How to control the "rotation" of AC servo motor?

Servo motor, also known as control motor, is a motor controlled by precise servo feedback signal, which is divided into AC servo motor and DC servo motor. AC servo drive technology has made outstanding development. Many domestic electrical manufacturers have launched their own series of products, and constantly improve and update them. The "rotation" of AC servo motor is a common phenomenon, which will have certain impact on the application. Then, how to control the "rotation" of AC servo motor? Let's get to know about Tenghe Electric.

First of all, we need to figure out what is the "rotation" of AC servo motor? If the parameter selection of AC servo motor is similar to that of 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 "rotation".

How to control the "rotation" phenomenon of AC servo motor?

1. Composite torque characteristics of positive and negative rotating magnetic fields: 1. When single-phase excitation is applied, the motor operates within 0

2. When the control voltage applied to the control winding is in reverse phase (keep the excitation voltage unchanged), the rotation direction of the rotating magnetic field changes, causing the motor rotor to reverse. When 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 thereby is also different, thus changing the speed of the motor.

3. When the excitation voltage is constant, the characteristic curve moves down with the decrease of control voltage. Under the action of the same load torque, the speed of AC servo motor decreases uniformly with the decrease of control voltage.