This article reports on an initial investigation of a hybrid fluid-borne noise control system in hydraulic pipelines. The hybrid system is built by integrating an active feedforward noise controller with passive tuned flexible hoses. The active attenuator is designed to cancel the dominant harmonic pressure pulsations in the fluid line, while the passive hose is tuned to attenuate the residual high frequency pulsations. The active attenuator can effectively decrease the fluid-borne noise by superimposing a secondary anti-phase control signal. Adaptive notch filters with the filtered-X least mean square algorithm were applied for the controller and a frequency-domain least mean square filter was used for the secondary path on-line identification. The transmission line model was used to model the pipeline, and a time-domain hose model which includes coupling of longitudinal wall and fluid waves was used to model the flexible hose. Simulation results show that very good noise cancellation was achieved using the proposed approach, which has several advantages over existing fluid-borne noise control systems, being effective for a wide range of frequencies without impairing the system dynamic response much. While the flexible hoses may be less effective than purpose-built passive silencers, they can form an inexpensive and practical solution in combination with active control.


    Access

    Download


    Export, share and cite



    Title :

    Hybrid fluid-borne noise control in fluid-filled pipelines


    Contributors:
    Pan, M. (author) / Johnston, N. (author) / Plummer, A. (author)

    Publication date :

    2016-10-03


    Remarks:

    Pan , M , Johnston , N & Plummer , A 2016 , ' Hybrid fluid-borne noise control in fluid-filled pipelines ' , Journal of Physics: Conference Series , vol. 744 , no. 1 , 012016 . https://doi.org/10.1088/1742-6596/744/1/012016



    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    DDC:    629




    Novel, compact devices for reducing fluid-borne noise

    Earnhart,N. / Marek,K. / Cunefare,K. et al. | Automotive engineering | 2011


    Novel, Compact Devices for Reducing Fluid-Borne Noise

    Cunefare, Kenneth / Marek, Kenneth / Earnhart, Nicholas | SAE Technical Papers | 2011


    Air-borne Noise of Hydraulic Systems caused by Fluid-borne Pressure Ripple

    Kojima, E. | British Library Online Contents | 1997


    Control system for fluid borne vehicles

    KEN WAHREN / OLIVER HAANEN | European Patent Office | 2019

    Free access