Nonlinear dynamics of drives with elasticities and friction

Control of drives with elasticity and frictions requires an insight into their nonlinear dynamics. A simple model of the dynamics of the drive with nonlinear friction and elasticities combined with the structural damping was proposed. The last fact gives rise to the hysteretic reciprocal force (moment) which, together with friction, brings into existence a second‐order oscillatory system with the memory effect. The model obtained was tested on the precision drive of the rotary support of an optical telescope.