Error dispersion algorithms to improve the precision of angle detection for the optical encoder

Yuji Matsuzoe; Nobuhiko Tsuji; Toru Yoshizawa

doi:10.1117/12.405855

2 November 2000 Error dispersion algorithms to improve the precision of angle detection for the optical encoder

Yuji Matsuzoe, Nobuhiko Tsuji, Toru Yoshizawa

Proceedings Volume 4113, Algorithms and Systems for Optical Information Processing IV; (2000) https://doi.org/10.1117/12.405855
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

We have applied the interference fringe scanning algorithms that are used in interference fringe analysis to an optical encoder as angle detection algorithms, in order to disperse the influence of sinusoid wave distortion from the encoder's photo detector. We also evaluated these algorithms with the analytical system and techniques for obtaining the same output signal as that of the actual encoder, by using image data on light intensity as the light permeates the slit disk of the encoder. As a result, we obtained about twice the angle precision by applying the algorithms to the optical encoder.

Citation Download Citation

Yuji Matsuzoe, Nobuhiko Tsuji, and Toru Yoshizawa "Error dispersion algorithms to improve the precision of angle detection for the optical encoder", Proc. SPIE 4113, Algorithms and Systems for Optical Information Processing IV, (2 November 2000); https://doi.org/10.1117/12.405855

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