalk length and width, waiting time and arrival distribution on pedestrians. Based on the estimated pedestrian queue length, the maximum pressure control was adopted to develop a queuing length management method for autonomous vehicles and pedestrians at intersections. Then, in order to help the internal autonomous vehicles at the intersection avoid collisions and obtain the best movement trajectory, the maximum pressure control method and the trajectory planning method of the existing intersection were planned on the basis of controlling the queue length of the self-driving vehicles and pedestrians at the intersection. Finally, Python and SUMO, which is an open source traffic simulation software, were used to verify the model. The simulation lasts for 2 hours. The simulation results show that the proposed autonomous car and pedestrian management method can not only control the trajectory of autonomous vehicles, but also quickly stabilize and reduce their delay and queuing lengths, and improve the efficiency of intersection operation.
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