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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.
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