Control of an antilock brake system for aircraft and land vehicles is based upon estimates of the torque applied to braking wheels by means of a sliding mode observer. The observer yields a highly accurate estimate of torque that is robust for the entire operating range of the brakes, and provides an input to a relatively simple control system that regulates applied torque from either an electro-hydraulic or electromechanical actuator. Excellent braking performance for a regional jet transport is demonstrated in this paper via hardware-in-the-loop simulation. In conclusion, it has been shown via simulation (including hardware-in-the-loop simulation) that an ABS based upon a sliding mode observer estimate of differential torque combined with a suitable limit cycle controller is technically feasible. The system requires only a measurement of braked wheel angular speed and requires no a priori knowledge of friction characteristics of the tire and runway/road. A simple compensating controller operating with a measurement of wheel fore-aft acceleration effectively suppresses gear walk yielding a highly effective ABS for aircraft. A similarly effective ABS for land vehicles is potentially available using the concept of the present method.


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    Titel :

    A sliding mode observer based ABS for aircraft and land vehicles


    Weitere Titelangaben:

    Antiblockiersystem für Luft- und Landfahrzeuge auf der Basis eines Gleitbeobachters


    Beteiligte:
    Ribbens, W.B. (Autor:in) / Fredricks, R. (Autor:in)


    Erscheinungsdatum :

    2003


    Format / Umfang :

    8 Seiten, 13 Bilder, 5 Quellen




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    A sliding mode observer based ABS for aircraft and land vehicles

    Ribbens,W.B. / Fredricks,R. / Univ.of Michigan,US | Kraftfahrwesen | 2003


    A Sliding Mode Observer Based ABS for Aircraft and Land Vehicles

    Fredricks, Ron / Ribbens, William B. | SAE Technical Papers | 2003


    2003-01-0252 A Sliding Mode Observer Based ABS for Aircraft and Land Vehicles

    Ribbens, W. B. / Fredricks, R. / Society of Automotive Engineers | British Library Conference Proceedings | 2003


    Robust Sliding Mode Observer for Automatic Steering of Vehicles

    Zhang, J. R. / Xu, S. J. / Rachid, A. et al. | British Library Conference Proceedings | 2000


    Robust sliding mode observer for automatic steering of vehicles

    Zhang, J.R. / Xu, S.J. / Rachid, A. | IEEE | 2000