A helicopter flight control system with rotor-state feedback to improve turbulence alleviation in hover is presented. First, a flight dynamic model coupled with turbulence model is developed and validated. Then, an integrated control strategy with a rotor-state feedback control law is proposed based on the baseline control system. The feedback gains of body and rotor states are designed in synergy to improve turbulence alleviation in the interested frequency range of handling qualities. Subsequently, the effects of the rotor-state feedback gains on both the stability of rotor dynamics and helicopter turbulence alleviation are analyzed in detail. Finally, the effectiveness of the integrated control system is evaluated with linear analysis in frequency domain and nonlinear simulation in time domain. The results indicate that with the rotor-state feedback control law integrated into the control system, the helicopter turbulence alleviation in the interested frequency range is improved with less degradation in helicopter stability margins, and the roll and pitch rate responses of helicopter to turbulence, measured with Root-Mean-Square (RMS) values, are reduced by more than 50% and 35% respectively.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Rotor-state feedback control design to improve helicopter turbulence alleviation in hover


    Beteiligte:
    Ji, Honglei (Autor:in) / Chen, Renliang (Autor:in) / Li, Pan (Autor:in)


    Erscheinungsdatum :

    2018-01-01


    Format / Umfang :

    13 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Helicopter Drive Train Load Alleviation in Hover by Nonlinear Control

    Voskuijl, Mark / Van Bruchem, Barend-Jan / Van Liempt, Marcel | British Library Conference Proceedings | 2018


    Vibration Alleviation of a Hingeless Helicopter Rotor Blade by State Feedback

    Belo, E. M. / Marques, F. D. | British Library Online Contents | 1996


    Vibration Alleviation of a Hingeless Helicopter Rotor Blade by State Feedback

    Belo, E. M. / Marques, F. D. / American Institute of Aeronautics and Astronautics et al. | British Library Conference Proceedings | 1996


    Helicopter Rotor Aerodynamic Modeling in Hover: AIAA Standardized Hover Evaluations

    Hariharan, Nathan S. / Egolf, T Alan / Narducci, Robert et al. | AIAA | 2015


    Visualization of a helicopter rotor wake in hover

    Martin, Preston / Bhagwat, Mahendra / Leishman, J. | AIAA | 1999