In this paper, a design methodology of an ABS controller for four wheeled road vehicles is presented with a detailed simulation work. In the study, it is intended to follow a flexible approach for integration within unified control structure of an integrated active safety system. A hierarchical control structure was adopted for the controller and the applied strategy was formulized as reference slip tracking. The two low-level controller alternatives (fuzzy logic and PID) successfully tracked the reference slip values determined through vehicle longitudinal acceleration based surface condition estimation for different road conditions. In simulations, for straight-line braking case, a considerable improvement in stopping distances was achieved. In combined braking and steering case, the stability was maintained; on the other hand, an understeer vehicle response was observed due to limited lateral force generation capability as expected. By benefiting from the sensory hardware of the integrated active safety system, a more precise calculation of the wheel slip was attained, which provided the low-level controllers a successful tracking ability of the reference slip signal. Performance of the ABS controlled vehicle was also simulated for noisy vehicle acceleration and angular wheel speed data.


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    Title :

    Design and simulation of an ABS for an integrated active safety system for road vehicles


    Contributors:

    Published in:

    Publication date :

    2010


    Size :

    18 Seiten, 12 Bilder, 1 Tabelle, 21 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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