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arXiv 2409.13620cs.RO
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子装配体到完整装配体:通过基于图的强化学习实现有效的装配序列规划

Subassembly to Full Assembly: Effective Assembly Sequence Planning through Graph-based Reinforcement Learning

King Abdullah University of Science and Technology (KAUST)(阿卜杜拉国王科技大学)

Chang Shu, Anton Kim, Shinkyu Park

AI总结:

本文提出 S2A 装配序列规划框架,采用基于图的强化学习与延迟奖励策略训练图注意力网络,有效解决零件数量增加导致的组合爆炸问题,并在仿真和真实机器人场景中验证了其有效性。

摘要:

本文提出了一种名为 Subassembly to Assembly (S2A) 的装配序列规划框架。该框架旨在利用物体操作动作,使机械臂能够按照预定结构组装多个零件。主要技术挑战在于,随着零件数量的增加,识别可行装配序列的复杂性呈指数级增长。为解决这一问题,我们引入了一种基于图的强化学习方法,其中使用延迟奖励分配策略训练图注意力网络。在该策略中,仅当装配动作有助于成功完成装配任务时才分配奖励。我们通过基于物理的仿真验证了该框架的性能,并将其与各种基线进行比较,以强调所提出的奖励分配方法的重要性。此外,我们展示了在真实世界机器人装配场景中部署该框架的可行性。

英文摘要:

This paper proposes an assembly sequence planning framework, named Subassembly to Assembly (S2A). The framework is designed to enable a robotic manipulator to assemble multiple parts in a prespecified structure by leveraging object manipulation actions. The primary technical challenge lies in the exponentially increasing complexity of identifying a feasible assembly sequence as the number of parts grows. To address this, we introduce a graph-based reinforcement learning approach, where a graph attention network is trained using a delayed reward assignment strategy. In this strategy, rewards are assigned only when an assembly action contributes to the successful completion of the assembly task. We validate the framework's performance through physics-based simulations, comparing it against various baselines to emphasize the significance of the proposed reward assignment approach. Additionally, we demonstrate the feasibility of deploying our framework in a real-world robotic assembly scenario.

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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