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Event-Driven Connectivity-Preserving Coordinated Control for Multiple Spacecraft Systems With a Distance-Dependent

Yongxia Shi, Qinglei Hu

    IEEE Transactions on Cybernetics
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    This study presents a new control method for multiple spacecraft, ensuring they stay connected and avoid communication overload. The approach optimizes resource use and prevents Zeno behavior in spacecraft formations.

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    Area of Science:

    • Spacecraft Systems Engineering
    • Control Theory
    • Networked Systems

    Background:

    • Coordinated control of multiple spacecraft faces challenges with limited communication and sensing.
    • Maintaining connectivity is crucial for formation stability and mission success.
    • Existing methods may not efficiently manage communication resources or prevent redundant data transmission.

    Purpose of the Study:

    • To develop a coordinated control strategy for multiple spacecraft that preserves connectivity.
    • To address limitations in communication resources and sensing capabilities.
    • To reduce onboard communication resource occupation and exclude the Zeno phenomenon.

    Main Methods:

    • A distance-dependent dynamic communication network model using a novel bump function.
    • A distributed event-driven coordinated control scheme based on an edge-tension potential function.
    • A hybrid dynamic event-triggered mechanism with a maximum triggering interval for communication scheduling.

    Main Results:

    • The proposed method ensures adjacent spacecraft remain within the allowable connectivity range.
    • Formation consensus is achieved while preserving system connectivity.
    • Onboard communication resource occupation is significantly reduced.
    • The Zeno phenomenon is strictly excluded.

    Conclusions:

    • The developed control scheme effectively addresses the connectivity preservation problem in multi-spacecraft systems.
    • The event-triggered mechanism optimizes communication frequency, enhancing resource efficiency.
    • The method is validated through simulations on a four-spacecraft formation system.