Cancelling the sway motion of dynamic walking in visual servoing

Abstract : This paper introduces a visual servoing scheme for humanoid walking. Though most of the existing approaches follow a perception-decision-action scheme, we close the loop so that the control is robust to model error. Our approach is based on a new reactive pattern generator which modifies, at the control level, the footsteps, the center of mass and the center of pressure trajectories for the center of mass to track a reference velocity. And, in this paper, the reference velocity is directly given by a visual servoing control law. Since, the HRP- 2 walk induces a sway motion that disturbs the regulation of the visual control law, we introduce a control law allowing convergence in the image space and taking into account this sway motion.
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Claire Dune, Andrei Herdt, Olivier Stasse, Pierre-Brice Wieber, Kazuhito Yokoi, et al.. Cancelling the sway motion of dynamic walking in visual servoing. IROS 2010 - IEEE-RSJ International Conference on Intelligent Robots & Systems, Oct 2010, Taipei, Taiwan. pp.3175-3180, ⟨10.1109/IROS.2010.5649126⟩. ⟨inria-00567664⟩

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