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Proceedings Paper

New sense-finding and subdividing technique for high speed moire fringes
Author(s): Huaiqiong Li; Qian Chen; Canlin Zhang
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Paper Abstract

A new sense-finding and subdividing technique based on high speed Moire fringes is presented in this paper. Direct Current(DC) component and drift are picked-up by using of Field Programmable Gate Array (FPGA), and the input signal of sense-finding is corrected. The motion sense-finding of Moire fringes and four folds Moire fringes subdivision are completed. With the aid of high speed Central Processing Unit (CPU), the new synthetic trigonometric function is reconstructed by software. Combining with synthetic trigonometric function and original input signals, the quadrant location of synthetic trigonometric function is confirmed. The precision sense-finding and high-precision subdividing for Moire fringes are completed by division of synthetic trigonometric function range. The high speed and high-precision measurement based on Moire fringes is implemented.

Paper Details

Date Published: 19 May 2006
PDF: 5 pages
Proc. SPIE 6150, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 615025 (19 May 2006); doi: 10.1117/12.676536
Show Author Affiliations
Huaiqiong Li, Nanjing Univ. of Science and Technology (China)
Qian Chen, Nanjing Univ. of Science and Technology (China)
Canlin Zhang, Nanjing Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 6150:
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Xun Hou; Jiahu Yuan; James C. Wyant; Hexin Wang; Sen Han, Editor(s)

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