It's just that their speed varies least from no load to full load of all ac-induction motors. Other induction-motor types don't even come close to matching the speed regulation of these motors. Yet, ...

Unidrive SP includes an encoder-equipped ac induction motor that accurately controls speed and position for a wide range of loads. Features & benefits Unidrive SP includes an encoder-equipped ac ...

DC Motors were king in industry up until the late 1980s; These motors were popular because they were able to run to a variable speed setpoint, and they could run at full torque from stall to base ...