Optimal synthesis versus dynamic analysis for an acrobatic aerial movement

Leboeuf, FY ORCID: https://orcid.org/0000-0002-6483-9150, Seguin, P and Lacouture, P 2012, 'Optimal synthesis versus dynamic analysis for an acrobatic aerial movement' , Movement & Sport Sciences, 25 (75) , pp. 19-25.

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Abstract

A predictive method: the optimal synthesis, based on an optimal dynamic problem, was solved for generating the aerial phase of a backward somersault. Optimal joint torques were compared with those resulting from inverse dynamics. A gymnast was modeled as a planar seven-segment multibody system with six internal degrees of freedom. The aerial motion was generated using a parametric optimization technique. The performance criterion minimized the time integral of quadratic joint torques. Optimal synthesis has produced a somersault closely mimicking the experimental one. Optimal joint torques revealed the motor control at the knee after takeoff unattainable by inverse dynamics analysis because of the measurement uncertainty propagation. Moreover, our study suggests that minimization of joint torques might be the primary control objective of a backward somersault.

Item Type: Article
Uncontrolled Keywords: aerial movement,biomechanics,dynamic synthesis,dynamique pour simuler la,inverse dynamics,numerical optimization,phase a\'rienne d,r\'sum\',synth\`se optimale versus analyse,un
Schools: Schools > School of Health Sciences
Journal or Publication Title: Movement & Sport Sciences
Publisher: EDP Sciences
ISSN: 2118-5735
Depositing User: Dr Fabien LEBOEUF
Date Deposited: 05 Oct 2018 13:46
Last Modified: 05 Oct 2018 18:19
URI: http://usir.salford.ac.uk/id/eprint/46455

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