arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2406.01587cs.RO
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PlanAgent:一种用于闭环车辆运动规划的多模态大语言模型智能体

PlanAgent: A Multi-modal Large Language Agent for Closed-loop Vehicle Motion Planning

Institute of Automation, Chinese Academy of Sciences(中国科学院自动化研究所);School of Artificial Intelligence, University of Chinese Academy of Sciences(中国科学院大学人工智能学院);Beijing University of Posts and Telecommunications(北京邮电大学);School of Mechanical Engineering and Automation, Beihang University(北京航空航天大学);Department of Computer Science and Technology, Tsinghua University(清华大学计算机科学与技术系);Li Auto(理想汽车)

Yupeng Zheng, Zebin Xing, Qichao Zhang, Bu Jin, Pengfei Li, Yuhang Zheng, Zhongpu Xia, Kun Zhan, Xianpeng Lang, Yaran Chen, Dongbin Zhao

AI总结:

针对现有规则和学习方法在自动驾驶闭环规划中的泛化与性能局限,提出基于多模态大语言模型的PlanAgent系统,通过环境转换、推理引擎和反思模块引入常识推理,在nuPlan基准上取得SOTA。

摘要:

车辆运动规划是自动驾驶技术的核心组成部分。当前基于规则的车辆运动规划方法在常见场景中表现良好,但难以泛化到长尾场景。同时,在闭环大规模场景中,基于学习的方法尚未取得优于基于规则方法的性能。为了解决这些问题,我们提出了PlanAgent,这是首个基于多模态大语言模型(MLLM)的mid-to-mid规划系统。MLLM被用作认知智能体,将类人知识、可解释性和常识推理引入闭环规划中。具体而言,PlanAgent通过三个核心模块利用MLLM的能力。首先,环境转换模块从环境中构建鸟瞰图(BEV)地图和基于车道图的文本描述作为输入。其次,推理引擎模块引入从场景理解到横向和纵向运动指令的分层思维链,最终生成规划器代码。最后,集成了反思模块来模拟和评估生成的规划器,以减少MLLM的不确定性。PlanAgent具备了MLLM的常识推理和泛化能力,使其能够有效应对常见和复杂的长尾场景。我们提出的PlanAgent在大规模且具挑战性的nuPlan基准上进行了评估。大量实验令人信服地证明,PlanAgent在闭环运动规划任务中超越了现有的最先进方法。代码即将发布。

英文摘要:

Vehicle motion planning is an essential component of autonomous driving technology. Current rule-based vehicle motion planning methods perform satisfactorily in common scenarios but struggle to generalize to long-tailed situations. Meanwhile, learning-based methods have yet to achieve superior performance over rule-based approaches in large-scale closed-loop scenarios. To address these issues, we propose PlanAgent, the first mid-to-mid planning system based on a Multi-modal Large Language Model (MLLM). MLLM is used as a cognitive agent to introduce human-like knowledge, interpretability, and common-sense reasoning into the closed-loop planning. Specifically, PlanAgent leverages the power of MLLM through three core modules. First, an Environment Transformation module constructs a Bird's Eye View (BEV) map and a lane-graph-based textual description from the environment as inputs. Second, a Reasoning Engine module introduces a hierarchical chain-of-thought from scene understanding to lateral and longitudinal motion instructions, culminating in planner code generation. Last, a Reflection module is integrated to simulate and evaluate the generated planner for reducing MLLM's uncertainty. PlanAgent is endowed with the common-sense reasoning and generalization capability of MLLM, which empowers it to effectively tackle both common and complex long-tailed scenarios. Our proposed PlanAgent is evaluated on the large-scale and challenging nuPlan benchmarks. A comprehensive set of experiments convincingly demonstrates that PlanAgent outperforms the existing state-of-the-art in the closed-loop motion planning task. Codes will be soon released.

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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