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arXiv 2402.02457cs.RO
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越野环境下无人地面车辆的风险感知规划框架

A Risk-aware Planning Framework of UGVs in Off-Road Environment

School of Vehicle and Mobility, Tsinghua University(清华大学车辆与 mobility学院);Lab of Intelligent and Connected Vehicles, Tsinghua University(清华大学智能网联车辆实验室)

Junkai Jiang, Zhenhua Hu, Zihan Xie, Changlong Hao, Hongyu Liu, Wenliang Xu, Yuning Wang, Lei He, Shaobing Xu, Jianqiang Wang

AI总结:

本文提出一种融合风险评估的全局-局部规划框架,包含Coarse2fine A*全局算法和确定性采样局部方法,仿真显示安全性较基线提升约30%,并在真实UGV系统上验证了有效性。

摘要:

规划模块是智能车辆研究的重要组成部分。本文通过一个全局-局部规划框架来解决无人地面车辆的风险感知规划问题,该框架无缝集成了风险评估方法。具体而言,提出了一种名为Coarse2fine A*的全局规划算法,该算法结合势场方法,在确保算法效率的同时增强规划结果的安全性。利用并改进了一种确定性采样方法用于局部规划,以适应越野环境。该方法还集成了风险评估模型,以强调对局部风险的规避。通过仿真实验与基线算法进行比较,验证了算法的性能,结果表明Coarse2fine A*的结果比基线算法安全约30%。通过将所提出的规划框架部署在由控制中心和实际UGV平台组成的真实系统上,验证了其实用性和有效性。

英文摘要:

Planning module is an essential component of intelligent vehicle study. In this paper, we address the risk-aware planning problem of UGVs through a global-local planning framework which seamlessly integrates risk assessment methods. In particular, a global planning algorithm named Coarse2fine A* is proposed, which incorporates a potential field approach to enhance the safety of the planning results while ensuring the efficiency of the algorithm. A deterministic sampling method for local planning is leveraged and modified to suit off-road environment. It also integrates a risk assessment model to emphasize the avoidance of local risks. The performance of the algorithm is demonstrated through simulation experiments by comparing it with baseline algorithms, where the results of Coarse2fine A* are shown to be approximately 30% safer than those of the baseline algorithms. The practicality and effectiveness of the proposed planning framework are validated by deploying it on a real-world system consisting of a control center and a practical UGV platform.

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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