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Proceedings Paper

Geometrical error correction research in high precision 2D laser measuring instrument
Author(s): Xiao-man Zhang; Zi Xue
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Paper Abstract

A high precision 2-D laser measuring instrument is designed to meet the needs of high precision measurement. Through the error analysis of the measuring system, the geometrical errors show certain stability in the results. Geometrical correction methods are intensively researched. The angle between two axes of the measured plate and axes of the instrument produces deviations of coordinates X and Y of the points on the plate. Different coordinate systems are not roughly aligned. An inclined correction model is proposed to compensate the deviations and transform the coordinate systems. Then the perpendicular compensation model is proposed using the least square approximation method and the relationship between the coordinates X and Y. To reduce the effect of random error and other geometrical errors, a multi-position correction algorithm is presented through two different measuring positions. The measurement results verify that these methods and models are accurate and feasible.

Paper Details

Date Published: 28 December 2010
PDF: 8 pages
Proc. SPIE 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 75446O (28 December 2010); doi: 10.1117/12.885566
Show Author Affiliations
Xiao-man Zhang, China Jiliang Univ. (China)
Zi Xue, National Institute of Metrology (China)

Published in SPIE Proceedings Vol. 7544:
Sixth International Symposium on Precision Engineering Measurements and Instrumentation
Jiubin Tan; Xianfang Wen, Editor(s)

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