In this article, a fixed-time filtered adaptive parameter estimation and control scheme is proposed for attitude tracking of quadrotor unmanned aerial vehicles. A nonsingular fixed-time sliding mode surface is constructed to avoid the existence of the singularity issue resulted from the differentiation of the sliding mode variable. Through designing auxiliary filtered matrices, a fixed-time parameter update law is developed to achieve the fixed-time parameter convergence. Then, an adaptive neural controller is designed to ensure the fixed-time convergence of attitude tracking errors in the presence of the model uncertainties. Instead of using any piecewise continuous functions, the possible singularity issue in the conventional fixed-time controller design can be overcome by constructing auxiliary functions, and thus the fixed time stability analysis becomes more concise. The efficiency of the presented scheme is validated through experiments on a practical Quanser quadrotor platform.


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    Titel :

    Fixed-Time Filtered Adaptive Parameter Estimation and Attitude Control for Quadrotor UAVs


    Beteiligte:
    Tao, Meiling (Autor:in) / Chen, Qiang (Autor:in) / He, Xiongxiong (Autor:in) / Xie, Shuzong (Autor:in)


    Erscheinungsdatum :

    01.10.2022


    Format / Umfang :

    4923451 byte




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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