Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back Mathematical model of a valve DC motor with closed windings on stator and rotor KOKHREIDZE D.K. The equations of valve electric machine with a semiconductor switchboard on the stator and rotor are obtained. Vector equations for the average values ​​of variables are written down in the scalar form with taking into account the introduced by switchboard specific character. The equations of transient mode are presented in the form convenient for computer programming and calculations. The analytical solutions for the current and torque in steady mode of machine operation are obtained in order to determine the performance characteristics. At a constant speed of rotor rotation by operator method are defined instantaneous values of current and torque in the transition process. On its static and dynamic properties the machine is advisable to be used with electromechanical energy converters in complex set of automatic regulation and control. Keywords: controlled switchboard, stator, rotor, valve machine, rotor position sensor, thyristor, electromagnetic torque. Contacts: E-mail: dkokhreidze@mail.ru Pp. 06-10.