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arXiv 2203.03017cs.RO
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一个可组合的框架,用于政策设计,学习和转移,以实现安全和有效的工业插入

A Composable Framework for Policy Design, Learning, and Transfer Toward Safe and Efficient Industrial Insertion

Carnegie Mellon University(卡内基梅隆大学)

Rui Chen, Chenxi Wang, Tianhao Wei, Changliu Liu

摘要:

精细的工业插入任务(例如,印制电路板组装)对于工业机器人来说仍然具有挑战性。这些挑战包括低误差容限、组件的精细度以及相对于要插入的组件的大的任务变化。为了为这些插入任务提供可行的机器人解决方案,我们还需要考虑现有机器人系统的硬件限制,并最大限度地减少集成工作。本文提出了一种组合框架,有效地整合现有的机器人平台上的安全插入策略,以完成这些插入任务。该策略具有可解释的模块化设计,可以在硬件上有效地学习,并容易地转移到新的任务。特别地,该策略包括作为用于插入的基线策略的安全插入代理、作为到机器人硬件的接口的最优可配置笛卡尔跟踪器、用于处理组件种类和插入错误的概率推理模块、以及用于优化上述模块中的参数以在指定硬件上实现最佳性能的安全学习模块。UR10机器人上的实验结果表明,该框架实现了安全性(对于组件的精细度),准确性(对于低公差),鲁棒性(对感知错误和组件缺陷),适应性和可移植性(对于任务变化),以及执行期间的任务效率加上学习期间的数据和时间效率。

英文摘要:

Delicate industrial insertion tasks (e.g., PC board assembly) remain challenging for industrial robots. The challenges include low error tolerance, delicacy of the components, and large task variations with respect to the components to be inserted. To deliver a feasible robotic solution for these insertion tasks, we also need to account for hardware limits of existing robotic systems and minimize the integration effort. This paper proposes a composable framework for efficient integration of a safe insertion policy on existing robotic platforms to accomplish these insertion tasks. The policy has an interpretable modularized design and can be learned efficiently on hardware and transferred to new tasks easily. In particular, the policy includes a safe insertion agent as a baseline policy for insertion, an optimal configurable Cartesian tracker as an interface to robot hardware, a probabilistic inference module to handle component variety and insertion errors, and a safe learning module to optimize the parameters in the aforementioned modules to achieve the best performance on designated hardware. The experiment results on a UR10 robot show that the proposed framework achieves safety (for the delicacy of components), accuracy (for low tolerance), robustness (against perception error and component defection), adaptability and transferability (for task variations), as well as task efficiency during execution plus data and time efficiency during learning.

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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