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Journal of Vibration and Control
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Fractional Multi-models of the Frog Gastrocnemius Muscle

L. Sommacal

IMS - UMR 5218 CNRS, Dpt LAPS, Université Bordeaux 1 - ENSEIRB, 351 cours de la Libération, 33405 Talence France

P. Melchior

IMS - UMR 5218 CNRS, Dpt LAPS, Université Bordeaux 1 - ENSEIRB, 351 cours de la Libération, 33405 Talence France, Pierre.melchior{at}laps.ims-bordeaux.fr

A. Oustaloup

IMS - UMR 5218 CNRS, Dpt LAPS, Université Bordeaux 1 - ENSEIRB, 351 cours de la Libération, 33405 Talence France

J.-M. Cabelguen

INSERM U862, Institut F. Magendie, 146 rue Léo Saignat, 33077 Bordeaux France

A.J. Ijspeert

EPFL, Swiss Federal Institute of Technology, School of Computer and Communication Sciences, IC-ISIM-GRIJ, 1015, Lausanne, Switzerland

In this article, 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.

Key Words: System identification • modelling • multi-models • fractal systems • biomedical • muscle

Journal of Vibration and Control, Vol. 14, No. 9-10, 1415-1430 (2008)
DOI: 10.1177/1077546307087440
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