This article focuses on the spacecraft attitude control problem with intermittent actuator activation, considering the parameter uncertainty and external disturbance issues simultaneously. To address this problem, we propose a composite event-triggered mechanism (CETM), which consists of two state-dependent triggers governing the activation and deactivation of actuators. Subsequently, by introducing the cascaded decomposition of the backstepping control philosophy, the designed CETM is applied to the decomposed dynamical subsystem, providing a layered intermittent stabilization strategy called the composite event-triggered intermittent control (CETIC). Moreover, the proposed CETIC framework is further extended to address exogenous perturbations by introducing the extended-state observer technique, and a disturbance-observer-based composite event-triggered intermittent controller is then developed. Furthermore, by analyzing the boundedness of the Lyapunov certificate on each interevent time interval, a uniformly strictly decreasing upper bound of the lumped system is then characterized, completing the proof of the system's ultimate boundedness. Finally, numerical simulation results are illustrated to demonstrate the effectiveness of the proposed control scheme.
Composite Event-Triggered Intermittent Attitude Control of Spacecraft
IEEE Transactions on Aerospace and Electronic Systems ; 60 , 2 ; 1612-1627
01.04.2024
3099605 byte
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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