This study focuses on the online thrust-loss state identification and trajectory optimization problem during the asteroid probe powered descent process where thrust-loss fault occurs. First, according to the probe's thruster configuration structure, a powered descent dynamic model of the probe and a trajectory optimization model with thrust-loss constraints are established. In addition, this article proposes an online thrust-loss identification model based on the moving horizon estimation method. By combining the results of online thrust-loss identification, the trajectory replanning problem considering thrust-loss constraints is researched on the Bezier shape-based method, which can quickly generate feasible and relatively optimal trajectories. Finally, numerical simulations and analyses are performed to verify the effectiveness of the thrust-loss identification model and the probe powered descent trajectory replanning strategy proposed in this article. The proposed methods can ensure the soft-landing of the probe on a predetermined target, even if a thrust-loss fault occurs during the probe powered descent process.


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    Titel :

    Asteroid Descent Trajectory Optimization With Online Thrust-Loss Identification


    Beteiligte:
    Feng, Wenyu (Autor:in) / Fan, Zichen (Autor:in) / Qi, Ji (Autor:in) / Huo, Mingying (Autor:in) / Qi, Naiming (Autor:in)


    Erscheinungsdatum :

    01.04.2025


    Format / Umfang :

    1720048 byte




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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