What does a revolution sensor do?

A revolution sensor, often referred to as a rotary encoder, measures the rotational position of a shaft or axle. It converts the angular position or motion into an electrical signal, which can then be interpreted by a control system. This type of sensor is widely used in robotics, industrial machinery, and automotive applications to monitor speed, direction, and distance traveled. By providing precise feedback on rotational movement, it plays a critical role in motion control and automation systems.