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What is the difference between brushed motors and x-team bru

Source:X-TEAMC   Browse:   Release time:2021-07-21 13:55

The brushed motor is the first type of motor that everyone comes into contact with. The motor introduced in the physics class in middle school is also shown as a model. The main structure of a brushed motor is stator + rotor + brushes, which obtain rotational torque through the rotating magnetic field, thereby outputting kinetic energy. The brush and the commutator are in constant contact and friction, and play a role of conduction and commutation during rotation.

The brushed motor is the first type of motor that everyone comes into contact with. The motor introduced in the physics class in middle school is also shown as a model. The main structure of a brushed motor is stator + rotor + brushes, which obtain rotational torque through the rotating magnetic field, thereby outputting kinetic energy. The brush and the commutator are in constant contact and friction, and play a role of conduction and commutation during rotation.

In brushless motors, the work of commutation is completed by the control circuit in the controller (usually Hall sensor + controller, more advanced technology is magnetic encoder).

The brushless motor adopts electronic commutation, the coil does not move, and the magnetic pole rotates. The brushless motor uses a set of electronic equipment to sense the position of the magnetic poles of the permanent magnet through the Hall element. According to this perception, the electronic circuit is used to switch the direction of the current in the coil at the right time to ensure that the magnetic force in the correct direction is generated to drive the motor. . Eliminate the shortcomings of brushed motors.
 
 
 
These circuits are motor controllers. The controller of the brushless motor can also realize some functions that cannot be realized by the brushed motor, such as adjusting the power switching angle, braking the motor, making the motor reverse, locking the motor, and using the brake signal to stop the power supply to the motor. The electronic alarm lock of the battery car now makes full use of these functions.
 
 
 
The brushless DC motor is composed of a motor body and a driver, and is a typical mechatronic product. Because the brushless DC motor runs in a self-controlled manner, it will not add a start winding to the rotor like a synchronous motor that is started under heavy load under variable frequency speed regulation, nor will it cause oscillation and out-of-step when the load changes suddenly.

 

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