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Output Feedback for Attitude Control of Fractional-Order H_∞ Chaotic Satellite Systems Subject to Input Saturation with Disturbance Attenuation
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Mohammad Fiuzy   , Saeed Shamaghdari * |
| Iran university of Science and Technology , shamaghdari@iust.ac.ir |
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Abstract: (154 Views) |
Satellites attitude control based on their mission always is one of the main challenges in attitude control. Actually, in a certain class of satellites when satellites placed in a predetermined attitude or axis, sometimes an oscillating or chaotic behavior occurs, therefore, various models have been presented to analyze of this class. In this paper, H∞ Robust output feedback control under saturation is designed for this class of satellites that are also under external disturbance. The main point in this paper actually is design of the static output feedback (SOF) controller in the mentioned conditions in the form of solving a linear matrix inequality (LMI) problem. Then, in the same way, the stable region (B∈) based on Lyapunov's theorem is obtained, which finally enlarges the region of attraction (ROA) for this control system. The proposed method was implemented on the presented model and the results showed that in addition to the appropriate speed of the system states in convergence, the control signal did not enter the saturation area and the system has become stable with the least cost and energy. The procedure design of output feedback controller is specified in the form of pseudo-code.
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Article number: 5 |
| Keywords: fractional chaotic satellite systems, output feedback, H_∞ index, input saturation, Lyapunov method, Robust stability |
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Full-Text [PDF 10496 kb]
(50 Downloads)
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Type of Study: Research |
Subject:
Robust and Optimal Control
Received: 2023/01/16 | Accepted: 2024/09/9 | Published: 2024/09/17
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