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Improving Angular Accuracy of a Scanning Mirror Based on Error Modeling and Correction
Scanning mirrors appear to be key components in optoelectronic systems for line-of-sight (LOS) stabilization. For improving the angular accuracy of a scanning mirror based on the eddy current displacement sensor measurement, an angular error-correction method is proposed and demonstrated. A mathemat...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6359616/ https://www.ncbi.nlm.nih.gov/pubmed/30658462 http://dx.doi.org/10.3390/s19020367 |
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author | Fan, Yue Ma, Wenli Jiang, Ping Huang, Jinlong Chen, Kewei Pan, Nian |
author_facet | Fan, Yue Ma, Wenli Jiang, Ping Huang, Jinlong Chen, Kewei Pan, Nian |
author_sort | Fan, Yue |
collection | PubMed |
description | Scanning mirrors appear to be key components in optoelectronic systems for line-of-sight (LOS) stabilization. For improving the angular accuracy of a scanning mirror based on the eddy current displacement sensor measurement, an angular error-correction method is proposed and demonstrated. A mathematic angular error model with physical parameters was developed, and the cross-validation method was employed to determine the reasonable order of the Maclaurin series used in the error model, which increased the exactitude and robustness of the correction method. The error parameters were identified by accurately fitting the calibrated angular errors with the error model, which showed excellent error prediction performance. Based on the angular calculation model corrected by the error model, the closed-loop control system was established to obtain accurate deflection angles. Experimental results show that within the deflection angle of ±1.5 deg, the angular accuracy was improved from 0.28 deg to less than 1.1 arcsec, and the standard deviation for six measurements was less than 1.2 arcsec, which indicates that the angle correction method was effective in improving the linearity of the eddy current sensors and reducing the influence of manufacturing and installation errors. |
format | Online Article Text |
id | pubmed-6359616 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-63596162019-02-06 Improving Angular Accuracy of a Scanning Mirror Based on Error Modeling and Correction Fan, Yue Ma, Wenli Jiang, Ping Huang, Jinlong Chen, Kewei Pan, Nian Sensors (Basel) Article Scanning mirrors appear to be key components in optoelectronic systems for line-of-sight (LOS) stabilization. For improving the angular accuracy of a scanning mirror based on the eddy current displacement sensor measurement, an angular error-correction method is proposed and demonstrated. A mathematic angular error model with physical parameters was developed, and the cross-validation method was employed to determine the reasonable order of the Maclaurin series used in the error model, which increased the exactitude and robustness of the correction method. The error parameters were identified by accurately fitting the calibrated angular errors with the error model, which showed excellent error prediction performance. Based on the angular calculation model corrected by the error model, the closed-loop control system was established to obtain accurate deflection angles. Experimental results show that within the deflection angle of ±1.5 deg, the angular accuracy was improved from 0.28 deg to less than 1.1 arcsec, and the standard deviation for six measurements was less than 1.2 arcsec, which indicates that the angle correction method was effective in improving the linearity of the eddy current sensors and reducing the influence of manufacturing and installation errors. MDPI 2019-01-17 /pmc/articles/PMC6359616/ /pubmed/30658462 http://dx.doi.org/10.3390/s19020367 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Fan, Yue Ma, Wenli Jiang, Ping Huang, Jinlong Chen, Kewei Pan, Nian Improving Angular Accuracy of a Scanning Mirror Based on Error Modeling and Correction |
title | Improving Angular Accuracy of a Scanning Mirror Based on Error Modeling and Correction |
title_full | Improving Angular Accuracy of a Scanning Mirror Based on Error Modeling and Correction |
title_fullStr | Improving Angular Accuracy of a Scanning Mirror Based on Error Modeling and Correction |
title_full_unstemmed | Improving Angular Accuracy of a Scanning Mirror Based on Error Modeling and Correction |
title_short | Improving Angular Accuracy of a Scanning Mirror Based on Error Modeling and Correction |
title_sort | improving angular accuracy of a scanning mirror based on error modeling and correction |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6359616/ https://www.ncbi.nlm.nih.gov/pubmed/30658462 http://dx.doi.org/10.3390/s19020367 |
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