arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2602.13159cs.RO
收藏

时间采样的高效自适应状态格子用于部分观测环境中的自主地面机器人导航

Temporally-Sampled Efficiently Adaptive State Lattices for Autonomous Ground Robot Navigation in Partially Observed Environments

University of Rochester(罗切斯特大学);DEVCOM Army Research Lab(陆军研究实验室);Parsons Corporation(帕尔逊公司)

Ashwin Satish Menon, Eric R. Damm, Eli S. Lancaster, Felix A. Sanchez, Jason M. Gregory, Thomas M. Howard

AI总结:

本文提出TSEASL,一种用于部分观测环境的自主地面机器人导航方法,通过自适应状态格子提升规划稳定性,减少手动干预需求。

摘要:

由于传感器限制,越野移动机器人所处的环境通常只能部分观测。随着机器人在环境中移动并接近目标,最佳路径会随着传感器获取的新信息而不断修订。在传统自主导航架构中,区域运动规划器会消耗环境地图并输出轨迹供局部运动规划器使用。由于区域计划指导因地图信息的变化而持续修订,传递给局部规划器的参考轨迹在连续规划周期中可能会有显著差异。这种迅速变化的指导可能会导致不安全的导航行为,通常需要在越野环境中自主穿越时进行手动安全干预。为了解决这个问题,我们提出了时间采样的高效自适应状态格子(TSEASL),这是一种考虑了先前生成轨迹的更新和优化版本与当前生成轨迹的区域规划器仲裁架构。当在Clearpath Robotics Warthog无人驾驶地面车辆以及从Warthog收集的现实地图数据上测试时,结果表明,运行TSEASL时,机器人在相同位置不需要手动干预,而运行基线规划器时则需要。此外,TSEASL在规划器稳定性方面比基线更高。本文最后讨论了进一步改进TSEASL,以使其更通用化,适用于各种越野自主场景。

英文摘要:

Due to sensor limitations, environments that off-road mobile robots operate in are often only partially observable. As the robots move throughout the environment and towards their goal, the optimal route is continuously revised as the sensors perceive new information. In traditional autonomous navigation architectures, a regional motion planner will consume the environment map and output a trajectory for the local motion planner to use as a reference. Due to the continuous revision of the regional plan guidance as a result of changing map information, the reference trajectories which are passed down to the local planner can differ significantly across sequential planning cycles. This rapidly changing guidance can result in unsafe navigation behavior, often requiring manual safety interventions during autonomous traversals in off-road environments. To remedy this problem, we propose Temporally-Sampled Efficiently Adaptive State Lattices (TSEASL), which is a regional planner arbitration architecture that considers updated and optimized versions of previously generated trajectories against the currently generated trajectory. When tested on a Clearpath Robotics Warthog Unmanned Ground Vehicle as well as real map data collected from the Warthog, results indicate that when running TSEASL, the robot did not require manual interventions in the same locations where the robot was running the baseline planner. Additionally, higher levels of planner stability were recorded with TSEASL over the baseline. The paper concludes with a discussion of further improvements to TSEASL in order to make it more generalizable to various off-road autonomy scenarios.

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。

↑