Encoding bi-manual coordination patterns from human demonstrations

  • Authors:
  • Ana Lucia Pais;Aude Billard

  • Affiliations:
  • École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland;École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland

  • Venue:
  • Proceedings of the 2014 ACM/IEEE international conference on Human-robot interaction
  • Year:
  • 2014

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Abstract

Humans perform tasks such as bowl mixing bi-manually, but programming them on a robot can be challenging specially in tasks that require force control or on-line stiffness modulation. In this paper we first propose a user-friendly setup for demonstrating bi-manual tasks, while collecting complementary information on motion and forces sensed on a robotic arm, as well as the human hand configuration and grasp information. Secondly for learning the task we propose a method for extracting task constraints for each arm and coordination patterns between the arms. We use a statistical encoding of the data based on the extracted constraints and reproduce the task using a Cartesian impedance controller.