In this paper the fractional model of the human arm is presented. Proposed approach is an attempt to consider the muscle damping properties in the simplest form possible. As the base for our simulations the equation of motion based on Lagrange formalism was used. In order to obtain fractional properties we propose using fractional-order derivatives instead of integer-ones. This simplification creates opportunity for an easy implementation and comparison with commonly used models. The core of the presented method is solving this nonlinear equation. The preliminary results was shown. The simplest model possible was analyzed. We considered only two DOF (degrees of freedom) planar model without joint limitations and properly distributed masses. This experiment is to show the damping properties of the fractional model.
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