Vestnik of Samara State Technical University. Technical Sciences SeriesVestnik of Samara State Technical University. Technical Sciences Series1991-85422712-8938Samara State Technical University2019110.14498/tech.2016.2.%uResearch ArticleMathematical model of the digital servo drive with the asynchronous executive engineStarikovAlexander V(Dr. Sci. (Techn.)), Professor-JabasovaDarya NPostgraduate Student-RokaloDaniil YuPostgraduate Student-Samara State Technical University1506201624216216810022020Copyright © 2016, Samara State Technical University2016In the paper the digital servo electric drive with the asynchronous executive engine the structural construction of which differs from traditional systems of the subordinated regulation is considered. The electric drive block diagram in passing to discrete transfer functions is given. Transfer functions of digital regulators taking into account the given algorithm of their work are defined. Transfer functions of the asynchronous electric motor together with the power converter and a zero order hold device are received. Discrete transfer function of the closed servo drive is found when in a current contour the proportional-integrated regulator is applied.servo driveasynchronous motordiscrete transfer functionzero order hold deviceследящий электроприводасинхронный электродвигательдискретная передаточная функцияэкстраполятор нулевого порядка[Терехов В.М. Системы управления электроприводов: Учебник для студ. вузов / В.М. Терехов, О.И. Осипов; Под ред. В.М. Терехова. - М.: Академик, 2005. - 304 с.][Стариков А.В., Джабасова Д.Н. Следящий электропривод с асинхронным исполнительным двигателем // Известия высших учебных заведений. Электромеханика. - 2014. - № 5. - С. 72-75.][Микропроцессорные системы автоматического управления / В.А. Бесекерский, Н.Б. Ефимов, С.И. Зиатдинов и др.; Под общ. Ред. В.А. Бесекерского. - Л.: Машиностроение, 1988. - 365 с.][Simovert Masterdrives Motion Control: Compendium. - Germany: Siemens AG, 2006. - 1498 p.][Simovert Masterdrives Vector Control: Компендиум. - Siemens: издание AG, 2006. - 960 с.]