Improving the vibration isolation performance of the helicopter’s main gearbox strut can reduce the vibration level transmitted to the aircraft body and the level of structural noise radiation. This article proposes a piezoelectric stack periodic strut (PSPS) scheme based on the piezoelectric stack and rubber periodic arrangement. Piezoelectric stack actuators can achieve active vibration and noise control, and the periodic structure of the piezoelectric stack actuators and rubber also has wideband stopband characteristics for reducing vibration and noise. Therefore, PSPS has active and passive hybrid control capabilities, which has advantages in vibration and noise reduction performance, the power of active control, volume and mass, etc. This article presents a full-parameter model that can describe the electromechanical coupling dynamic performance of PSPS. The correctness of the model was verified by the finite element software, and the concept of optimal isolation potential of PSPS was proposed and evaluated. Finally, the hybrid control capability of PSPS for single-frequency and wide-frequency noise was verified through experiments. The results show that compared with the noise level of the cabin using an ordinary strut, PSPS has wideband vibration reduction and noise reduction performance above 500 Hz, with a maximum noise attenuation exceeding 25 dB. When applying active noise control to the PSPS on the helicopter model, a control effect of 12.63–15.56 dB at 900 Hz was achieved.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Hybrid Noise Control in Helicopter Cabin with Piezoelectric Stack Periodic Strut


    Beteiligte:
    Yue, Huiyu (Autor:in) / Xue, Hongtao (Autor:in) / Yang, Dongpo (Autor:in) / Wang, Fengjiao (Autor:in) / Lu, Yang (Autor:in)

    Erschienen in:

    AIAA Journal ; 63 , 5 ; 1978-1992


    Erscheinungsdatum :

    01.05.2025




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





    Helicopter Cabin Noise Reduction Based on Compounded Periodic Struts

    Wang, Fengjiao / Lu, Yang / Li, Jianbo | British Library Conference Proceedings | 2018


    Adaptive control of helicopter cabin noise

    Jolly, M.R. / Norris, M.A. / Rossetti, D.J. | Tema Archiv | 1995



    A practical helicopter cabin noise simulator

    Chillery, J.A. / Collister, J.B. | Tema Archiv | 1986