Regular Papers

International Journal of Control, Automation, and Systems 2024; 22(7): 2095-2107

https://doi.org/10.1007/s12555-022-0707-2

© The International Journal of Control, Automation, and Systems

Observer-based Attitude Maneuver Control of Flexible Spacecraft: A Parametric Approach

Liu Zhang, Quan-Zhi Liu, Guo-Wei Fan*, Xue-Ying Lv, Yu Gao, and Yang Xiao

Jilin University

Abstract

To address the problem of control performance degradation caused by flexible attachment vibrations and external disturbances during attitude maneuvering of flexible spacecraft, this paper proposes a parametric method for improving flexible spacecraft attitude maneuver control (AMC) based on a functional observer. The objective was to enhance the control accuracy and disturbance rejection. First, state expansion was carried out for flexible spacecraft systems affected by disturbances. A functional observer was designed for the system, and sufficient conditions for the existence of the observer were obtained. Furthermore, a controller was designed by using the state information of the observer, which included state feedback and feed-forward compensation. Based on the parametric solution of a class of generalized Sylvester equations (GSEs), the parametric expressions of the controller and observer were established. Finally, a numerical example of a flexible spacecraft proved the effectiveness of the design method. The method can effectively suppress flexible vibrations and external disturbances while also meeting the high-precision control requirements of the flexible spacecraft.

Keywords Attitude control, flexible spacecraft, functional observer, parametric approach.

Article

Regular Papers

International Journal of Control, Automation, and Systems 2024; 22(7): 2095-2107

Published online July 1, 2024 https://doi.org/10.1007/s12555-022-0707-2

Copyright © The International Journal of Control, Automation, and Systems.

Observer-based Attitude Maneuver Control of Flexible Spacecraft: A Parametric Approach

Liu Zhang, Quan-Zhi Liu, Guo-Wei Fan*, Xue-Ying Lv, Yu Gao, and Yang Xiao

Jilin University

Abstract

To address the problem of control performance degradation caused by flexible attachment vibrations and external disturbances during attitude maneuvering of flexible spacecraft, this paper proposes a parametric method for improving flexible spacecraft attitude maneuver control (AMC) based on a functional observer. The objective was to enhance the control accuracy and disturbance rejection. First, state expansion was carried out for flexible spacecraft systems affected by disturbances. A functional observer was designed for the system, and sufficient conditions for the existence of the observer were obtained. Furthermore, a controller was designed by using the state information of the observer, which included state feedback and feed-forward compensation. Based on the parametric solution of a class of generalized Sylvester equations (GSEs), the parametric expressions of the controller and observer were established. Finally, a numerical example of a flexible spacecraft proved the effectiveness of the design method. The method can effectively suppress flexible vibrations and external disturbances while also meeting the high-precision control requirements of the flexible spacecraft.

Keywords: Attitude control, flexible spacecraft, functional observer, parametric approach.

IJCAS
July 2024

Vol. 22, No. 7, pp. 2055~2340

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