This master thesis was performed together with the Vehicle Dynamics department at Volvo Cars, Torslanda. Volvo Cars is a global producer of passenger cars. With increasing demand of safety, vehicle stability and efficiency, coupled to customer demands of agility and driving pleasure from passenger cars, there is a need of active systems to both enhance the vehicle dynamics while preserving or increase the efficiency of the vehicle. Therefore, it is of necessity to evaluate possible alternatives to existing systems in order to fulfil these demands. The scope of this Master Thesis was to evaluate the control algorithm “G-vectoring”, used to control yaw response in transient manoeuvres by controlling the longitudinal acceleration and thereby the load transfer. Further, the control algorithm was to be used with the ICE-driveline as actuator to obtain the longitudinal acceleration. The controller was to be evaluated in terms of handling, comfort, applicability and efficiency. The project consisted of two phases: first, a full factorial parameter study was performed using six vehicle specific factors and 1 environmental factor, friction coefficient, to evaluate the general effects of the driveline controller. Further, to understand on which vehicle the controller would be most applicable on in terms of handling and comfort, and how it affected the general efficiency of the vehicles. The full factorial test was done using simulations, using a one-track model extended with a simple load transfer model, and magic-formula tyres. The driveline used was a Volvo T5 FWD petrol driveline with 6 speed automatic Gearbox. The full factorial experiment was done using three manoeuvres, step steer, sine with dwell, and closed loop driving. The second phase was to answer how the controller affected the handling and comfort of the vehicle using subjective and objective assessment. In this stage, the controller was implemented to be used by real drivers in Volvo Cars driving simulator, using VI-CarRealTime as simulation tool. The ...


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    Titel :

    Lateral vehicle dynamics control by integrated longitudinal load control


    Beteiligte:

    Erscheinungsdatum :

    2017-01-01


    Medientyp :

    Hochschulschrift


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Klassifikation :

    DDC:    629



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