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Proceedings Paper

Study on self-calibration angle encoder using simulation method
Author(s): Yan Wang; Zi Xue; Yao Huang; Xiaona Wang
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Paper Abstract

The angle measurement technology is very important in precision manufacture, optical industry, aerospace, aviation and navigation, etc. Further, the angle encoder, which uses concept ‘subdivision of full circle (2π rad=360°)’ and transforms the angle into number of electronic pulse, is the most common instrument for angle measurement. To improve the accuracy of the angle encoder, a novel self-calibration method was proposed that enables the angle encoder to calibrate itself without angle reference. An angle deviation curve among 0° to 360° was simulated with equal weights Fourier components for the study of the self-calibration method. In addition, a self-calibration algorithm was used in the process of this deviation curve. The simulation result shows the relationship between the arrangement of multi-reading heads and the Fourier components distribution of angle encoder deviation curve. Besides, an actual self-calibration angle encoder was calibrated by polygon angle standard in national institute of metrology, China. The experiment result indicates the actual self-calibration effect on the Fourier components distribution of angle encoder deviation curve. In the end, the comparison, which is between the simulation self-calibration result and the experiment self-calibration result, reflects good consistency and proves the reliability of the self-calibration angle encoder.

Paper Details

Date Published: 26 January 2016
PDF: 7 pages
Proc. SPIE 9903, Seventh International Symposium on Precision Mechanical Measurements, 99032O (26 January 2016); doi: 10.1117/12.2217638
Show Author Affiliations
Yan Wang, China Jiliang Univ. (China)
Zi Xue, National Institute of Metrology (China)
Yao Huang, National Institute of Metrology (China)
Xiaona Wang, China Jiliang Univ. (China)

Published in SPIE Proceedings Vol. 9903:
Seventh International Symposium on Precision Mechanical Measurements
Liandong Yu, Editor(s)

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