METHOD FOR CONTROL OF AC ELECTRONIC MOTOR AND TRACKING SYSTEM FOR ITS REALISATION Russian patent published in 2010 - IPC H02P6/16 H02P27/04 G05B11/01 

FIELD: electricity.

SUBSTANCE: in control method as angle of synchronous motor shaft turn is converted into three-phase demodulated electric signal of motor rotor position sensor, amplitude of which is proportional to control signal, and as three-phase voltage of synchronous motor supply is formed from it, average value of which is changed according to sinusoid law, three-phase supply voltage is formed from sign of difference of signal of three-phase sensor of synchronous motor rotor position and signal of three-phase current sensor of synchronous motor. Control signal is formed from difference of speed setting signal and speed feedback signal. Tracking system with AC electronic motor comprises serially connected modulator, three-phase sensor of synchronous motor rotor position, three-phase demodulator, three-phase summator, three-phase relay, three-phase converter, three-phase current sensor of synchronous motor, three-phase synchronous motor, rotor of which is mechanically connected to shaft of three-phase position sensor of synchronous motor rotor, speed sensor of synchronous motor, rotor of which is mechanically connected to shaft of synchronous motor, summator, output of which is connected to modulator input, and the first summing input of summator is input of AC electronic motor control by speed. The second subtracting input of summator is connected to output of synchronous motor speed sensor.

EFFECT: provision of AC electronic motor characteristics, which are similar to characteristics of DC collector motor by means of analytical design of AC electronic motor rotation speed controller, optimal in accuracy.

2 cl, 1 dwg