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Weihai IDENCODER Electronic Technology Co.,Ltd



E-mail: fangshuwei@idencoder.net

Address:Building 1,the fourth Industry Park ,Weihai China


Incremental encoders (Rotary type) working principle:

By a Center has axis of light code disc, its Shang has ring pass, and dark of carved line, has photoelectric launches and received devices read, get four group sine wave signal combination into a,, and b, and c, and d, each sine wave difference 90 degrees phase (phase for a cycle for 360 degrees), will c, and d signal reverse, overlay in a,, and b two-phase Shang, can enhanced stable signal; another each turned output a z phase Pulse to representative zero bit reference bit. Due to the phase difference of 90 degrees a and b, by comparing a is before b before, forward and reverse to distinguish an encoder, through zero-pulse encoder zero position references are available.