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What is the difference between Servo Barrier Gate motor and ordinary motor

What is the difference between Servo Barrier Gate motor and ordinary motor

(Summary description)The Servo Barrier Gate motor can achieve precise control. It can rotate as much as it rotates, and it will also feedback.

What is the difference between Servo Barrier Gate motor and ordinary motor

(Summary description)The Servo Barrier Gate motor can achieve precise control. It can rotate as much as it rotates, and it will also feedback.

Information

The Servo Barrier Gate motor can achieve precise control. It can rotate as much as it rotates, and it will also feedback. The so-called closed loop is realized by the encoder to feedback to see if it actually rotates so much, so that the control accuracy is higher. An ordinary motor rotates when it is powered on, and stops when there is no power. In addition to rotating, if it has to say that it has any function, it is forward and reverse.

Servo Barrier Gate

The biggest difference between Servo Barrier Gate motors and ordinary asynchronous motors is that the rotor resistance is relatively large. The specific principle is as follows:

The structure of the Servo Barrier Gate motor is actually no different from the ordinary two-phase AC asynchronous motor. The stator of the servo motor has two AC windings with a difference of 120 degrees in electrical angles, which are called excitation windings and control windings. The rotor is the squirrel cage winding of a common cage asynchronous motor.

When Servo Barrier Gate is used, the excitation winding is connected to single-phase alternating current, which generates a pulsating magnetic field in the air gap, the rotor winding does not produce electromagnetic torque, and the motor does not work. When the control winding is connected to an alternating current with a phase difference of 90 degrees from the field winding, a rotating magnetic field will be generated in the air gap of the motor, and the rotor will generate electromagnetic torque to rotate. When the control voltage signal of the control winding is removed, if it is an ordinary motor, because the rotor resistance is small, (according to the double rotation theory) the combined result of the mechanical characteristics of the two rotating magnetic fields decomposed by the pulsating magnetic field is the generated electromagnetic torque. Greater than zero.

Therefore, the motor rotor still keeps rotating and cannot be stopped. The Servo Barrier Gate motor has a large rotor resistance and is so large that the maximum electromagnetic torque slip rate Sm "1. The combined result of the mechanical characteristics of the two rotating magnetic fields decomposed by the pulsating magnetic field is that the electromagnetic torque generated is less than zero, that is, the electromagnetic torque generated is the braking torque, and the motor will reduce the Stop turning soon.

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