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Modeling and Calibration for Dithering of MDRLG and Time-Delay of Accelerometer in SINS
At present, the design and manufacturing technology of mechanically dithered ring laser gyroscope (MDRLG) have matured, the strapdown inertial navigation systems (SINS) with MDRLG have been widely used in military and business scope. When the MDRLG is working, high-frequency dithering is introduced,...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8749594/ https://www.ncbi.nlm.nih.gov/pubmed/35009818 http://dx.doi.org/10.3390/s22010278 |
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author | Xing, Jinlong Yang, Gongliu Cai, Tijing |
author_facet | Xing, Jinlong Yang, Gongliu Cai, Tijing |
author_sort | Xing, Jinlong |
collection | PubMed |
description | At present, the design and manufacturing technology of mechanically dithered ring laser gyroscope (MDRLG) have matured, the strapdown inertial navigation systems (SINS) with MDRLG have been widely used in military and business scope. When the MDRLG is working, high-frequency dithering is introduced, which will cause the size effect error of the accelerometer. The accelerometer signal has a time delay relative to the system, which will cause the accelerometer time delay error. In this article, in order to solve the above-mentioned problem: (1) we model the size effect error of the mechanically dithering of the MDRLG and perform an error analysis for the size effect error of the mechanically dithering of the MDRLG; (2) we model the time delay error of accelerometer and perform an error analysis for the time delay error of accelerometer; (3) we derive a continuous linear 43-D SINS error model considering the above-mentioned two error parameters and expand the temperature coefficients of accelerometers, inner lever arm error, outer lever arm error parameters to achieve high-precision calibration of SINS. We use the piecewise linear constant system (PWCS) method during the calibration process to prove that all calibration parameters are observable. Finally, the SINS with MDRLG is used in laboratory conditions to test the validity of the calibration method. |
format | Online Article Text |
id | pubmed-8749594 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-87495942022-01-12 Modeling and Calibration for Dithering of MDRLG and Time-Delay of Accelerometer in SINS Xing, Jinlong Yang, Gongliu Cai, Tijing Sensors (Basel) Article At present, the design and manufacturing technology of mechanically dithered ring laser gyroscope (MDRLG) have matured, the strapdown inertial navigation systems (SINS) with MDRLG have been widely used in military and business scope. When the MDRLG is working, high-frequency dithering is introduced, which will cause the size effect error of the accelerometer. The accelerometer signal has a time delay relative to the system, which will cause the accelerometer time delay error. In this article, in order to solve the above-mentioned problem: (1) we model the size effect error of the mechanically dithering of the MDRLG and perform an error analysis for the size effect error of the mechanically dithering of the MDRLG; (2) we model the time delay error of accelerometer and perform an error analysis for the time delay error of accelerometer; (3) we derive a continuous linear 43-D SINS error model considering the above-mentioned two error parameters and expand the temperature coefficients of accelerometers, inner lever arm error, outer lever arm error parameters to achieve high-precision calibration of SINS. We use the piecewise linear constant system (PWCS) method during the calibration process to prove that all calibration parameters are observable. Finally, the SINS with MDRLG is used in laboratory conditions to test the validity of the calibration method. MDPI 2021-12-30 /pmc/articles/PMC8749594/ /pubmed/35009818 http://dx.doi.org/10.3390/s22010278 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Xing, Jinlong Yang, Gongliu Cai, Tijing Modeling and Calibration for Dithering of MDRLG and Time-Delay of Accelerometer in SINS |
title | Modeling and Calibration for Dithering of MDRLG and Time-Delay of Accelerometer in SINS |
title_full | Modeling and Calibration for Dithering of MDRLG and Time-Delay of Accelerometer in SINS |
title_fullStr | Modeling and Calibration for Dithering of MDRLG and Time-Delay of Accelerometer in SINS |
title_full_unstemmed | Modeling and Calibration for Dithering of MDRLG and Time-Delay of Accelerometer in SINS |
title_short | Modeling and Calibration for Dithering of MDRLG and Time-Delay of Accelerometer in SINS |
title_sort | modeling and calibration for dithering of mdrlg and time-delay of accelerometer in sins |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8749594/ https://www.ncbi.nlm.nih.gov/pubmed/35009818 http://dx.doi.org/10.3390/s22010278 |
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