Motors

Motors are machines which convert electrical energy to mechanical energy. Drones require motors to create necessary thrust during flight. In drones, small Direct Current (DC) motors are used to achieve flight.

There are 3 types of DC motors:

  • Stepper motor

  • Brushless DC

  • Brushed DC



STEPPER MOTOR:

Advantages:

  • Accurate position control

  • Excellent low speed torque

  • Long Life

Disadvantages:

  • Low efficiency

  • Prone to resonance noise and cannot accelerate loads

BRUSHED MOTOR:

Advantages:

  • Economical and Simplest to use

  • Speed linear to applied voltage

  • Simple motor control

Disadvantages:

  • High maintenance

  • Short life span

BRUSHLESS DC MOTOR:

Advantages:

  • High efficiency

  • Little to no maintenance

  • High output power per frame size

Disadvantages:

  • More complicated motor

  • Large initial costs