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arXiv 1809.05074cs.LGstat.ML
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逆动力学模型的无导数在线学习

Derivative-free online learning of inverse dynamics models

Mitsubishi Electric Research Labs (MERL)(三菱电机研究实验室(MERL));University of Padova(帕多瓦大学);Massachusetts Institute of Technology(麻省理工学院);Istituto Italiano di Tecnologia(意大利理工学院)

Diego Romeres, Mattia Zorzi, Raffaello Camoriano, Silvio Traversaro, Alessandro Chiuso

摘要:

本文讨论了机器人逆动力学建模的在线算法。几个模型类,包括刚体动力学(RBD)模型,数据驱动模型和半参数模型(这是前两个类的组合)被放置在一个共同的框架。虽然在文献中使用的模型类通常利用联合速度和加速度,这需要近似诉诸数值微分方案,在本文中提出了一个新的“衍生自由”的框架,不需要这个预处理步骤。一个广泛的实验研究,从右臂的iCub机器人的真实数据,比较不同的模型类和估计程序,表明所提出的“衍生自由”的方法优于现有的方法。

英文摘要:

This paper discusses online algorithms for inverse dynamics modelling in robotics. Several model classes including rigid body dynamics (RBD) models, data-driven models and semiparametric models (which are a combination of the previous two classes) are placed in a common framework. While model classes used in the literature typically exploit joint velocities and accelerations, which need to be approximated resorting to numerical differentiation schemes, in this paper a new `derivative-free' framework is proposed that does not require this preprocessing step. An extensive experimental study with real data from the right arm of the iCub robot is presented, comparing different model classes and estimation procedures, showing that the proposed `derivative-free' methods outperform existing methodologies.

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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