arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.06061cs.RO
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几何感知的动态运动基元

Geometry-aware Dynamic Movement Primitives

Aalto University(阿尔托大学)

Fares J. Abu-Dakka, Ville Kyrki

摘要:

在许多机器人控制问题中,刚度和阻尼矩阵以及可操作性椭球等因素自然地表示为对称正定(SPD)矩阵,该矩阵捕获了这些因素的特定几何特征。然而,典型的学习技能模型,如动态运动基元(DMP),不能直接与表示为SPD矩阵的量一起使用,因为它们限于欧几里得空间中的数据。在本文中,我们提出了一种新的数学原理框架,使用黎曼度量重新制定DMP,使所得到的配方可以与SPD数据的SPD流形。该方法的评价表明,DMPs的有益特性,如操作过程中目标的变化也适用于拟定制剂。

英文摘要:

In many robot control problems, factors such as stiffness and damping matrices and manipulability ellipsoids are naturally represented as symmetric positive definite (SPD) matrices, which capture the specific geometric characteristics of those factors. Typical learned skill models such as dynamic movement primitives (DMPs) can not, however, be directly employed with quantities expressed as SPD matrices as they are limited to data in Euclidean space. In this paper, we propose a novel and mathematically principled framework that uses Riemannian metrics to reformulate DMPs such that the resulting formulation can operate with SPD data in the SPD manifold. Evaluation of the approach demonstrates that beneficial properties of DMPs such as change of the goal during operation apply also to the proposed formulation.

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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