This paper addresses the problem of determining helicopter rotor mode damping from a state-space model of rotor, fuselage, and inflow in which some of the elements of the system matrices are calculated directly using frequency domain system identification techniques. Simulated flight test data are used to study the fundamental features of a direct state-space matrix identification process including the sensitivity to output noise and the sensitivity to the initial guess of each matrix element to be identified. An improved formulation of the frequency response matching problem is discussed that substantially reduces the computational cost of the solution. The results indicate that the identification procedure is accurate and robust.


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    Title :

    Determination of helicopter rotor damping from simulated data using frequency domain system identification


    Additional title:

    Ermittlung der Hubschrauberrotordämpfung aus Simulationsdaten mit Einsatz der Systemidentifizierung im Frequenzbereich


    Contributors:
    Jones, C.T. (author) / Celi, R. (author)


    Publication date :

    1995


    Size :

    15 Seiten, 16 Bilder, 19 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





    Determination of Helicopter Rotor Damping From Simulated Data Using Frequency Domain System Identification

    Jones, C. / Celi, R. / American Institute of Aeronautics and Astronautics| ASME| ASCE | British Library Conference Proceedings | 1995


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    Zhao, Yongsheng / Wereley, Norman | AIAA | 2001


    Time domain damping identification in helicopter rotor systems

    Zhao, Y. / Wereley, N.M. | Tema Archive | 2001


    AIAA-2001-1536 Time Domain Damping Identification in Helicopter Rotor Systems

    Zhao, Y. / Wereley, N. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2001