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arXiv 1907.04877eess.SYcs.SY
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短期ASV与静态和移动障碍物的避碰

Short-term ASV Collision Avoidance with Static and Moving Obstacles

Bjørn-Olav H. Eriksen, Morten Breivik

摘要:

本文考虑碰撞避免(COLAV)的静态和移动障碍物使用分支过程模型预测控制(BC-MPC)算法,这是专为使用自主水面车辆(ASV)。BC-MPC算法最初只考虑了运动障碍物的COLAV,为了使算法也能避开静态障碍物,我们在目标函数中引入了一个基于占有网格的额外项。此外,对算法进行了其他改进,从而产生具有较少摆动的轨迹。通过在挪威特隆赫姆峡湾进行的虚拟静态障碍物和物理移动障碍物的全尺寸实验,验证了改进后的算法。基于雷达的跟踪系统用于检测和跟踪移动障碍物,这使得该算法能够避免障碍物,而不依赖于船到船的通信。实验表明,该算法能够同时避免静态和移动障碍物,同时提供清晰和易于观察的机动。BC-MPC算法符合《国际海上避碰规则》(COLREG)的规则8、13和17,并有利于遵循规则14和15的机动。

英文摘要:

This article considers collision avoidance (COLAV) for both static and moving obstacles using the branching-course model predictive control (BC-MPC) algorithm, which is designed for use by autonomous surface vehicles (ASVs). The BC-MPC algorithm originally only considered COLAV of moving obstacles, so in order to make the algorithm also be able to avoid static obstacles, we introduce an extra term in the objective function based on an occupancy grid. In addition, other improvements are made to the algorithm resulting in trajectories with less wobbling. The modified algorithm is verified through full-scale experiments in the Trondheimsfjord in Norway with both virtual static obstacles and a physical moving obstacle. A radar-based tracking system is used to detect and track the moving obstacle, which enables the algorithm to avoid obstacles without depending on vessel-to-vessel communication. The experiments show that the algorithm is able to simultaneously avoid both static and moving obstacles, while providing clear and readily observable maneuvers. The BC-MPC algorithm is compliant with rules 8, 13 and 17 of the the International Regulations for Preventing Collisions at Sea (COLREGs), and favors maneuvers following rules 14 and 15.

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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