This paper considers the fixed-time translational operation control issue for the spacecraft rendezvous task with a free-tumbling target. The translation dynamics model of the rendezvous mission under actuator misalignments is first established in the line-of-sight coordinate frame. Then, a novel time-varying sliding mode surface is constructed and a control scheme with the sliding manifold is proposed to achieve the fixed-time convergence of relative parameters’ tracking errors. It is interesting that the preceding convergence time can be altered explicitly according to the specific rendezvous requirements. Meanwhile, a modified updating strategy is developed to ensure system's fixed-time convergence property in the presence of lumped uncertainties (external disturbance and actuator misalignments). The associated stability proof is constructive and accomplished by the development of a Lyapunov function candidate. Finally, numerical simulations on rendezvous missions are performed to demonstrate the effectiveness and the superiorities of the designed fixed-time control scheme.


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    Title :

    Fixed-Time Maneuver Control of Spacecraft Autonomous Rendezvous With a Free-Tumbling Target


    Contributors:
    Hu, Qinglei (author) / Chen, Wei (author) / Guo, Lei (author)


    Publication date :

    2019-04-01


    Size :

    3734206 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English







    Trajectory Control of Rendezvous with Maneuver Target Spacecraft

    Zhou, Z. / American Institute of Aeronautics and Astronautics; American Astronautical Society | British Library Conference Proceedings | 2012