This paper describes research into the control of vehicles fitted with Electronic Stability Control System (ESC) and Active Roll Control (ARC). Both single-channel and dual-channel ARC are combined with ESC and the handling performance of the vehicle with these systems is investigated using CarSim simulation environment. The capability of a single-channel ARC provided by a supplier as a black box for roll compensation, and a dual-channel ARC, developed in this paper that combines a feed-forward and feedback control are investigated. The feed-forward control controls the vehicle roll motion, and the feedback control modifies the front and rear roll stiffness from the feed-forward setting to influence the vehicle understeer behaviour. First, we study the effect of the single channel ARC on the steady state and transient characteristics of the vehicle by modifying the roll characteristics of the car. Second, we investigate the possibility of influencing the vehicle handling using dual channel ARC to vary the roll moment distribution to reduce vehicle oversteer and improving yaw velocity tracking by actively controlling the front-to-rear roll stiffness distribution. Finally, we present simulations to demonstrate the handling performance of the integrated ESC and both single-channel and dual-channel ARC. Based on the simulation study using CarSim we conclude that: (1) The single channel ARC focuses on reducing body roll, where as dual channel ARC enhances directional stability and handling performance. (2) In steady state, the effect of the roll control is more pronounced than the roll moment distribution control. In this case the single and the dual channel ARC behave very similarly. (3) The simulations demonstrated the possibility of reducing understeer tendency of the vehicle and improving yaw velocity tracking by actively reducing the front-to-rear roll stiffness distribution. (4) During transient manoeuvres, more emphasis is placed on vehicle handling. In this case, the dual channel ARC improves the overall vehicle stability and requires less ESC activation. Whereas the single-channel ARC reduces the roll angle and does not affect the ESC activation significantly. (5) The diminishing-integrator side-slip control in the feedback of the dual-channel ARC reduces the side slip angle during transient manoeuvres and enhances the overall stability and tracking of the vehicle.


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    Titel :

    Active roll control and integration with electronic stability control system: Simulation study


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    2011


    Format / Umfang :

    24 Seiten, 33 Bilder, 2 Tabellen, 16 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch






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