Abstract This paper focuses on geostationary satellites with an electric propulsion system and develops two efficient station-keeping strategies in full and failure modes. High-precision mean orbital elements are calculated by an estimator and used as the inputs of two control strategies. In the full mode, an optimization-based maneuver planner, which requires the computations of future orbits, is proposed to achieve long-term minimum-fuel station-keeping. In the failure mode, a fault detection algorithm is designed to diagnose the thruster failure and compute the orbital deviation caused by faulted thruster. Subsequently, a real-time control law as well as a threshold function is formulated to produce the on-off commands of electric thrusters, which correct the orbital deviation. Finally, numerical simulations are made to validate the accuracy and efficiency of two strategies.

    Highlights High-precision mean orbital element estimation method is stated. The fuel optimal station-keeping strategy in full mode is studied. The fault detection algorithm to diagnose the thruster failure is designed. The real-time station-keeping strategy in failure mode is developed.


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    Title :

    Geostationary station-keeping with electric propulsion in full and failure modes


    Contributors:
    Li, Lincheng (author) / Zhang, Jingrui (author) / Li, Yanyan (author) / Zhao, Shuge (author)

    Published in:

    Acta Astronautica ; 163 ; 130-144


    Publication date :

    2019-03-08


    Size :

    15 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English






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