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arXiv 2402.16993eess.SYcs.SY
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面向自动驾驶车辆的分层速度规划器:混合自主交通中拉格朗日可变限速框架

Hierarchical Speed Planner for Automated Vehicles: A Framework for Lagrangian Variable Speed Limit in Mixed Autonomy Traffic

Han Wang, Zhe Fu, Jonathan Lee, Hossein Nick Zinat Matin, Arwa Alanqary, Daniel Urieli, Sharon Hornstein, Abdul Rahman Kreidieh, Raphael Chekroun, William Barbo… 展开作者

Han Wang, Zhe Fu, Jonathan Lee, Hossein Nick Zinat Matin, Arwa Alanqary, Daniel Urieli, Sharon Hornstein, Abdul Rahman Kreidieh, Raphael Chekroun, William Barbour, William A. Richardson, Dan Work, Benedetto Piccoli, Benjamin Seibold, Jonathan Sprinkle, Alexandre M. Bayen, Maria Laura Delle Monache

AI总结:

本文提出分层速度规划器框架,通过服务器端Speed Planner与车辆端控制器协同实现混合交通中的拉格朗日可变限速,并在100辆自动驾驶车辆实测中显著提升瓶颈吞吐量、降低速度波动。

摘要:

本文提出了一种新颖的控制框架,用于在混合交通流环境中利用自动驾驶车辆(AVs)实现拉格朗日可变限速。该框架通过一支由100辆网联自动驾驶车辆组成的车队进行了验证,这是迄今为止规模最大的旨在平滑交通流的协调开放道路测试。该框架包含两个主要组成部分:部署在服务器端的高层控制器,称为Speed Planner,以及部署在车辆端的低层控制器,称为车辆控制器。Speed Planner基于实时交通状态估计(TSE)[1]为车辆控制器设计并更新目标速度。Speed Planner由两个模块组成:TSE增强模块和目标速度设计模块。TSE增强模块旨在最小化接收到的交通信息中固有延迟的影响,并提高输入交通数据的空间和时间分辨率。目标速度设计模块生成目标速度曲线,以改善交通流为目标。车辆控制器被设计为在跟踪目标速度的同时对周围情况做出响应。数值仿真表明了所提方法的性能:瓶颈吞吐量提高了5.01%,速度标准差显著降低了34.36%。我们进一步展示了一项运营研究,描述了该控制器如何在100辆自动驾驶车辆的实地测试中实现及其对交通流的综合影响。

英文摘要:

This paper introduces a novel control framework for Lagrangian variable speed limits in hybrid traffic flow environments utilizing automated vehicles (AVs). The framework was validated using a fleet of 100 connected automated vehicles as part of the largest coordinated open-road test designed to smooth traffic flow. The framework includes two main components: a high-level controller deployed on the server side, named Speed Planner, and low-level controllers called vehicle controllers deployed on the vehicle side. The Speed Planner designs and updates target speeds for the vehicle controllers based on real-time Traffic State Estimation (TSE) [1]. The Speed Planner comprises two modules: a TSE enhancement module and a target speed design module. The TSE enhancement module is designed to minimize the effects of inherent latency in the received traffic information and to improve the spatial and temporal resolution of the input traffic data. The target speed design module generates target speed profiles with the goal of improving traffic flow. The vehicle controllers are designed to track the target speed meanwhile responding to the surrounding situation. The numerical simulation indicates the performance of the proposed method: the bottleneck throughput has increased by 5.01%, and the speed standard deviation has been reduced by a significant 34.36%. We further showcase an operational study with a description of how the controller was implemented on a field-test with 100 AVs and its comprehensive effects on the traffic flow.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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