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Proceedings Paper

Error dispersion algorithms to improve the precision of angle detection for the optical encoder
Author(s): Yuji Matsuzoe; Nobuhiko Tsuji; Toru Yoshizawa
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Paper 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.

Paper Details

Date Published: 2 November 2000
PDF: 8 pages
Proc. SPIE 4113, Algorithms and Systems for Optical Information Processing IV, (2 November 2000); doi: 10.1117/12.405855
Show Author Affiliations
Yuji Matsuzoe, Fuji Electric Co., Ltd. (Japan)
Nobuhiko Tsuji, Fuji Electric Co., Ltd. (Japan)
Toru Yoshizawa, Tokyo Univ. of Agriculture and Technology (Japan)


Published in SPIE Proceedings Vol. 4113:
Algorithms and Systems for Optical Information Processing IV
Bahram Javidi; Demetri Psaltis, Editor(s)

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