The article considers a model for identifying the parameters of an electric motor by the free run-out method by creating a model of acceleration and deceleration processes in the Scilab Xcos environment. The model is based on a simplified model of an electric motor in the form of an aperiodic link of the first order, which is supplemented by a model of a mechanical link connected to the shaft of an electric motor. Taking into account the inertia of electromagnetic processes makes it possible to adequately model the state and parameters of the electric motor. Identification allows you to determine the moment of inertia of the mechanical part of the electric motor. The model is based on a system of differential equations describing the dynamics of the processes of acceleration and braking of an electric motor. The scheme of the model includes blocks for solving a system of differential equations and blocks for calculating an identifiable parameter. Simulation modeling was carried out in the Scilab Xcos environment to evaluate the functionality of the resulting model scheme. The values of the desired moment of inertia are calculated from the beginning to the end of the simulation process, and the correct value is obtained, with the exception of a short section at the beginning of acceleration. The obtained graphical dependences allow us to visually illustrate the process of acceleration and deceleration of an electric motor in the form of transient functions for torques.

Keywords: electric motor, moment of inertia, electromagnetic moment, run-out method, parameter identification, torque, model diagram, transient function