Research on the Method of Signal Phase Automatic Compensation for Photoelectric Encoder
Ren Feng · Journal of Changchun University of Science and Technology · 2012
A method to automatically compensate the signal phase for photoelectric encoder base on phase shifter is provied.This method carries the automatic compensation of signal phase by using FPGA(Field Programmable Gate Array) to control digital potentiometers which replace the traditional method of using manual changing resistance.The design principles;hardware circuit and algorithm are introduced simply.The tested results show that this method is effective to improve the measurement accuracy of optical encoder,and a good real-time compensatory.