1. Servo motor
Servo motors are widely used in various control systems, can convert the input voltage signal into the mechanical output on the motor shaft, drag the controlled component, so as to achieve the purpose of control.
Servo motors are divided into DC and AC. The earliest servo motors are general DC motors. Only when the control accuracy is not high, the general DC motors are used as servo motors. In terms of structure, the DC servo motor is a small-power DC motor, and its excitation is mostly controlled by armature control and magnetic field, but usually armature control is used.
2. Stepper motor
Stepper motors are mainly used in the field of CNC machine tool manufacturing. Since stepper motors do not require A / D conversion and can directly convert digital pulse signals into angular displacement, they have always been regarded as the most ideal CNC machine tool actuators.
In addition to the application in CNC machine tools, stepper motors can also be used in other machines, such as motors in automatic feeders, motors for universal floppy disk drives, and printers and plotters.
3. Torque motor
Torque motor has the characteristics of low speed and high torque. Generally, the AC torque motor is often used in the textile industry, and its working principle and structure are the same as those of the single-phase asynchronous motor.
4. Switched reluctance motor
Switched reluctance motor is a new type of speed-regulating motor with extremely simple and sturdy structure, low cost and excellent speed-regulating performance. It is a strong competitor of traditional control motors and has strong market potential.
5. Brushless DC motor
Brushless DC motors have good linearity in mechanical characteristics and adjustment characteristics, wide speed range, long service life, easy maintenance and low noise. There is no series of problems caused by brushes, so this motor has very good control system Great application.
6. DC motor
DC motor has the advantages of good speed regulation performance, easy start, and ability to start with load, so the application of DC motor is still very wide, especially after the emergence of thyristor DC power supply.
7. Asynchronous motor
The asynchronous motor has the advantages of simple structure, convenient manufacture, use and maintenance, reliable operation, small quality and low cost. Asynchronous motors are widely used in driving machine tools, water pumps, blowers, compressors, hoisting and hoisting equipment, mining machinery, light industry machinery, agricultural and sideline product processing machinery, and most industrial and agricultural production machinery, household appliances and medical equipment.
There are many applications in household appliances, such as electric fans, refrigerators, air conditioners, and vacuum cleaners.
8. Synchronous motor
Synchronous motors are mainly used in large-scale machinery, such as blowers, water pumps, ball mills, compressors, steel rolling mills, and small and micro-instrumentation or as control elements. The three-phase synchronous motor is its main body. In addition, it can also be used as a tuning camera to deliver inductive or capacitive reactive power to the grid.
