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Title: Attitude control of magnetically actuated satellites with an uneven inertia distribution
Authors: Wood, Mark
Chen, Wen-Hua
Keywords: Magnetic attitude control
Satellite
PID control
Feed-forward
Underactuated control
Issue Date: 2011
Publisher: © Elsevier Masson SAS
Citation: WOOD, M. and CHEN, W-H, 2011. Attitude control of magnetically actuated satellites with an uneven inertia distribution. Aerospace Science and Technology, 25 (1), pp. 29–39.
Abstract: This paper addresses magnetic attitude control of a satellite with one axis of inertia significantly lower than that of the other two. With onboard resources often limited, this paper considers the development of an effective control strategy that remains easy to implement. Often used in this type of application, the classical ‘torque-projection’ approach is shown to be unsuitable for satellites with an uneven inertia distribution. To tackle the weaknesses in this approach a new ‘weighted’ PD approach is proposed, with the control torque determined through minimization of a simple cost function. Through a similar philosophy, a feed-forward compensator is designed to supplement the feedback control and improve the disturbance rejection characteristics of the controller. Floquet analysis is used to verify stability of the control strategy for the nominal case and satellites with uncertainties. Simulations carried out on a high fidelity model demonstrate the effectiveness of the proposed control law and the significant performance benefits offered over existing approaches.
Description: This article was published in the journal, Aerospace Science and Technology [© Elsevier Masson SAS]. The definitive version is available at: http://dx.doi.org/10.1016/j.ast.2011.12.005
Version: Accepted for publication
DOI: 10.1016/j.ast.2011.12.005
URI: https://dspace.lboro.ac.uk/2134/11140
Publisher Link: http://dx.doi.org/10.1016/j.ast.2011.12.005
ISSN: 1270-9638
Appears in Collections:Published Articles (Aeronautical and Automotive Engineering)

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