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Proceedings Paper

Conjugate gradient optimum algorithm study of non-linear correction for one-dimension PSD
Author(s): Changtao Mo; Xin Du; Li-li Zhang; Ming Wang
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Paper Abstract

The position sensitive detector (PSD) is a kind of photo-electronic sensor which can detect the position of a light spot incident on its surface. Many types of non-contact dynamic displacement monitoring instruments could be constructed using PSD. How to overcome the influence of non-linearity action is the most important problem to improve measuring precision and reliability of the instrument. The causes of non-1inearity of PSD are analyzed in this paper. Conjugate gradient optimum algorithm for nerve network to correct the non-linearity of PSD is provided according to whose characteristic, so that the linearity of non-linear area is approximate identical to linear area's .The correction leads to prominent improvement of measurement precision for non-linear area, and the usable area of PSD is thus extended. The data reliability is also improved without increasing the complexity of hardware.

Paper Details

Date Published: 20 May 2009
PDF: 4 pages
Proc. SPIE 7283, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 72830S (20 May 2009); doi: 10.1117/12.828616
Show Author Affiliations
Changtao Mo, Harbin Univ. of Commerce (China)
Xin Du, Harbin Univ. of Commerce (China)
Li-li Zhang, Harbin Univ. of Commerce (China)
Ming Wang, Harbin Univ. of Commerce (China)


Published in SPIE Proceedings Vol. 7283:
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Yudong Zhang; James C. Wyant; Robert A. Smythe; Hexin Wang, Editor(s)

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