Parameters identification of a hybrid model for dry friction

An original methodology is proposed to tune the parameters of the model of a mechanical system with dry friction which is modeled with a new simple approach recently proposed. This approach is based on a hybrid (two-modes) model approach: one mode models the system motion and the other the motionless case. In this paper, the hybrid modeling of dry friction is first recalled, then the proposed identification methodology is presented. The inertia, the viscous friction and the Coulomb¿s effect are first identified using the power equation of the system. Secondly, a simple algorithm is proposed to find the system Stribeck effect parameter. The other parameters specific to the used hybrid model are finally tuned to match the real observed data. The proposed parameters identification methodology is compared in simulation with other methods and is validated on a real experimental system.