What is the difference between a geared dc motor and a general DC motor?
DC geared motors usually have higher speed and less torque. Geared dc motor are suitable for applications where torque is less demanding.
DC-DC geared motor, that is, gear DC geared motor, is based on the usual DC geared motor, plus the matching gear reducer. The role of the gear reducer is to supply a lower speed and a larger torque. Together, the different gear ratios of the gearbox can supply different speeds and torques. This greatly improves the use of DC geared motors in the automation profession.
1. According to the type of operating power supply: can be divided into DC geared motor and communication motor.
1.1 DC motors can be distinguished according to the layout and operation principle: brushless DC motor and brushed DC motor.
1.1.1 Brushed DC motor can be distinguished: permanent magnet DC motor and electromagnetic DC motor.
1.1.1.1 Electromagnetic DC motor distinction: series-excited DC motor, shunt DC motor, separately excited DC motor and compound excitation DC motor.
1.1.1.2 Permanent magnet DC motor distinction: rare earth permanent magnet DC gear motor, ferrite permanent magnet DC motor and AlNiCo permanent magnet DC motor.
1.2 The communication motor can also be divided into: single-phase motor and three-phase motor.
2. According to the layout and operation principle: can be divided into DC motor, asynchronous motor, synchronous motor.
2.1 Synchronous motors can be distinguished: permanent magnet synchronous motors, reluctance synchronous motors and hysteresis synchronous motors.
2.2 Asynchronous motors can be distinguished: induction motors and communication commutator motors.
2.2.1 Induction motors can be distinguished: three-phase asynchronous motors, single-phase asynchronous motors and shaded-pole asynchronous motors.
2.2.2 Communication commutator The motor can be distinguished: single-phase series-excited motor, AC-DC dual-purpose motor and repeller motor.
3. According to the starting and working methods: capacitive starting single-phase asynchronous motor, capacitive working single-phase asynchronous motor, capacitor starting working single-phase asynchronous motor and split-phase single-phase asynchronous motor.
4. According to the use of distinction: drive motor and control motor.
4.1 Drive motor distinction: Electric things (including drilling, polishing, polishing, slotting, cutting, reaming, etc.) use electric motors, household appliances (including washing machines, electric fans, refrigerators, air conditioners, tape recorders, video recorders, Motors for motors and other general small mechanical equipment (including various small machine tools, small machines, medical equipment, electronic equipment, etc.) for DVD players, vacuum cleaners, cameras, hair dryers, electric shavers, etc.
4.2 Control motor is divided into: stepper motor and servo motor.
5. According to the layout of the rotor: cage induction motor (the old specification is called squirrel cage asynchronous motor) and wound rotor induction motor (the old specification is called winding asynchronous motor).
6. According to the working speed: high-speed motor, low-speed motor, constant speed motor, speed control motor. Low-speed motors are further classified into gear DC gear motors, electromagnetic gear motors, torque motors and claw-pole synchronous motors.
In addition to the stepless constant speed motor, the stepless constant speed motor, the stepless variable speed motor and the stepless variable speed motor, the speed regulating motor can also be divided into an electromagnetic speed regulating motor, a DC speed regulating motor, a PWM variable frequency speed regulating motor and Switched reluctance motor.
The rotor speed of an asynchronous motor is always slightly lower than the synchronous speed of the rotating magnetic field.
The rotor speed of the synchronous motor is always at the synchronous speed regardless of the size of the load.
