# High-precision Incremental Encoder

Incremental encoders are undergo periodic grating displacement conversion to electrical signals, and then converts the electrical signal into a pulse, pulse the number means that the displacement size. The grating composed of periodic grooves by calculating the number of increments starting at some point (measurement step number) access to location information. This module to measure high-precision incremental HEIDENHAIN rotary encoder grating are engraved with distance-coded reference point track, accelerated reference points back to zero. Figure 1 below for a circular grating with distance coding.

These reference points are mathematical algorithm to determine the distance of each other. After two of three reference points, and subsequent electronic device will be able to find the absolute reference point.