Fractional Multi-Models of the Gastrocnemius Frog Muscle - Accepted paper in Journal of Vibration and Control, Special Issue on "Fractional Differentiation and Its Applications", Sage Publishing, to be published in 2007.

In this paper, frog gastrocnemius muscles are studied, and a multi-model identification presented. A transfer function is defined with few parameters to simulate striated muscle (Gastroctnemius) behaviour, for inclusion in a future real-time salamander computer model. A two-model structure permits description of both contraction and relaxation properties. Here, two physiological influences, fatigue and fibre types, are taken into account. A multi-model structure for each fibre type (Fast (IIB), Intermediate (IIA) and Slow (I) fibres) is also used for inclusion in a future agonist-antagonist structure computer model.