Based on modelling and experimental validation of the hydropneumatic spring, a non-linear dynamic model is developed for active hydropneumatic suspensions of a special-purpose vehicle. In order to improve the system response to off-road terrain unevenness and vertical impact force, the non-linear system is transformed into a linear one by means of feedback linearization. Furthermore, a sliding mode control strategy is introduced for the purpose of raising the robustness of the system. The simulation results indicate that the present non-linear controller combining the feedback linearization with the linear control algorithm possesses high control accuracy and strong robustness, and the unique requirements for the special-purpose vehicle are therefore fairly well satisfied.


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    Title :

    Feedback linearization and sliding mode control for active hydropneumatic suspension of a special-purpose vehicle


    Additional title:

    Feedback-Linearisierung und gleitende Regelung bei aktiver hydropneumatischer Federung eines Sonderfahrzeugs


    Contributors:
    Shi, J.W. (author) / Li, X.W. (author) / Zhang, J.W. (author)


    Publication date :

    2010


    Size :

    13 Seiten, 14 Bilder, 1 Tabelle, 20 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English







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