If the parameter selection of the AC servo motor is similar to that of the general single-phase asynchronous motor, once the motor rotates, even if the control is equal to zero, the motor continues to rotate and the motor loses control. This phenomenon is called "self-rotation".
How to overcome the "rotation" phenomenon of AC servo motor?
Synthetic torque characteristics of forward and reverse rotating magnetic fields: 1. When single-phase excitation, in the motor operating range 0
When the control voltage applied to the control winding is reversed (keeping the excitation voltage unchanged), the rotor of the motor is reversed due to the change in the direction of rotation of the rotating magnetic field. When the size of the control voltage applied to the control winding changes, the ellipticity of the rotating magnetic field generated by it is different, and the electromagnetic torque generated is also different, thereby changing the speed of the motor.
