AbstractThis paper presents a novel non-certainty-equivalence adaptive control method for the attitude tracking control problem of spacecraft with inertia uncertainties. The proposed immersion and invariance (I&I) based adaptation law provides a more direct and flexible approach to circumvent the limitations of the basic I&I method without employing any filter signal. By virtue of the adaptation high-gain equivalence property derived from the proposed adaptive method, the closed-loop adaptive system with a low adaptation gain could recover the high adaptation gain performance of the filter-based I&I method, and the resulting control torque demands during the initial transient has been significantly reduced. A special feature of this method is that the convergence of the parameter estimation error has been observably improved by utilizing an adaptation gain matrix instead of a single adaptation gain value. Numerical simulations are presented to highlight the various benefits of the proposed method compared with the certainty-equivalence-based control method and filter-based I&I control schemes.

    HighlightsA novel non-CE adaptive control method without employing filter signal is proposed.Control torque demands during the initial transient are significantly reduced.Closed-loop system with low adaption gain could recover high gain performance.Convergence of the estimation error is improved by utilizing adaption gain matrix.


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    Title :

    Fast spacecraft adaptive attitude tracking control through immersion and invariance design


    Contributors:
    Wen, Haowei (author) / Yue, Xiaokui (author) / Li, Peng (author) / Yuan, Jianping (author)

    Published in:

    Acta Astronautica ; 139 ; 77-84


    Publication date :

    2017-06-23


    Size :

    8 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English