1, the servo motor

Servo motors are widely used in various kinds of control system, can convert the input voltage signal to the motor shaft mechanical output, drag the control element, thereby

To control purposes.

Has dc and ac servo motor, the original servo motor was general of dc motor, the control accuracy is not high, to adopt the general dc

Motor servo motor. Structurally, the dc servo motor is small power dc motor, its excitation is controlled by the armature and field control

, but usually adopt the armature control.

2, the stepping motor

Stepper motor is mainly used in the field of nc machine tool manufacturing, due to the stepper motor don't need A/D conversion, can be directly to digital pulse signal into angular displacement

So has long been regarded as the most ideal executive components of nc machine tools.

In addition to the application of nc machine tools, the stepper motor can also be used in other machinery, such as automatic feeder of the motor, as a general purpose of the floppy disk drive

The motor, can also be applied in the printer and plotter.

3, torque motor

Torque motor has the characteristics of low speed and large torque. Generally in the textile industry often use ac torque motor, its working principle and structure and single phase asynchronous electric

The same motivation.

4, switch reluctance motor

Switched reluctance motor is a new type of speed regulation motor, extremely simple and strong structure, low cost, high performance is excellent, is a traditional control motor strong competition

, with a strong market potential.

5, brushless dc motor

Brushless dc motor of the mechanical properties and the characteristics of the adjustment good linearity, wide speed range, long service life, convenient maintenance noise small, does not exist a caused by brush

Series of problems, so this kind of motor in the control system has a lot of applications.

6, the dc motor

Dc motor has good speed regulation performance and the advantages of starting easily, can load starting, so the dc motor is still widely used, especially in the thyristor

The coming of dc power supply.

7, the asynchronous motor

Asynchronous motor has simple structure, manufacture, use and maintenance is convenient, reliable operation and quality is small, low cost advantages. Asynchronous motor is widely should be

Used to drive machine, water pump, fan, compressor, lifting lifting equipment, mining machinery, light industrial machinery, agricultural and sideline products processing machinery, etc. Most of the workers and peasants production machine

Machinery and household appliances, medical equipment and so on.

Used in household appliances, such as electric fans, refrigerators, air conditioners, vacuum cleaners, etc.

8, synchronous motor

Synchronous motor is mainly used in heavy machinery, such as fan, water pump, compressor, rolling mill, ball mill and small, micro instruments and equipment, or act as control element

. The three phase synchronous motor is the main body. In addition, still can be used when the condenser, the grid inductive or capacitive reactive power.