A method of health monitoring of a hydraulic actuator includes sensing a first hydraulic fluid pressure at a first chamber of a hydraulic cylinder, the first chamber defined by a piston disposed in the cylinder and a first cylinder wall. The method further includes sensing a second hydraulic fluid pressure at a second chamber of the hydraulic cylinder, the second chamber defined by the piston and a second cylinder wall opposite the first cylinder wall. The pressures are summed to derive a pressure sum leakage estimate. An actual piston position in the hydraulic cylinder is determined and compared to an intended piston position to determine a positional error of the piston. A command-response error leakage estimate is derived from the positional error. The pressure sum leakage estimate and the command-response error leakage estimate are fused to determine an internal hydraulic fluid leakage in the hydraulic cylinder.


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    Titel :

    SYSTEM AND METHOD FOR HEALTH MONITORING OF HYDRAULIC SYSTEMS


    Weitere Titelangaben:

    SYSTEM UND VERFAHREN ZUR GESUNDHEITSÜBERWACHUNG VON HYDRAULISCHEN SYSTEMEN
    SYSTÈME ET PROCÉDÉ DE SURVEILLANCE DE L'ÉTAT DE SYSTÈMES HYDRAULIQUES


    Beteiligte:
    SMITH MATTHEW J (Autor:in) / KLODA JARED (Autor:in) / FRIEL JASON (Autor:in) / HETTLER ERIC (Autor:in)

    Erscheinungsdatum :

    2017-11-22


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / G01F Messen des Volumens, des Durchflussvolumens, des Massendurchflusses oder des Füllstandes , MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL



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