Zeestraten, M.J.A., Havoutis, I., Calinon, S. and Caldwell, D.G. (2017)
Learning Task-Space Synergy Controllers from Demonstration
In Proc. of the IEEE/RSJ Intl Conf. on Intelligent Robots and Systems (IROS).

Abstract

In the context of robotic control, synergies can form an elementary unit of behavior. By specifying task-dependent coordination behaviors at a low control level, one can achieve task-specific disturbance rejection. In this work we present an approach to learning such controllers by demonstration. We identify a synergy by extracting covariance information from demonstration data. The extracted synergy is used to derive a time-invariant state feedback controller through optimal control. To cope with the non-Euclidean nature of robot poses, we utilize Riemannian geometry, where both estimation of the covariance and the associated controller take into account the geometry of the pose manifold. We demonstrate the efficacy of the approach experimentally, in a bimanual manipulation task.

Bibtex reference

@inproceedings{Zeestraten17IROS,
	author="Zeestraten, M. J. A. and Havoutis, I. and Calinon, S. and Caldwell, D. G.", 
	title="Learning Task-Space Synergy Controllers from Demonstration",
	booktitle="Proc. {IEEE/RSJ} Intl Conf. on Intelligent Robots and Systems ({IROS})",
	year="2017",
	month="September",
	address="Vancouver, Canada",
	pages=""
}
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