This paper presents a parameter-dependent controller design approach for vehicle active suspensions to deal with changes in vehicle inertial properties and existence of actuator time delays. By denning a parameter-dependent Lyapunov functional, matrix inequality conditions with reduced conservatism are obtained for the design of controllers. Feasible solutions can be obtained by solving a finite number of linear matrix inequalities (LMIs) embedded within a genetic algorithm (GA). Both state feedback and static output feedback controllers can be designed under a unified framework. Based on the measurement or estimation of the vehicle inertial parameters, a parameter-dependent controller could be implemented in practice. The presented approach is applied to a two-degree-of-freedom quarter-car suspension model. Numerical simulations on both bump and random road responses show that the designed parameter-dependent controllers can achieve good active suspension performance regardless of the variation on the sprung mass and the presence of actuator time delay.


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    Title :

    Parameter-dependent input-delayed control of uncertain vehicle suspensions


    Additional title:

    Parameterabhängige, eingangsverzögerte Regelung unsicherer Fahrzeugaufhängungen


    Contributors:
    Du, Haiping (author) / Zhang, Nong (author) / Lam, James (author)

    Published in:

    Journal of Sound and Vibration ; 317 , 3-5 ; 537-556


    Publication date :

    2008


    Size :

    20 Seiten, 10 Bilder, 4 Tabellen, 31 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English