Angular velocity indirect determination device structure for the synchrophase electric drive

The improved indirect method for the synchro-phase electric drive (SPED) angular velocity errors is proposed. The device structure for the method implementation is offered. The method is based on the trimming frequencies and aimed to detect the time intervals at determining the angular velocity errors. Furthermore, it is based on the quartz-crystal oscillator (QCO) signal pulses to be counted for the errors determination. The device is based on the three prescalers, QCO, pulsed phase-frequency detector (PPFD) and MCU.