High-performance position evaluation of optical encoders via a CORDIC algorithm and oversampling techniques on an FPGA
Ch. Groling, Yaser Daaboul, Michael Patrick Lux, T. Orlik, Walter Schumacher · European Conference on Power Electronics and Applications · 2009
This paper illustrates a novel approach to obtain an improved position signal from optical encoders. The approach is based on an FPGA implementation of a CORDIC algorithm used for demodulation of the track signals. Due to fast demodulation, oversampling techniques can be used to considerably improve the position signal.