What is an optical encoder?

It is a light source that illuminates a linear scale where the reflected light is collected by a detector. The incremental reading is translated into a physical value giving the system position [...]

What is a rotary encoder?

This is an encoder measuring the rotation inside a DC motor which drives the moving platform. It is a cost-effective solution for closed-loop systems, but as it is an in-direct measurement it [...]

What is a closed loop system?

For motion components with a position detector a commanded position or motion profile is corrected by measuring the deviation of the current position from the target position. For such system a [...]

What is repeatability?

Defined as the statistical value of the error bandwidth of a commanded position for a positioning component or system. There are several ways to measure this and can be further divided into [...]