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De l’expérimentation à l’étude dynamique et énergétique de mouvements humains

Olivier Coussi 1 
1 RoBioSS - Robotique, Biomécanique, Sport, Santé
GMSC - Département Génie Mécanique et Systèmes Complexes
Abstract : A general methodology for dynamic motion analysis combining motion data acquisition and dynamic modeling is developed to determine all components of joint stress during human motion. The movements studied naturally obey the laws of the dynamics of multibody systems. These describe how joint forces, segment inertia, gravity and supporting forces combine to generate the observed movement. The calculation methods presented are based on the implementation of these laws, in order to carry out a quantitative analysis of the physical phenomenon that is movement, in terms of energy expended and effort delivered. Two distinct approaches are proposed to achieve two partially overlapping balances: a global analysis based on the use of the kinetic energy theorem and a local analysis that implements the classical laws of dynamics. The multi-resolution analysis technique by wavelet transformation is introduced for the processing and filtering of kinematic motion data acquired by optoelectronic systems. Three reference movements are analyzed: flexion-extension, walking in the sagittal plane and pedalling. The approach implemented contains the experimental means of validating the results obtained. The principles of optimal control theory are used to simulate optimal movements in the sense of a criterion for a flexion-extension movement whose duration is specified. Simulated optimal movements are compared to real movement in order to study the criteria of optimality when performing human movements.
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Submitted on : Monday, April 29, 2019 - 11:28:52 AM
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Olivier Coussi. De l’expérimentation à l’étude dynamique et énergétique de mouvements humains. Automatique / Robotique. Université de Poitiers, 1997. Français. ⟨tel-02113880⟩

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