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arXiv 2406.03641cs.ROcs.AI
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面向真实世界执行的任务与运动规划

Task and Motion Planning for Execution in the Real

Rice University(莱斯大学);Australian National University(澳大利亚国立大学)

Tianyang Pan, Rahul Shome, Lydia E. Kavraki

AI总结:

针对真实环境中知识缺口导致动作难以在规划时完全落实的问题,提出融合离线运动规划与在线闭环行为、并将失败反馈为约束重规划的任务与运动规划框架,真实机器人实验表明其更快、更短且更可靠。

摘要:

任务与运动规划代表了一组强大的混合规划方法,结合了对离散任务域的推理和连续运动生成。传统推理需要任务域模型以及足够的信息,以便将动作落实为运动规划查询。这种知识中的缺口往往源于遮挡或不精确建模等来源。本工作生成的任务与运动计划包含在规划时无法被完全落实的动作。在执行期间,此类动作由所提供的人工设计或学习得到的闭环行为来处理。执行过程将离线规划运动与在线行为相结合,直至达到任务目标。行为失败会作为约束反馈回来,以寻找新的计划。研究进行了四十次真实机器人试验和激励性演示,以评估所提出框架并与最先进方法比较。结果表明,在出现多种缺口的问题中,该框架具有更快的执行时间、更少的动作数量以及更高的成功率。实验数据被共享,供研究人员仿真这些设置。本工作在扩展机器人能够处理的现实部分落实问题的适用类别方面展现出前景。

英文摘要:

Task and motion planning represents a powerful set of hybrid planning methods that combine reasoning over discrete task domains and continuous motion generation. Traditional reasoning necessitates task domain models and enough information to ground actions to motion planning queries. Gaps in this knowledge often arise from sources like occlusion or imprecise modeling. This work generates task and motion plans that include actions cannot be fully grounded at planning time. During execution, such an action is handled by a provided human-designed or learned closed-loop behavior. Execution combines offline planned motions and online behaviors till reaching the task goal. Failures of behaviors are fed back as constraints to find new plans. Forty real-robot trials and motivating demonstrations are performed to evaluate the proposed framework and compare against state-of-the-art. Results show faster execution time, less number of actions, and more success in problems where diverse gaps arise. The experiment data is shared for researchers to simulate these settings. The work shows promise in expanding the applicable class of realistic partially grounded problems that robots can address.

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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