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The classification of Servo motor

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1 according to the type of work power supply: can be divided into DC motor and AC motor.
1) the structure and working principle of the DC motor can be divided into four parts: the brushless DC motor and the brush DC motor.
Brushless DC motor can be divided into: permanent magnet DC motor and DC motor.
DC Motor Division: Series DC motor, DC motor, DC motor and DC motor.
Permanent magnet DC Motor Division: rare earth permanent magnet DC motor, ferrite permanent magnet DC motor and aluminum nickel Gu Yongci DC motor.
2) the AC motor can be divided into: single phase motor and three-phase motor.
 
2 according to the structure and working principle can be divided into: can be divided into DC motor, asynchronous motor, synchronous motor.
1) synchronous motor can be divided: permanent magnet synchronous motor, reluctance synchronous motor and hysteresis synchronous motor.
2) asynchronous motor can be divided into: induction motor and AC motor commutator.
Induction motor can be divided into three phases: three phase induction motor, single phase induction motor, shaded pole asynchronous motor, etc..
Commutator motor can be divided into: single phase series motor, AC and DC motor and repulsion motor.
 
3 according to the starting and operation mode can be divided: capacitor start single-phase induction motor, capacitor run single-phase induction motor, capacitor start single-phase induction motor and single-phase single-phase asynchronous motor.
 
4 by use can be divided into: drive motor and control motor.
1) is driven by motor can be division: motor for electric tools (including drilling, polishing, polishing, slotting, cutting and reaming tool), household appliances (including washing machine, electric fan, refrigerator, air conditioner, tape recorders, video recorders, DVD machines, vacuum cleaners, camera, hair dryer, electric razor) motors and other general small machinery and equipment, including a variety of small tools, small machinery, medical equipment, electronic equipment and other motor.
2) control with the motor and division: stepping motor and servo motor, etc..
 
5 according to the structure of the rotor can be divided: cage induction motor (the old standard squirrel cage induction motor) and wound rotor induction motor (the old standard is known as wound rotor induction motor).
6 according to the running speed can be divided into: high speed motor, low speed motor, constant speed motor, speed motor. Low speed motor is divided into gear reduction motor, electromagnetic induction motor, torque motor and claw pole synchronous motor, etc..
Adjustable speed motor can be divided into constant speed motor, a stepless constant speed motor, variable speed motor and stepless variable speed motor and with the exception of, also can be divided into electromagnetic adjustable speed motor, DC motor speed regulation, PWM inverter fed motor and switched reluctance motor.
The rotor speed of the induction motor is always slightly lower than that of the rotating magnetic field.
The rotor speed of the synchronous motor is not independent of the load size, but is always maintained as a synchronous speed.