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High-precision controller using LMI method for three-axis flexible satellite attitude stabilisation
Published online by Cambridge University Press: 07 February 2023
Abstract
This paper considers the problem of a three-axis flexible satellite attitude stabilisation subject to the vibration of flexible appendages and external environmental disturbances, which affect the rigid body motion. To solve this problem, a disturbance observer is proposed to estimate and thereby reject the flexible appendage vibration. Based on the H∞ and Linear Matrix Inequality (LMI) approach, a controller for spacecraft with flexible appendages is proposed to ensure robustness as well as attitude stability with high precision. Stability analysis of the overall closed-loop system is provided via the Lyapunov method. The simulation results of three-axis flexible spacecraft demonstrate the robustness and effectiveness of the proposed method.
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- Research Article
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- © The Author(s), 2023. Published by Cambridge University Press on behalf of Royal Aeronautical Society
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