The basic goal of this work was to develop and demonstrate an automatic brake control system that could intervene-only when needed-to help suppress unwanted trailer oscillations (commonly referred to as 'rearward amplification') in large combination vehicles (typically double and triple trailer combinations). The system would only be enabled for highway speed conditions greater than 50 mph. If possible, the systems would be so simple that it could be provided on a trailer-by-trailer basis. That is, the proposed system, when implemented on a particular trailer within a combination vehicle train, would not have to depend upon sensor information from units ahead of it or behind it in order to function properly and yet provide significant benefit. The primary focus therefore of this work was on the development and demonstration of a so-called 'trailer-only' RAMS (Rearward Amplification Suppression) system. To the extent that even more effective (and complex) RAMS systems could also be identified for future vehicle designs that would support such RAMS requirements, they also were included within this study, though as a secondary or back-up system offering to the 'trailer-only' system.


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    Title :

    Rearward Amplification Suppression (RAMS)


    Contributors:
    C. MacAdam (author) / M. Hagan (author) / P. Fancher (author) / C. Winkler (author) / R. Ervin (author)

    Publication date :

    2000


    Size :

    91 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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