Finite-time Attitude Coordinated Control for Spacecraft Formation Flying Using Consensus Algorithm

For the spacecraft formation flying system with unknown external disturbances and model uncertainties, a finite-time attitude coordinated control law is proposed based on consensus theory. Firstly, a disturbance observer is developed to estimate generalized disturbances consisting of external distur...

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Bibliographic Details
Published in2021 40th Chinese Control Conference (CCC) pp. 5044 - 5049
Main Authors Xie, Xiong, Sheng, Tao, Chen, Zhijun, He, Liang
Format Conference Proceeding
LanguageEnglish
Published Technical Committee on Control Theory, Chinese Association of Automation 26.07.2021
Subjects
Attitude control
Attitude cooperative control
Consensus algorithm
Consensus control
Estimation error
Finite-time control
Finite-time disturbance observer
Simulation
Space vehicles
Spacecraft formation flying
Terminal sliding mode control
Uncertainty
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Summary:For the spacecraft formation flying system with unknown external disturbances and model uncertainties, a finite-time attitude coordinated control law is proposed based on consensus theory. Firstly, a disturbance observer is developed to estimate generalized disturbances consisting of external disturbances and model uncertainties, which can guarantee the estimation errors to converge to zero in finite time. Secondly, a novel nonsingular fast terminal sliding mode attitude cooperative controller based on the finite-time disturbance observer is designed to ensure that the attitude errors of the system converge to zero in finite time. Finally, simulation results are come out to demonstrate the effectiveness of the proposed control law.
ISSN:2161-2927
DOI:10.23919/CCC52363.2021.9550186