This investigation is based on a complex 4-wheel vehicle model of a passenger car that includes steering system and drive train. The tyre properties are described for all possible combined longitudinal and lateral slip values and for arbitrary friction conditions. The active part is an additional steering system of all 4 wheels, additionally to the driver's steering wheel angle input. Three control levels are used for the driver model that thereby can follow a given trajectory or avoid an obstacle.

    The feedback control of the additional 4 wheel steering is based on an observer which can also have adaptive characteristics. Moreover a virtual vehicle model in a feedforward scheme can provide desired steering characteristics.

    To get information for critical situations a cornering manoeuvre with sudden u-split conditions is simulated. Further a similar manoeuvre is used to evaluate the reentry in a high friction area from low friction conditions. And finally the performance of the controller is shown in a severe lane change manoeuvre.


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    Title :

    Additional 4WS and Driver Interaction


    Contributors:
    LUGNER, P. (author) / PLÖCHL, M. (author)

    Published in:

    Vehicle System Dynamics ; 24 , 8 ; 639-658


    Publication date :

    1995-09-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown



    Additional 4WS and Driver Interaction

    Lugner, P. | Online Contents | 1995


    Additional 4WS and driver interaction

    Lugner,P. / Ploechl,M. / Univ.of Technol.,Inst.of Mechanics,AT | Automotive engineering | 1995


    Additional 4MS and driver interaction

    Lugner, P. / Plöchl, M. | Tema Archive | 1995


    Additional Studies on Driver Information Processing

    J. W. Senders / J. L. Ward | NTIS | 1969