it helps you

3. •Design is based on the construction of brush DC Motor.
• There are permanent magnets on the outside and a spinning
armature on the inside
•When electricity is put into this electromagnet, it creates a magnetic
field in the armature that attracts and repels the magnets in the stator.
•The armature will spin.

4.  DC motor is an electric motor that runs on direct
current (DC) electricity.
 Two types of DC motor - brush and brushless DC
Motor.
 Brushed DC electric motor generates torque directly
from DC power supplied to the motor by using
internal commutation, stationary magnets
(permanent or electromagnets), and rotating electrical
magnets.
 Brushless DC motors use a rotating permanent magnet
or soft magnetic core in the rotor, and stationary
electrical magnets on the motor housing

6. 1. When the coil is powered, a magnetic field is generated around the
armature. The left side of the armature is pushed away from the
left magnet and drawn toward the right, causing rotation.
2. The armature continues to rotate.
3. When the armature becomes horizontally aligned, the commutator
reverses the direction of current through the coil, reversing the
magnetic field.
4. The process then repeats.

7.  OVER ALL ADVANTAGES
1. Provide excellent speed
control for acceleration
and de-acceleration.
2.Easy to understand design
3.Simple, cheap drive design

8. High maintenance
**care required to maintain the mechanical interface
used to get current to the rotating field.
** maintenance includes the commutator (the
collection of copper and mica segments attached to
the rotor winding over which the brushes pass), and
the brushes themselves.
Not suitable in very clean environment.
**vulnerable to dust which decreases performance.