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    An inverse railway wagon model and its applications

    Access Status
    Fulltext not available
    Authors
    Xia, F.
    Cole, C.
    Wolfs, Peter
    Date
    2007
    Type
    Journal Article
    
    Metadata
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    Citation
    Xia, Fujie and Cole, Colin and Wolfs, Peter. 2007. An inverse railway wagon model and its applications. Vehicle System Dynamics. 45 (6): pp. 583-605.
    Source Title
    Vehicle system Dynamics
    DOI
    10.1080/00423110601079151
    ISSN
    00423114
    Faculty
    Department of Electrical and Computer Engineering
    School of Engineering
    Faculty of Science and Engineering
    URI
    http://hdl.handle.net/20.500.11937/22672
    Collection
    • Curtin Research Publications
    Abstract

    An inverse wagon model was developed to estimate wheel-rail contact forces using only measurements of wagon body responses as inputs. The purpose of this work was to provide mathematical modelling to embed in low-cost devices that can be mounted on each freight wagon in a large wagon fleet. To minimize cost, complication, and the maintenance inconvenience of these devices, the constraint is imposed that transducers and connections are limited to locations on the wagon body. Inputs to the inverse model developed include only vertical and lateral translational accelerations and angular accelerations of roll, pitch, and yaw of the wagon body. The model combines the integration and partial modal matrix (PMM) techniques together to form an IPMM method. Besides wheel-rail contact forces some motion quantities such as the lateral and yaw displacements of wheelset are also predicted. Results from the inverse model were compared with data from full scale laboratory suspension tests for vertical suspension excitations. The inverse model was also compared with results from simulations completed in VAMPIRE for more complicated track input profiles. The model results and the applications of the model are discussed.

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