CONTROL SYSTEM FOR MOTOR WITH ELECTRONIC SWITCH Russian patent published in 1997 - IPC

FIELD: commutator-free electric drives with permanent-magnet motors. SUBSTANCE: rotating emf of motor de-energized winding is integrated by means of differential integrator, and integration of self-induction emf of de-energized winding built up in case of dissipation of magnetic-field reactive energy stored in it by means of reset pulse shaper. Newly introduced are Schmitt flip-flop, trigger resistor, and differential integrator built around integrated operational amplifier. EFFECT: improved noise immunity of device, sensitivity of rotor position detecting system, device efficiency, reliability; simplified design and reduced cost. 3 cl, 5 dwg