Video: How Stepper Motor Works?

How does a robotic arm in a production plant repeat exactly the same movements over and over again? How can you move an automatic milling machine so precisely? It is available with stepper motor.
What is special about the stepper motor. It is that it can control the angular position the rotor without closed loop feedback.

Let us see the working of a variable reluctance motor, that is the kind of step by simple step motor. Then we turn to hybrid stepper motor, a type of more accurate and used motor.

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