Wu, S., Liu, Y., Radice, G. and Tan, S. (2017) Autonomous pointing control of a large satellite antenna subject to parametric uncertainty. Sensors, 17(3), 560. (doi: 10.3390/s17030560) (PMID:28287450)
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Abstract
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.
| Item Type: | Articles |
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| Additional Information: | This work is supported by the National Natural Science Foundation of China (11502040 & 11572069), and the Fundamental Research Funds for the Central Universities (DUT15LK31 & DUT15RC(4)38). |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Radice, Dr Gianmarco and Wu, Dr Shunan |
| Authors: | Wu, S., Liu, Y., Radice, G., and Tan, S. |
| College/School: | College of Science and Engineering > School of Engineering College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity |
| Journal Name: | Sensors |
| Publisher: | MDPI |
| ISSN: | 1424-8220 |
| ISSN (Online): | 1424-8220 |
| Published Online: | 10 March 2017 |
| Copyright Holders: | Copyright © 2017 The Authors |
| First Published: | First published in Sensors 17(3):560 |
| Publisher Policy: | Reproduced under a Creative Commons License |
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