This paper presents the results of a design study involving the application of a combined LQR/dynamic inversion//spl mu/-synthesis control strategy to the descent phase of a reusable launch vehicle (RLV). A nominal desired plant response is formed by deriving a set of linear quadratic regulator gains for a plant model representing an intermediate point along the descent trajectory. A dynamic inversion controller, based on the linearized plant dynamics, is employed to drive the plant response at off-nominal conditions towards the regulated dynamics at the nominal point. The equalization provided by the inner-loop controller makes it possible to use a fixed outer-loop controller, derived using /spl mu/-synthesis, to provide robust performance throughout the descent trajectory. The use of body-axis rotational accelerations as generalized controls within the inner-loop provides a means for blending the reaction control system (RCS) with the aerodynamic control effectors during the low dynamic pressure portion of the descent trajectory. Results of a six-degree-of-freedom, nonlinear simulation demonstrate the effectiveness of the control strategy.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Descent-phase control of a reusable launch vehicle


    Beteiligte:
    Caplin, J. (Autor:in)


    Erscheinungsdatum :

    01.01.2002


    Format / Umfang :

    686607 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Reusable launch vehicle

    Online Contents | 1996


    Reusable launch vehicle

    Online Contents | 1994


    Convex Optimization of Ascent and Powered Descent of a Reusable Launch Vehicle

    Gettatelli, Federico / Benedikter, Boris / Zavoli, Alessandro et al. | TIBKAT | 2023


    Convex Optimization of Ascent and Powered Descent of a Reusable Launch Vehicle

    Gettatelli, Federico / Benedikter, Boris / Zavoli, Alessandro et al. | AIAA | 2023