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| Robust and fault-tolerant spacecraft attitude control based on an extended-observer design |
| AlessandroGiuseppi1,FrancescoDelliPriscoli1,AntonioPietrabissa1 |
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| (1 Department of Computer, Control and Management Engineering, La Sapienza, University of Rome, Via Ariosto 25, Rome 00185, Italy) |
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| 摘要: |
| The aim of this work is to develop a robust control strategy able to drive the attitude of a spacecraft to a reference value,
despite the presence of unknown but bounded uncertainties in the system parameters and external disturbances. Thanks to
the use of an extended observer design, the proposed control law is robust against all the uncertainties that affect the highfrequency
gain matrix, which is shown to capture a broad spectrum of modelling issues, some of which are often neglected by
traditional approaches. The proposed controller then provides robustness against parametric uncertainties, as moment of inertia
estimation, payload deformations, actuator faults and external disturbances, while maintaining its asymptotic properties. |
| 关键词: Extended observer · Spacecraft control · Attitude stabilization |
| DOI：https://doi.org/10.1007/s11768-022-00101-2 |
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| 基金项目:Open access funding provided by Università degli Studi di Roma La Sapienza within the CRUI-CARE Agreement. |
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| Robust and fault-tolerant spacecraft attitude control based on an extended-observer design |
| Alessandro Giuseppi1,Francesco Delli Priscoli1,Antonio Pietrabissa1 |
| (1 Department of Computer, Control and Management Engineering, La Sapienza, University of Rome, Via Ariosto 25, Rome 00185, Italy) |
| Abstract: |
| The aim of this work is to develop a robust control strategy able to drive the attitude of a spacecraft to a reference value,
despite the presence of unknown but bounded uncertainties in the system parameters and external disturbances. Thanks to
the use of an extended observer design, the proposed control law is robust against all the uncertainties that affect the highfrequency
gain matrix, which is shown to capture a broad spectrum of modelling issues, some of which are often neglected by
traditional approaches. The proposed controller then provides robustness against parametric uncertainties, as moment of inertia
estimation, payload deformations, actuator faults and external disturbances, while maintaining its asymptotic properties. |
| Key words: Extended observer · Spacecraft control · Attitude stabilization |
