Classification of servo motors:

Can be divided into squirrel-cage AC servo motor, gear reducer cage AC servo motor, non-magnetic cup type AC servo motor, with positioning device squirrel cage AC servo motor, slotted armature (electromagnetic or permanent magnet) DC servo motor, slotted armature (electromagnetic or permanent magnet) DC servo motor, gear reducer Permanent Magnet DC servo motor, Hollow Cup-shaped armature (permanent magnet) DC servo motor, DC servo motor/Permanent magnet linear servo motor, printing winding armature (permanent magnet type) DC servo motor, brushless armature (permanent magnet) DC servo motor.

1: AC servo motor/squirrel cage type

The rotor is a squirrel cage structure.

It has the advantages of small size and reliable work, and it is not smooth when running at low speed.

Small power automatic control system.

2: AC servo motor/gear reducer cage type.

The rotor is a squirrel cage structure with a gear reducer.

The same as the squirrel cage type, can be directly connected with the load.

Small power automatic control system.

3: AC servo motor/non-magnetic cup

The cup-shaped rotor is made of nonmagnetic metal aluminum and copper, and the inner and outer stator of the cup is composed of magnetic circuit.

Rotor inertia is small, smooth operation, no jitter phenomenon, excitation current and volume is larger.

A smooth system, such as integral circuits, is required.

4: AC servo motor/positioning device Squirrel cage type

The rotor is a squirrel cage structure with a positioning device.

can only rotate in one direction.

5: DC servo motor/slotted armature (electromagnetic or permanent magnet)

Similar to the general DC motor, but the ratio of armature core length to diameter is large and the air gap is small.

There is a decline in the mechanical properties and linear regulation characteristics of fast response.

General DC Servo system.

6: DC servo motor/non-slot armature (electromagnetic or water magnetic)

Armature core is a smooth cylinder, armature winding with heat-resistant epoxy resin fixed on the core surface, large air gap.

In addition to the characteristics of general DC servo motor, its moment of inertia is small, the electromechanical time constant is small and the commutation is good.

It is used in the servo system which requires fast action and high power.

7: DC servo motor/Gear reducer Permanent magnet type

With gear reducer.

Can be directly connected to the load.

It is used in the servo system which requires fast action and high power.

8: DC servo motor/Hollow cup-shaped armature (permanent magnet)

Armature winding with epoxy resin casting into a cup-shaped, hollow cup armature inside and outside both sides have a core formation magnetic circuit.

The time constant is small, the commutation is good, the low-speed operation is smooth.

Used in a servo system that requires quick action.

9: DC servo motor/Permanent magnet linear servo motor

The movable part is the movable ring, also called the Sound coil motor.

For linear motion.

A control motor for linear motion.

10: DC servo motor/Printing winding armature (permanent magnet type)

The pole axis is mounted and has a fan-shaped pole shoe. The armature is a disc insulated sheet, which is printed on the bare windings, the armature has no core, the stator uses the aluminum nickel cobalt magnetic steel or ferrite magnet, generally does not have the commutator, but by the electric brush and the armature winding surface one layer direct sliding contact, the motor torque is smooth, has no cogging effect, the spark is small, the pulse torque is big, the heat dissipation performance is good, The electromechanical time constant is small, the low-speed operation performance is good.

For systems that are frequently used for low-speed and start-up reversals.

11: DC servo Motor/Brushless armature (permanent magnet type)

Without mechanical commutator and brush, it replaces the mechanical reversing device of general DC motor by electronic reversing device. It consists of three basic parts, such as motor body, position sensor and electronic reversing switch circuit.

Adjustable speed performance of a stable range of wide, low noise, high reliability, long life, no reversing spark, no interference to the radio.

Suitable for spacecraft, satellite, low-noise camera, precision instrumentation and other driving devices.

Considerations

1, the pulse output problem, the software has the bug.

2, if carrying, consider transmission mechanism problem.

3, using oscilloscope to monitor and control the output, to observe whether interference caused.