In this paper, it is aimed to investigate semi-active suspension systems using magnetorheological (MR) fluid dampers for improving the ride quality od railway vehicles. A 17-degree-of-freedom (DOF) model of a full-scale railway vehicle integrated with the semi-active controlled MR fluid dampers in its secondary suspension system is proposed to cope with the lateral, yaw, and roll motions of the car body, tracks, and wheelsets. The governing equations combining the dynamics of the railway vehicle integrated with MR dampers in the suspension system and the dynamics of the track irregularities are developed and a linear quadratic Gaussian (LQG) control law using the acceleration feedback is adopted, in which the state variables are estimated from the measurable accelerations with a Kalman estimator. In order to evaluate the performances of the semi-active suspension systems based on MR dampers for railway vehicles, the random and periodical irregularities are modelled with a uniform state-space formulation according to the testing data and incorporated into the governing equation of the railway vehicle integrated with the semi-active suspension system. Utilising the governing equations and the semi-active controller developed in this paper, the simulation and analysis are presented in Part II of this paper.


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    Title :

    Semi-active suspension systems for railway vehicles using magnetorheological dampers. Part I: system Integration and modelling


    Additional title:

    Halbaktive Federungssysteme für Eisenbahnfahrzeuge mit magnetorheologischen Dämpfern. Teil I: Systemintegration und Modellbildung


    Contributors:
    Wang, D.H. (author) / Liao, W.H. (author)

    Published in:

    Vehicle System Dynamics ; 47 , 11 ; 1305-1325


    Publication date :

    2009


    Size :

    21 Seiten, 6 Bilder, 1 Tabelle, 54 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English