Description
Product details:
A20B-2101-0390 FANUC Manufacturers of power boards with noise filters have been discontinued
Printed circuit board
Power board with noise filter
PCB-ALPHA I PSM New high power
Computer Numerical Control
A20B-2101-0390 FANUC Manufacturers of power boards with noise filters have been discontinued
Ac servo motor is similar to single-phase asynchronous motor in structure, its stator core has two phase windings with a space difference of 90° electrical Angle. One is the excitation winding and the other is the control winding. When the motor is working, the excitation winding is connected to the single-phase AC voltage, and the control winding is connected to the control signal voltage. The two phase voltages are required to be of the same frequency.
Ac servo motor rotor has two forms of structure. One is cage rotor, which is similar to the cage rotor of ordinary three-phase asynchronous motor, but more slender in shape, which reduces the moment of inertia of the rotor and reduces the electromechanical time constant of the motor. The cage-rotor AC servo motor has large volume, small air gap, small excitation current required, high power factor and large mechanical strength, but the fast response performance is a little poor, and the low speed operation is not smooth enough.
The other is a non-magnetic hollow cup rotor, the rotor is made into a cup structure, in order to reduce the air gap, there is an internal stator in the cup rotor, the stator is not set on the winding, only plays the role of magnetic conductivity, the rotor is made of aluminum or aluminum alloy, the cup wall thickness of 0.2~0.8mm, the moment of inertia is small and has a large resistance. Ac servo motor with hollow cup rotor has the advantages of fast response and stable operation, but it has complex structure, large air gap and large load current, and low power factor.
A20B-2101-0390 FANUC Power Supply Board with noise filter In AC servo motors, in addition to the requirement that the motor cannot “spin”, it is also required that the magnitude and phase of the voltage applied to the control winding can change the magnitude and direction of the motor speed.
According to the theory of rotating magnetomotive force, a rotating magnetic field is produced by the joint action of excitation winding and control winding, and the rotation direction of the rotating magnetic field is from the winding with phase advance to the winding with phase lag. By changing the phase of the control voltage in the control winding, the lead-lag relationship of the two-phase winding can be changed, so as to change the rotation direction of the rotating magnetic field, and the speed direction of the AC servo motor will also change. Changing the size and phase of the control voltage can change the flux of the rotating magnetic field, thus changing the electromagnetic torque of the motor, and the speed of the AC servo motor will also change.
The speed control methods of AC motor include amplitude control, phase control and amplitude phase control.
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