Highlights The effects of the Earth’s magnetic field on the EMFF satellites are analyzed. The translational dynamics is derived by utilizing the analytical mechanics theory. A robust suboptimal controller is proposed with robust stability and optimality. The proposed controller has a simpler structure and smaller computation burden. The amplitude of the control input dipole is reasonable and achievable.

    Abstract As a novel approach to control the relative motion of a satellite formation, electromagnetic formation flight (EMFF) has some prominent advantages, such as no propellant consumption and no plume contamination, and has a broad prospect of application in such fields as on-orbit detection and optical interferometry. The current paper investigates the optimal control for the reconfiguration of a two-satellite electromagnetic formation using the nonlinear quadratic optimal control technique. Specifically, the effects of the Earth’s magnetic field on the EMFF satellites are analyzed, and then the nonlinear translational dynamic model of a two-satellite electromagnetic formation is derived by utilizing the analytical mechanics theory. Considering the high nonlinearity and coupling in the dynamic model and the actuator saturation, a closed-loop robust suboptimal control strategy based on the indirect robust control scheme and the θ - D technique is proposed with robust stability and optimality. To ensure a further reduction of control input, the designed suboptimal controller is modified by applying the Tracking-Differentiator. The feasibility of the derived translational dynamics and proposed control strategy for the robust reconfiguration mission is validated through theoretical analysis and numerical simulations.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Indirect robust suboptimal control of two-satellite electromagnetic formation reconfiguration with geomagnetic effect


    Beteiligte:
    Qi, Da-wei (Autor:in) / Yang, Le-ping (Autor:in) / Zhang, Yuan-wen (Autor:in) / Cai, Wei-wei (Autor:in)

    Erschienen in:

    Advances in Space Research ; 64 , 11 ; 2331-2344


    Erscheinungsdatum :

    2019-08-08


    Format / Umfang :

    14 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch