This paper investigates the problem of nonlinear sliding mode control for flexible air-breathing hypersonic vehicles (FAHVs) with uncertainties. By modeling the flexible effects produced by the rigid-flexible coupling terms as a kind of disturbance and including in the new control-design model with multiple disturbances, a robust coupling observer is proposed to estimate these flexible effects. A novel composite hierarchical controller is also provided, which combines a robust coupling-observer-based compensator and a dynamic-inversion-based sliding mode controller. In addition, the uniformly ultimately boundedness of composite closed-loop system is confirmed by using Lyapunov theory. Simulation results on a full nonlinear model of FAHVs demonstrate that the proposed composite controller is more effective than traditional dynamic-inversion-based sliding mode controller.


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    Title :

    Robust coupling-observer-based sliding mode control for flexible air-breathing hypersonic vehicles


    Contributors:
    Wang, Na (author) / Li, Wen-Shuo (author) / Guo, Lei (author) / Han, Hui-Lian (author)


    Publication date :

    2014-08-01


    Size :

    259650 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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