A semi-active ER seat suspension system was proposed for commercial vehicles and its control performances were investigated by realizing the sliding mode controller (SMC). A 12-dof seat-driver model has been derived and reduced to 6-dof via the balanced model reduction. The SMC with state observer was then designed and experimentally realized to attenuate unwanted vertical vibration to a seated driver. In the experiment, a driver directly sat on the controlled seat, and vertical displacement and frequency-weighted rms accelerations were measured at the seat frame and driver's head, respectively. Then, it has been demonstrated that transmitted vibration levels are substantially reduced by adopting the semi-active ER seat damper. In addition, the ER seat suspension associated with the SMC was shown to reduce SEAT value by more than 10 %, and to reduce VDV ratio by more than 15 %. In the near future, a field test of the proposed ER seat suspension system will be undertaken on road environment as a second phase of this study.


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    Title :

    Vibration control of electrorheological seat suspension with human-body model using sliding mode control


    Additional title:

    Schwingungsregelung bei einer elektrorheologischen Sitzaufhängung mit Körpermodell mittels gleitender Regelung


    Contributors:

    Published in:

    Journal of Sound and Vibration ; 303 , 1/2 ; 391-404


    Publication date :

    2007


    Size :

    14 Seiten, 12 Bilder, 1 Tabelle, 22 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English