This paper presents a novel design of a control law optimizing the performance of an on-demand all wheel drive (ODAWD) vehicle with hybrid powertrain for traction enhancement via slip regulation in a driving event. Based on a reasonably simplified vehicle model (bicycle model) and optimization of a performance index based on wheel slip, a closed loop actuator control law is derived. The proposed optimal controller tries to minimize the wheel slip error by activating and dynamically controlling the electric motor drive torque to the non-driven wheel pair (e.g. rear wheels), in order to enhance vehicle longitudinal traction. Simulation of the proposed controller was performed on a validated 14 degree-of-freedom detailed vehicle model in SIMULINK. The simulation results show that the proposed control algorithm provides reasonable acceleration slip regulation in a vehicle traction maneuver on low friction coefficient surfaces when compared with that without the traction-enhanced controller presented in this paper.


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    Titel :

    A Traction Enhanced On-Demand All Wheel Drive Control System for a Hybrid Electric Vehicle


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Anwar, Sohel (Autor:in) / Lin, Yifeng (Autor:in)

    Kongress:

    SAE World Congress & Exhibition ; 2007



    Erscheinungsdatum :

    16.04.2007




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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