This paper develops a pneumatic cab suspension system to improve the low-frequency vibrational comfort on mobile agricultural machines. Assessment of the comfort situation of the operator of a combine harvester shows that the European action and limit values for lowfrequency vibrational comfort are violated for several working conditions of the machine. The frequently used rubber cabin mounts have a deteriorating effect on the comfort of the operator in the low-frequency region. The model is evaluated showing good resemblance with a real setup. A linearized model is incorporated in a full cab model. Predictions of the comfort values differ from the measured comfort values due to end stop impacts in the real setup. Nonetheless Improvements in the objective comfort parameters up to 50 % and higher were observed and therefore the pneumatic cabin suspension proposed here proves to be a valuable asset towards an improvement of the low frequency vibration comfort on agricultural machinery. An alternative cabin mount is designed consisting of pneumatic components. A non-linear parametric model based on first principles is derived and verified experimentally. A linearized model of the cab mount is incorporated in a six degree of freedom linear model of the cab suspension, making it possible to predict the comfort for different working conditions. The predictions are verified by evaluation of a physical cabin suspension system on a hydraulic test rig. In-situ measured vibration signals enable the evaluation of the suspension under controlled lab conditions.


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    Titel :

    Pneumatic cabin suspension for mobile agricultural machines


    Weitere Titelangaben:

    Pneumatische Kabinenaufhängung für landwirtschaftliche Fahrzeuge


    Beteiligte:


    Erscheinungsdatum :

    2010


    Format / Umfang :

    12 Seiten, 5 Bilder, 2 Tabellen, 17 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Pneumatic cabin suspension for agricultural machinery

    Deprez, Koen / Hostens, Ivo / Ramon, Herman | Tema Archiv | 2004



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