PHASE CONTROLLER OF MOTOR

摘要

PURPOSE:To shorten the phase synchronization lead-in time of a motor by altering the phase of a discontinuous range of a reference phase signal by compensating means when the rotating phase signal of a motor is latched to the discontinuous range or the vicinity of the reference phase signal. CONSTITUTION:A discriminator 4 discriminates wherther a phase signal latched by a latch circuit 7 is (i) a signal corresponding to a certain prescribed or higher delaying phase or (ii) a signal corresponding to a certain prescribed or higher leading phase. A compensator 6 forcibly compensates the reference phase signal to the prescribed delay phase signal in the prescribed or higher leading phase in case of the above (i) and the reference phase signal to a signal corresponding to the prescribed leading phase in the prescribed or higher delay phase.