arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.00544cs.ROcs.LG
收藏

人机工程学先验知识在人机任务转移中的应用

Exploiting Ergonomic Priors in Human-to-Robot Task Transfer

Centre for Robotics Research, Department of Engineering, King’s College London(伦敦国王学院工程系机器人研究中心)

Jeevan Manavalan, Prabhakar Ray, Matthew Howard

摘要:

近年来,通过引入通过演示直观地教导机器人任务导向行为的方法,在开发多功能自主机器人方面出现了蓬勃发展的转变。本文提出了一种基于演示编程的零空间策略学习方法。使用这种方法的主要优点是通过重定向系统冗余来概括任务,以及用不同链路数量和长度的另一个系统完全替换整个系统的能力,同时仍然准确地重复受相同约束的任务。该方法的有效性已被证明在一个3链接的仿真和现实世界的实验中使用的人作为演示者,并通过任务再现7 DoF物理机器人进行验证。在模拟中,即使只有5个数据点,该方法也能准确工作,误差小于10^-14。所示的方法优于当前国家的最先进的方法,在一个模拟的3DoF机器人操纵器控制问题,运动再现使用学习的约束。重定向的系统零空间组件也证明了在一个任务中,控制如何解决冗余允许避障。最后,该方法在现实世界的实验中使用来自人类主体的演示进行验证,其中学习的任务空间轨迹被转移到不同实施例的7 DoF物理机器人上。

英文摘要:

In recent years, there has been a booming shift in the development of versatile, autonomous robots by introducing means to intuitively teach robots task-oriented behaviour by demonstration. In this paper, a method based on programming by demonstration is proposed to learn null space policies from constrained motion data. The main advantage to using this is generalisation of a task by retargeting a systems redundancy as well as the capability to fully replace an entire system with another of varying link number and lengths while still accurately repeating a task subject to the same constraints. The effectiveness of the method has been demonstrated in a 3-link simulation and a real world experiment using a human subject as the demonstrator and is verified through task reproduction on a 7DoF physical robot. In simulation, the method works accurately with even as little as five data points producing errors less than 10^-14. The approach is shown to outperform the current state-of-the-art approach in a simulated 3DoF robot manipulator control problem where motions are reproduced using learnt constraints. Retargeting of a systems null space component is also demonstrated in a task where controlling how redundancy is resolved allows for obstacle avoidance. Finally, the approach is verified in a real world experiment using demonstrations from a human subject where the learnt task space trajectory is transferred onto a 7DoF physical robot of a different embodiment.

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。

↑