Abstract This research explores an integrated control technique for a dual-armed space robot that has captured a tumbling satellite. The compliant behavior for safe manipulation in-orbit is achieved using the external impedance at the target level. First, considering the control moment constraints imposed on the target body, a fast detumbling strategy is proposed using dynamic movement primitives method with normalized time. Following the capturing of a non-cooperative target, a coordinated hierarchical control scheme is developed with multi-arm space robotic dynamics modeling to direct the space robot in carrying out the pre-planned detumbling strategy. The proposed control scheme incorporates external impedance, internal force control and load sharing. Finally, numerical simulation with a sample case of two collaborative seven-degree-of-freedom space robotic arms capturing a tumbling target satellite verifies the viability and efficacy of the presented control strategy.

    Highlights A dynamic movement primitives based detumbling strategy was derived. Distinct load sharing policies were developed for sharing parts of the load among the dual-arm. A coordinated hierarchical control scheme incorporated multiple subtasks was proposed.


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    Titel :

    Coordinated hierarchical control of space robotic safe manipulation with load sharing


    Beteiligte:
    Wang, Mingming (Autor:in) / Li, Wei (Autor:in) / Luo, Jianjun (Autor:in) / Walter, Ulrich (Autor:in)

    Erschienen in:

    Acta Astronautica ; 202 ; 360-372


    Erscheinungsdatum :

    2022-10-14


    Format / Umfang :

    13 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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