A hydraulic system (600) and method for reducing boom dynamics of a boom (30), while providing counter-balance valve protection, includes a hydraulic cylinder (110), first and second counter-balance valves (300, 400), first and second control valves (700, 800), and first and second blocking valves (350, 450). A net load (90) is supported by a first chamber (116, 118) of the hydraulic cylinder, and a second chamber (118, 116) of the hydraulic cylinder may receive fluctuating hydraulic fluid flow from the second control valve to produce a vibratory response (950) that counters environmental vibrations (960) on the boom. The method may include measuring first pressure ripples at the second chamber and reducing a magnitude of second pressure ripples at the first chamber. The pressure ripples may be transformed into a flow command by multiplying the pressure ripples by a gain and/or phase shifting. The gain and/or the phase shifting may be adjusted by feedback. The feedback may include the second pressure ripples at the load holding chamber, a position of the hydraulic actuator, and/or an operator input. A reference signal may be filtered with a moving average filter.


    Access

    Download


    Export, share and cite



    Title :

    Control strategy for reducing boom oscillation


    Contributors:

    Publication date :

    2019-06-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66C Krane , CRANES / E02F Baggern , DREDGING / E04G SCAFFOLDING , Baugerüste / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / F16F SPRINGS , Federn



    CONTROL STRATEGY FOR REDUCING BOOM OSCILLATION

    WANG MENG (RACHEL) / RANNOW MICHAEL BERNE | European Patent Office | 2019

    Free access

    Multi-body Cooperative Control Strategy of Refueling Boom

    Du, Yongliang / Jiang, Feihong | TIBKAT | 2022


    Multi-body Cooperative Control Strategy of Refueling Boom

    Du, Yongliang / Jiang, Feihong | Springer Verlag | 2021


    Oscillation damping of a sprayer boom of an agricultural spraying machine

    KREMMER MARTIN / GRESCH VALENTIN / JUNG BENEDIKT | European Patent Office | 2020

    Free access

    OSCILLATION DAMPING OF A SPRAYER BOOM OF AN AGRICULTURAL SPRAYING MACHINE

    KREMMER MARTIN / GRESCH VALENTIN / JUNG BENEDIKT | European Patent Office | 2018

    Free access