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The control circuit of two-phase servo motor

2016-09-01 23:55  
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The control circuit of two-phase servo motor
Two-phase servo motor has the field winding and control winding, when the phase difference is 90 °, it generates the rotation torque. The potentiometer connected to the motor shaft will get the voltage difference between the corresponding voltage and target value detected by potentiometer, and voltage difference is used as the error voltage, which is used as the input voltage of servo amplifier to control motor be consistent with the target value. And VTl and its associated components form the phase shift circuit, and MCl709 is the single-end output preamplifier of single power supply, and VT2-VT5 form the B complementary output circuit.