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arXiv 2407.05587cs.RO
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Flying Calligrapher:面向空中操作的接触感知运动与力规划及控制

Flying Calligrapher: Contact-Aware Motion and Force Planning and Control for Aerial Manipulation

Carnegie Mellon University(卡内基梅隆大学);School of Computer Science(计算机科学学院);Robotics Institute(机器人研究所);Pennsylvania State University(宾夕法尼亚州立大学);College of Engineering(工程学院)

Xiaofeng Guo, Guanqi He, Jiahe Xu, Mohammadreza Mousaei, Junyi Geng, Sebastian Scherer, Guanya Shi

AI总结:

针对空中操作中时变接触力与切向运动轨迹同步跟踪的问题,提出接触感知轨迹规划器与混合运动-力控制器的流程,通过新型海绵笔末端执行器完成空中书法任务,实现了有效轨迹跟踪与字母绘制。

摘要:

空中操作在完成对人类工人具有挑战性的高空任务(如接触式检查和缺陷检测等)方面引起了关注。以往研究聚焦于维持静态接触点或力。本文针对更通用的动态任务:同时跟踪表面法线方向的时变接触力和切向表面上的运动轨迹。我们提出一个包含接触感知轨迹规划器(用于生成动态可行轨迹)和混合运动-力控制器(用于跟踪此类轨迹)的流程。我们使用新型海绵笔设计作为末端执行器,在一项空中书法任务中演示该方法,其笔画宽度与接触力正相关。此外,我们开发了触摸屏界面以实现灵活的用户输入。实验表明,我们的方法能有效绘制多种字母,IoU达0.59,末端执行器位置(力)跟踪RMSE为2.9厘米(0.7牛)。网站:https://xiaofeng-guo.github.io/flying-calligrapher/

英文摘要:

Aerial manipulation has gained interest in completing high-altitude tasks that are challenging for human workers, such as contact inspection and defect detection, etc. Previous research has focused on maintaining static contact points or forces. This letter addresses a more general and dynamic task: simultaneously tracking time-varying contact force in the surface normal direction and motion trajectories on tangential surfaces. We propose a pipeline that includes a contact-aware trajectory planner to generate dynamically feasible trajectories, and a hybrid motion-force controller to track such trajectories. We demonstrate the approach in an aerial calligraphy task using a novel sponge pen design as the end-effector, whose stroke width is positively related to the contact force. Additionally, we develop a touchscreen interface for flexible user input. Experiments show our method can effectively draw diverse letters, achieving an IoU of 0.59 and an end-effector position (force) tracking RMSE of 2.9 cm (0.7 N). Website: https://xiaofeng-guo.github.io/flying-calligrapher/

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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