AC motors include single, multiphase, universal, induction, synchronous, and gear motors.

Motor controllers receive supply voltages and provide signals to motor drives that are interfaced to motors.

DC motors are most commonly used in variable speed and torque applications.

Motor speed controllers are electronic devices that control motor speed.

Gearmotors consist of an AC or DC motor with an integral gearbox or gear head that steps delivered speed up or down

AC motor drives interface controllers to AC motors.

AC servomotors are responsive, high-acceleration motors typically constructed as permanent magnet synchronous motors