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arXiv · 2010.12234

On the mechanical contribution of head stabilization to passive dynamics of anthropometric walkers

Mehdi Benallegue·Jean-Paul Laumond·Alain Berthoz
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Abstract

During the steady gait, humans stabilize their head around the vertical orientation. While there are sensori-cognitive explanations for this phenomenon, its mechanical e fect on the body dynamics remains un-explored. In this study, we take profit from the similarities that human steady gait share with the locomotion of passive dynamics robots. We introduce a simplified anthropometric D model to reproduce a broad walking dynamics. In a previous study, we showed heuristically that the presence of a stabilized head-neck system significantly influences the dynamics of walking. This paper gives new insights that lead to understanding this mechanical e fect. In particular, we introduce an original cart upper-body model that allows to better understand the mechanical interest of head stabilization when walking, and we study how this e fect is sensitive to the choice of control parameters.

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Mehdi Benallegue, Jean-Paul Laumond, Alain Berthoz. 2020-10-29. On the mechanical contribution of head stabilization to passive dynamics of anthropometric walkers. https://doi.org/10.1177/0278364919894387

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