Incremental rotary encoder directly uses photoelectric conversion principle to output three sets of square wave pulsesA BandZPhase;A BPhase difference of Two-feed pulsesNinetyDegree,ZThe phase is one pulse per revolution for base point location.
It has the advantages of simple principle, simple structure, over tens of thousands of hours of average mechanical life, strong anti-interference ability and high reliability. It is suitable for long distance transmission. Its disadvantage is that it can not output the absolute position of axis rotation.
