This paper deals with an identification model control system using recurrent neural networks to estimate the angle main mirror in azimuth moving of large radio telescope electric servo drive. The architectural approached to design recurrent neural networks based on “Nonlinear Auto Regressive with Exogenous inputs – NARX models” is analyzed. It is convenient to apply this design in the field of prediction and modeling control system. | The application of NARX neural networks in identification electric drive control system