A servomechanism, or servo, is an automatic device that uses error-sensing negative feedback to correct the performance of a mechanism.

The term correctly applies only to systems where the feedback or error-correction signals help control mechanical position, speed or other parameters. For example, a car's cruise control uses closed loop feedback, which classifies it as a servomechanism. An automatic power window control on that same car is not a servomechanism, as there is no automatic feedback that controls position – the operator does this by observation.

Danaher Motion leverages vast experience in electromagnetic, mechanical, and control technologies to help customers build better machines, faster.

Kollmorgen is a leading provider of motion systems and components for original equipment manufacturers (OEMs) with expertise in linking and integrating standard and custom products.

Schneider Electric helps you make the most of your energy with solutions to make energy safe, reliable, efficient, productive and green from plant to plug.

Animatics makes highly reliable machine building from simple two-axis pick and place applications to installations of more than 1,000 servos instantly synchronized in coordinated motion.