A new approach to the control of Automotive Active Suspensions driven by electrohydraulic actuators is presented. Many studies on Active Suspensions focused on implementing a desired force between sprung and unsprung masses. It is shown why the introduction of this controllable force is difficult to achieve. A novel reformulation of the Active Suspension problem, based on prescribing a given displacement between the sprung and unsprung masses, is introduced and the advantages of this approach are discussed. As a result of the reformulation, the Active Suspension problem is transformed from previously examined ‘force-tracking’ problems to a ‘displacement-tracking’ problem. Once the reformulation is accomplished, the ability for a well designed servo-control methodology to achieve the desired tracking goals is increased for the particular hardware configuration considered in this work, subject to fundamental limitations on control-plant structure. Experimental results which demonstrate the benefits of this approach are presented on a 1 degree of freedom (DOF) system.

    This work is partially supported by NSF CMS99-00116. A previous version of this paper was presented at AVEC 2002.


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    Title :

    A practical and effective approach to active suspension control†


    Contributors:
    Zhang, Y. (author) / Alleyne, A. (author)

    Published in:

    Vehicle System Dynamics ; 43 , 5 ; 305-330


    Publication date :

    2005-05-01


    Size :

    26 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown




    A practical and effective approach to active suspension control

    Zhang,Y. / Alleyne,A. / Univ.of Illinois,Chicago,US | Automotive engineering | 2005


    A practical and effective approach to active suspension control

    Zhang, Y. / Alleyne, A. | Tema Archive | 2005



    A practical approach towards advanced semi-active suspension systems

    Decker,H. / Schramm,W. / Kallenbach,R. et al. | Automotive engineering | 1988


    A practical approach towards advanced semi-active suspension systems

    Decker, H. / Schramm, W. / Kallenbach, R. | Tema Archive | 1988