DEVICE FOR AUTOMATIC CONTROL OVER DC BRUSHLESS MOTOR Russian patent published in 2001 - IPC

FIELD: electrical engineering. SUBSTANCE: technical result of invention consists in development of circuit for automatic control over brushless motor that provides for conditions of retunable stabilized rotational speed and stable operation of motor during start and variation of load torque. Device for realization of invention has rotor position pickup, regulator of pulse length, electronic switch and feedback circuit. Feedback circuit is inserted with former of voltage setting, regulator of depth of feedback and integrator and outputs of feedback circuit are connected to inputs of comparators inserted into regulator of pulse length which outputs are connected to inputs of electronic switch of armature windings of motor via detectors. EFFECT: improved functional reliability of device. 4 dwg