A machine has been developed to measure the center-of-gravity (CG) location of a seat. This machine uses a system of pivots, a yaw bearing and two sensors to get the X, Y and Z CG of the seat. Test object mass is measured separately on a scale. A stable pendulum arrangement is used to get the CG location. Governing equations for the machine are shown in the paper and a typical test procedure is discussed. An error analysis is discussed and shows the requisite accuracy of platform angle, geometric dimensions, seat weight and applied weight in order to achieve the desired 3 mm accuracy target. A full system statistical analysis demonstrates that all X and Y CG locations, when compared with theoretical values, are off by less than 1 mm and well within the 3 mm accuracy target. For Z CG, the errors were shown to be 3.3 mm or lower with 95 percent confidence.


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    Title :

    Development of a Passenger Vehicle Seat Center-of-Gravity Measuring Device


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    WCX SAE World Congress Experience ; 2020



    Publication date :

    2020-04-14




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Development of a Passenger Vehicle Seat Center-of-Gravity Measuring Device

    Zagorski, Scott / Andreatta, Dale / Heydinger, Gary | British Library Conference Proceedings | 2020


    Development of a Passenger Vehicle Seat Center-of-Gravity Measuring Device

    Zagorski, Scott / Andreatta, Dale / Heydinger, Gary | British Library Conference Proceedings | 2020


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