Three types of 3v dc motor
A DC motor is an electromechanical device that converts electrical energy into rotational mechanical energy using the interaction of a magnetic field and a conductor. The DC motor is a continuous actuator that converts electrical energy into mechanical energy. The basic working process of a DC motor is that the DC motor achieves this by producing a continuous angular rotation that can be used for rotary pumps, fans, compressors, wheels, and the like. As with conventional rotary DC motors, linear motors that produce continuous lining motion can also be used. AC motors are commonly used in high-power single-phase or multi-phase industrial applications and require constant rotational torque and speed to control large loads such as fans or pumps.
DC motors are the most commonly used actuators for generating continuous motion, and can be easily controlled to rotate their speeds, making them suitable for speed control used in applications, servo type control, and/or positioning. The DC motor consists of two parts, the "stator" is the stationary part and the "rotor" is the rotating part. There are basically three types of DC motors.
Brushed Motor - This type of motor is called "drawing" by passing a current through a commutator and a carbon brush assembly to create a magnetic field in a wound rotor (rotating part). The stator (stationary portion) magnetic field is generated by using a wound stator field winding or a permanent magnet. Brushed DC motors are usually cheap, small and easy to control.
Brushless Motor - This type of motor generates a magnetic field in the rotor by using permanent magnets attached thereto and electronically commutates. They are usually smaller but more expensive than traditional brushed DC motors because they use "Hall Effect" switches in the stator to produce the desired stator field rotation sequence, but they have better torque/speed characteristics and are more efficient. And has a longer service life than the equivalent wire drawing type.
Servo Motors - This type of motor is basically a brushed DC motor with some form of position feedback control connected to the rotor shaft. They are connected to and controlled by the controller and are primarily used for position control systems and radio control models.
DC motors have almost linear characteristics, the speed of which is determined by the applied DC voltage, and the output torque is determined by the current flowing through the motor windings. The rotational speed of any DC motor can vary from a few minutes per minute (rpm) to thousands of revolutions per minute, making it suitable for electronic, automotive or robotic applications. By connecting them to a gearbox or gear train, their output speed can be reduced while increasing the torque output of the motor at high speed.
