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Autonomous Pointing Control of a Large Satellite Antenna Subject to Parametric Uncertainty
With the development of satellite mobile communications, large antennas are now widely used. The precise pointing of the antenna’s optical axis is essential for many space missions. This paper addresses the challenging problem of high-precision autonomous pointing control of a large satellite antenn...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5375846/ https://www.ncbi.nlm.nih.gov/pubmed/28287450 http://dx.doi.org/10.3390/s17030560 |
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author | Wu, Shunan Liu, Yufei Radice, Gianmarco Tan, Shujun |
author_facet | Wu, Shunan Liu, Yufei Radice, Gianmarco Tan, Shujun |
author_sort | Wu, Shunan |
collection | PubMed |
description | With the development of satellite mobile communications, large antennas are now widely used. The precise pointing of the antenna’s optical axis is essential for many space missions. This paper addresses the challenging problem of high-precision autonomous pointing control of a large satellite antenna. The pointing dynamics are firstly proposed. The proportional–derivative feedback and structural filter to perform pointing maneuvers and suppress antenna vibrations are then presented. An adaptive controller to estimate actual system frequencies in the presence of modal parameters uncertainty is proposed. In order to reduce periodic errors, the modified controllers, which include the proposed adaptive controller and an active disturbance rejection filter, are then developed. The system stability and robustness are analyzed and discussed in the frequency domain. Numerical results are finally provided, and the results have demonstrated that the proposed controllers have good autonomy and robustness. |
format | Online Article Text |
id | pubmed-5375846 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-53758462017-04-10 Autonomous Pointing Control of a Large Satellite Antenna Subject to Parametric Uncertainty Wu, Shunan Liu, Yufei Radice, Gianmarco Tan, Shujun Sensors (Basel) Article With the development of satellite mobile communications, large antennas are now widely used. The precise pointing of the antenna’s optical axis is essential for many space missions. This paper addresses the challenging problem of high-precision autonomous pointing control of a large satellite antenna. The pointing dynamics are firstly proposed. The proportional–derivative feedback and structural filter to perform pointing maneuvers and suppress antenna vibrations are then presented. An adaptive controller to estimate actual system frequencies in the presence of modal parameters uncertainty is proposed. In order to reduce periodic errors, the modified controllers, which include the proposed adaptive controller and an active disturbance rejection filter, are then developed. The system stability and robustness are analyzed and discussed in the frequency domain. Numerical results are finally provided, and the results have demonstrated that the proposed controllers have good autonomy and robustness. MDPI 2017-03-10 /pmc/articles/PMC5375846/ /pubmed/28287450 http://dx.doi.org/10.3390/s17030560 Text en © 2017 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 Wu, Shunan Liu, Yufei Radice, Gianmarco Tan, Shujun Autonomous Pointing Control of a Large Satellite Antenna Subject to Parametric Uncertainty |
title | Autonomous Pointing Control of a Large Satellite Antenna Subject to Parametric Uncertainty |
title_full | Autonomous Pointing Control of a Large Satellite Antenna Subject to Parametric Uncertainty |
title_fullStr | Autonomous Pointing Control of a Large Satellite Antenna Subject to Parametric Uncertainty |
title_full_unstemmed | Autonomous Pointing Control of a Large Satellite Antenna Subject to Parametric Uncertainty |
title_short | Autonomous Pointing Control of a Large Satellite Antenna Subject to Parametric Uncertainty |
title_sort | autonomous pointing control of a large satellite antenna subject to parametric uncertainty |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5375846/ https://www.ncbi.nlm.nih.gov/pubmed/28287450 http://dx.doi.org/10.3390/s17030560 |
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