An investigation of the ability of humans to distinguish differentlevels of gearshift load is described. A test rig with a forward-backward moving gearshift lever was constructed using the typical interior dimensions of European B segment automobiles. The rig used a system of weights and pulleys to provide a load which could be varied in steps of 1 %. Four reference loads were chosen which were considered representative of automotive gearshift operation: 0.5 kg, 1.0 kg, 2.0 kg and 5.0 kg. Twenty subjects took part in the study. Using a variation of the psychophysical method of limits, the subjects were asked to respond whether a test load was heavier or lighter than a reference load. The average value across all reference loads was 0.032. Measurements in the gearshift force made by means of a knob containing a load cell suggested that the variation in the measured WF (Weber fraction) might be attributed to the time behavior of the force exchanged between the human subject and the control surface.


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    Titel :

    Human sensivity to gearshift loads


    Beteiligte:
    Giacomin, J. (Autor:in) / Mackenzie, T.J.P. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2001


    Format / Umfang :

    9 Seiten, 9 Bilder, 2 Tabellen, 16 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




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