SYNCHRONOUS-COPHASED ELECTRIC MOTOR Russian patent published in 2007 - IPC H02P7/285 H02P7/292 

FIELD: electric engineering, possible use in precision systems for adjusting angular speed, built on basis of phase synchronization contour.

SUBSTANCE: in synchronous-cophased electric motor, positions of impulse of photo-impulse speed indicator, mechanically connected to shaft of driving motor, are measured relatively to standard signal and elements are used which ensure injection of that signal into series of check connection impulses received at frequency-phase discriminator from speed meter. In electric drive, register, trigger, inverter, adder and bus for controlling counting coefficient of one of dividers which operates in mode of subtracting counter, are used, while increased order of system astaticism is achieved in terms of motor shaft speed, resulting in reduced stabilization error and expanded range of speed adjustment.

EFFECT: reduced error of motor shaft position stabilization.

4 dwg