Advantages and Tradeoffs of Encoder Technologies

Rotary encoders are key components in the motion-control feedback loop of a variety of applications, including industrial automation equipment and process control, robotics, medical devices, energy, aerospace, and more. As devices that translate mechanical motion into electrical signals, encoders provide engineers with essential data, such as position, speed, distance, and direction that can be used to optimize the performance of their overall system.

Source: Advantages and Tradeoffs of Encoder Technologies | DigiKey