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    This study presents a resilient neuroadaptive control scheme for spacecraft attitude coordination, effectively managing faults and uncertainties. The developed method ensures fixed-time stability with reduced computational cost and information requirements.

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    Area of Science:

    • Aerospace Engineering
    • Control Systems Engineering
    • Robotics

    Background:

    • Spacecraft attitude coordination is crucial for multi-spacecraft missions.
    • Unintended faults, uncertainties, and disturbances pose significant challenges to robust control.

    Purpose of the Study:

    • To develop a resilient neuroadaptive distributed fixed-time control scheme for spacecraft attitude tracking.
    • To address communication link faults, actuator faults, inertial uncertainties, and external disturbances.

    Main Methods:

    • An improved adaptive distributed observer was designed to estimate leader states resiliently against communication link faults.
    • A neuroadaptive distributed fixed-time attitude coordination controller was developed using a power integrator technique.
    • Fixed-time stability analysis was performed for the closed-loop system.

    Main Results:

    • The proposed observer enhances resilience against communication link faults.
    • The controller demonstrates effectiveness in handling actuator faults, uncertainties, and disturbances.
    • The developed control scheme requires less information and has a lower computational cost compared to existing methods.

    Conclusions:

    • The resilient neuroadaptive distributed fixed-time control scheme ensures system stability and effective attitude coordination.
    • The method offers a practical solution for robust spacecraft formation control under adverse conditions.