LIU Han-ping~. Evaluation of interpolation errors of optical-electric encoders based on the fitted curves of Lissajous[J]. 2006, (2): 70-72. DOI: 10.13873/j.1000-97872006.02.024.
In order to reduce the time of evaluating the interpolation errors of optical-electric encoders
a method of curves fitting of the Lissajous is proposed.Sampling two photoelectric trigonal wave signals of optical-electric encoders with a phase difference of π/2
and then the two signals are processed to Lissajous signal.This Lissajous signal is fitted by numerical function curves
meanwhile the degree of fitting for regression equation is evaluated.With the numerical function curves
errors of interpolation are obtained.The final experiment results validate the numerical function curves model.