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Measuring dynamic characteristics of the human arm in three dimensional space

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2 Author(s)
Pierre, M.C. ; Dept. of Biomed. Eng., Case Western Reserve Univ., Cleveland, OH, USA ; Kirsch, R.F.

This work describes a method to measure the three-dimensional dynamic characteristics of the human arm. Endpoint dynamics, which characterizes the relationship between hand displacements and resulting forces, was estimated during the application of three-dimensional stochastic displacement perturbations applied to the endpoint of the arm. The dynamic input-output relations between the displacements and the forces were determined using a frequency domain nonparametric system identification technique. Endpoint inertia, viscosity and stiffness parameters were fit to the identified system. A graphical technique was introduced to help visualize these complex dynamic parameters. The results illustrate the importance of studying the endpoint dynamics in three dimensions.

Published in:

Engineering in Medicine and Biology, 2002. 24th Annual Conference and the Annual Fall Meeting of the Biomedical Engineering Society EMBS/BMES Conference, 2002. Proceedings of the Second Joint  (Volume:3 )

Date of Conference:

23-26 Oct. 2002