Nonlinear disturbance observer-based robust control of attitude tracking of rigid spacecraft

Robust control of attitude tracking system between two rigid spacecraft is addressed using nonlinear disturbance observer-based control technique. A relative attitude dynamics model is derived for spacecraft tracking maneuver, where parameter uncertainty and environmental disturbances are considered...

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Bibliographic Details
Published in:Nonlinear dynamics 2017-04, Vol.88 (2), p.1317-1328
Main Author: Lee, Daero
Format: Article
Language:English
Subjects:
Asymptotic methods
Asymptotic properties
Attenuation
Automotive Engineering
Classical Mechanics
Computer simulation
Control
Control stability
Disturbance observers
Dynamical Systems
Engineering
Inertia
Mechanical Engineering
Nonlinear analysis
Nonlinear control
Original Paper
Parameter estimation
Parameter uncertainty
Robust control
Spacecraft attitude control
Spacecraft tracking
Stability analysis
Tracking control
Tracking systems
Vibration
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Summary:Robust control of attitude tracking system between two rigid spacecraft is addressed using nonlinear disturbance observer-based control technique. A relative attitude dynamics model is derived for spacecraft tracking maneuver, where parameter uncertainty and environmental disturbances are considered as disturbance torques. A composite control technique is proposed for robust attitude tracking of a rigid spacecraft about a spacecraft under multiple disturbances by combining a nonlinear disturbance observer with an asymptotic tracking control. The proposed nonlinear disturbance observer is used to enhance the disturbance attenuation ability and robustness performance against uncertain inertia parameter and disturbances by estimating and compensating for the disturbances through feedforward. Stability and tracking performance of the nonlinear disturbance observer are analyzed. Furthermore, the stability of the composed control approach consisting of the asymptotic tracking control and nonlinear disturbance observer is established through Lyapunov method. Simulation results show that the composite control technique can significantly enhance disturbance attenuation ability, robust dynamics performance and the desired relative attitude tracking accuracy of a rigid spacecraft under external disturbances and uncertain inertia matrix.
ISSN:0924-090X
1573-269X
DOI:10.1007/s11071-016-3312-1