Modelling friction phenomena in an underactuated tendon driven finger by means of vision system device data

This study aims to improve the simulation model of a tendon driven finger, by means of experimental data acquired with a vision device. This mechanical system is part of an underactuated mechanical hand that was developed also for prosthetic purpose: the “Federica” hand. Using measured data, the multibody model has been enriched to account for friction phenomena. The friction contribution is designed to make the multibody simulation results closer to those of the real finger dynamics. At the same time, it is possible to use the improved model to study the effects of friction phenomena on the dynamic behaviour of the real mechanical system.