How a Servo Motor Works (The Motor That Fixes Its Own Mistakes)

A servo motor is an ordinary motor plus a sensor and a controller that keep correcting it. This video shows the loop in action: the target moves, the error appears, the motor chases it, overshoots, and settles.

You'll see what the encoder actually measures, how the control loop turns error into torque, and why a servo can hold a position against a load that a stepper would lose.

In this video

• What closed-loop control means
• What the encoder measures and how often
• Overshoot, settling and holding torque
• Servo versus stepper: when to use which