AbstractA robust entry guidance law based on terminal sliding mode and second-order differentiator is designed for trajectory tracking in this paper. The bank angle is regarded as the control variable. A novel nonlinear compound controller is designed to make the system with the trajectory-tracking error and its rate as states be input-to-state stable (ISS) with respect to uncertainties. The terminal sliding mode controller is designed to the problem of entry guidance by using the second-order differentiator to estimate the total disturbances. The proposed nonlinear compound control law by employing the second-order differentiator and the terminal sliding mode controller, provide robustness, higher control precision. Also, simulation results are presented to illustrate the effectiveness of the control strategy.

    HighlightsDemonstrated improvements in trajectory tracking using a robust entry guidance law.Created guidance law using terminal sliding mode and second-order differentiator.Compound control improves guidance tracking , even with imperfect nonlinear dynamic.Nonlinear compound control demonstrated to reduce guidance tracking error.


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    Title :

    Mars atmospheric entry guidance for reference trajectory tracking based on robust nonlinear compound controller


    Contributors:
    Dai, Juan (author) / Gao, Ai (author) / Xia, Yuanqing (author)

    Published in:

    Acta Astronautica ; 132 ; 221-229


    Publication date :

    2016-12-09


    Size :

    9 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English








    Mars Atmospheric Entry Guidance via Multiple Sliding Surface Guidance for Reference Trajectory Tracking

    Furfaro, R. / Wibben, D. / American Institute of Aeronautics and Astronautics; American Astronautical Society | British Library Conference Proceedings | 2012