In vehicles with electric transmission and independent wheel stations, it is possible to have a possibility to control propulsion, steering and suspension individually for each wheel. This makes it possible to improve mobility, performance and driving safety. The long term goal of this work is to develop a methodt hat can evaluate and improve the mobility of such vehicles in terrain. This contribution concerns how a six wheeled electric transmission vehicle should be modelled to enable evaluation of the dynamic behaviour in different type of terrain. This is made by combining modelling of vehicle, transmission and tire-terrain behaviour. For wheeled vehicles an electric transmission with hub motors provides the ability to accurately control the torque on every wheel independently, giving a great ability to improve both mobility in terrain and vehicle behaviour on road. In this work the components of a diesel-electric powertrain for off-road vehicles are modelled and a control layout with the possibility to include functions for improved performance both while driving off- and on-road is proposed. To handle driving on soft ground, a tire/terrain model is needed. The model should include lateral deformation in order to be able to steer. A tire/terrain model is derived based on the ideas of Wong and Reece. The terrain characteristics are chosen to be described by parameters according to the Bekker model, since this data are widely available in literature. The developed tire/terrain model has been implemented together with a vehicle model. This terrain vehicle model is shown to be able to estimate sinkage, rolling resistance, traction force and steering characteristics, of a six wheeledterrain vehicle using electric transmission. To conclude, models of a six-wheeled vehicle with electric transmission and tire models both for soft and rigid ground have been developed. These models form a simulation platform, which makes it possible to evaluate control strategies for the electric transmission with the purpose to ...


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Modelling of six-wheeled electric transmission terrain vehicle


    Beteiligte:
    Noréus, Olof (Autor:in)

    Erscheinungsdatum :

    2007-01-01


    Medientyp :

    Hochschulschrift


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Klassifikation :

    DDC:    629



    Leaning Quad-Wheeled All-Terrain Vehicle

    MELCHER THOMAS W | Europäisches Patentamt | 2019

    Freier Zugriff

    ELECTRIC TWO-WHEELED VEHICLE, ELECTRIC TWO-WHEELED VEHICLE CONTROL DEVICE, AND ELECTRIC TWO-WHEELED VEHICLE CONTROL METHOD

    MEGURO TAKAYUKI / INOGUCHI YUTA / ICHIKAWA HIROKI et al. | Europäisches Patentamt | 2020

    Freier Zugriff


    All-terrain wheeled robot chassis

    SONG HAIFENG / YAN JUNCHUN / HAN BING et al. | Europäisches Patentamt | 2022

    Freier Zugriff

    TWO-WHEELED VEHICLE TIRE FOR RUNNING ON ROUGH TERRAIN

    HINAMI YUKIKO | Europäisches Patentamt | 2024

    Freier Zugriff