FIELD: electrical engineering; DC drive speed control. SUBSTANCE: DC drive (known as three-fold integrating automatic DC drive speed control system) is provided, in addition, with voltage sensor, three aperiodic units, integrating unit, three proportional units, and two inertial-differentiating units. Proposed drive enables attaining zero static error in current regulation and minimal possible error in speed regulation when following up control signal; response of current and speed control circuits is two and sixteen times, respectively, greater and dynamic speed control error in case of external stepped action with respect to load is reduced by 60 times. In addition, proposed drive, like its prototype, provides for second-order floating control relative of disturbing action. EFFECT: improved reliability and precision of control. 1 dwg
