Calibration of Rotary Encoders Using a Shift-Angle Method

Cross-calibration using an autocollimator and a polygon is the traditional method for calibrating rotary encoder. These angles, which can be calibrated this method, are limited by pitch angle of polygon, 15° 24-faced polygon. In work, we propose new shift-angle same setup as method. However, measure smaller than measurement limitation The proposed calibrate every experiment, use to SelfA encoder verify encoder, comprises one 12 read heads, self-calibration. difference between calibration results obtained applying these two methods ±0.1″.