Modal-based nonlinear moving horizon estimation (MHE) and model predictive control (MPC) strategies for very flexible aeroelastic systems are presented. They are underpinned by an aeroelastic model built from a one-dimensional intrinsic (based on strains and velocities) description of geometrically nonlinear beams and an unsteady vortex lattice aerodynamic model. Construction of a nonlinear modal-based reduced-order model of the aeroelastic system, employing a state-space realization of the linearized aerodynamics around an arbitrary reference point, allows us to capture the main nonlinear geometrical couplings at a very low computational cost. Embedding this model in both MHE and MPC strategies, which solve the system continuous-time adjoints efficiently to compute sensitivities, lays the foundations for real-time estimation and control of highly flexible aeroelastic systems. Finally, the performance and versatility of the framework operating in the nonlinear regime are demonstrated on two very flexible-wing models, with notably different dynamics, and on two different control setups: a gust-load alleviation problem on a very high-aspect-ratio wing with slower dynamics, which involves substantial deflections; and flutter suppression on a flexible wing with significantly faster dynamics, where an unconventional nonlinear stabilization mechanism is unveiled.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Aeroelastic Control and Estimation with a Minimal Nonlinear Modal Description


    Beteiligte:
    Artola, Marc (Autor:in) / Goizueta, Norberto (Autor:in) / Wynn, Andrew (Autor:in) / Palacios, Rafael (Autor:in)

    Erschienen in:

    AIAA Journal ; 59 , 7 ; 2697-2713


    Erscheinungsdatum :

    01.07.2021




    Medientyp :

    Aufsatz (Konferenz) , Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Modal-Based Nonlinear Estimation and Control for Highly Flexible Aeroelastic Systems

    Artola, Marc / Goizueta, Norberto / Wynn, Andrew et al. | AIAA | 2020


    MODAL-BASED NONLINEAR ESTIMATION AND CONTROL FOR HIGHLY FLEXIBLE AEROELASTIC SYSTEMS

    Artola, Marc / Goizueta, Norberto / Wynn, Andrew et al. | TIBKAT | 2020


    Nonlinear Structural Modal Model for Aeroelastic Applications

    Cavallaro, Rauno / Raveh, Daniella / Kantor, Etay | British Library Conference Proceedings | 2016


    NONLINEAR AEROELASTIC REDUCED ORDER MODELS USING MODAL COORDINATES

    Medeiros, R. R. / Cesnik, C. E. S. / Coetzee, E. B. | British Library Conference Proceedings | 2018