An overview of analog and digital torsional vibration measurement methods is presented. Significant sources of digital measurement error are discussed in detail. Methods to minimize measurement errors are explored. A method to use multi-bit A/D data acquisition of a magnetic pickup signal to accurately measure tooth passing frequency with low sample rates is proposed. A frequency domain correction window is proposed which improves the frequency response of the standard digital demodulation technique. The proposed improvements enable accurate torsional vibration measurement with inexpensive A/D data acquisition equipment.


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    Title :

    Improved Methods for Digital Measurement of Torsional Vibration


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    1996 SAE International Truck and Bus Meeting and Exposition ; 1996



    Publication date :

    1996-10-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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