When trying to optimise lateral vehicle dynamics, car manufacturers always have to balance the two competing objectives of safety and agile handling. Safety stands for an easy controllable vehicle even in difficult driving situations. Agile handling qualities are given by a high performance vehicle and lead to driving pleasure. To reach the next step in lateral vehicle evaluation it is essential to reproduce the customer's driving behaviour. Up to now in the automobile industry lateral vehicle dynamics is improved and developed by expert drivers, whose driving behaviour and evaluation are sometimes different from an average driver. Due to this conflict this work develops a new approach in vehicle testing. Two driver models representing an average driver and a experienced driver are tuned and used in combination with a steering robot in a real vehicle to gain objective feedback on a car's lateral dynamics. In contrast to the human driver, who adapts his driving style to a given car and manoeuvre in order to compensate for a car's characteristics at the limit, the driver model's behaviour does not differ. Therefore driving manoeuvres can be repeated reproducibly with a constant driver influence up to the vehicles' limit. Further, the choice of the manoeuvre depends on whether to evaluate safety or handling. Obstacle avoidance manoeuvres are convenient to analyse the lateral road holding ability. In combination with the average driver model it is now possible to reproduce a difficult driving situation under realistic conditions. For investigating the handling performance of a vehicle, circuits with high lateral forces comparable to country roads are a lifelike basis. These tracks are combined with the sportive driver model allowing to analyse the handling of the vehicle. These two approaches are tested in different ways. To analyse safety a steering robot is used which can be mounted in nearly any passenger car. For investigating handling a production car with electronic power steering and electronic pedals named GTI53 was built up. Both setups use a dGPS based inertial measurement unit with a position accuracy of 2 cm. In consequence with this method it is possible to get reproducible measurements with a validated and constant driver influence at the stability limit oriented at the different goals of the customer concerning vehicle safety or driving fun.


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    Titel :

    Customer oriented safety and handling evaluation via adjusted driver model using real vehicle


    Weitere Titelangaben:

    Bewertung der kundenorientierten Sicherheit und der Handhabung über ein angepasstes Fahrermodell mit Hilfe eines realen Fahrzeuges


    Beteiligte:


    Erscheinungsdatum :

    2008


    Format / Umfang :

    8 Seiten, 6 Bilder, 15 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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