CNC feed drive module model simplification and estimation of its parameters

Modelling of physical components such as spring-damper, mass or screw-nut mechanism gives opportunity to simulate actual behavior of a mechatronic system like a CNC feed drive module. Due to its complexity, it is crucial to conduct proper identification and then estimation process regarding only those parameters, which have the largest impact on the developed model. It is important to create functional physical model, because in practical use only those can be exploited. In this paper, a nonlinear model of a feed drive system is presented in details. Author propose a simplification method of differential equations, which were exploited to develop the model to facilitate estimation process. Results of simulations of developed model are included to confirm the correctness of made assumptions.