An electronic phase-lock loop system is described which acts as an FM demodulator to extract the combustion/compression acceleration/deceleration fluctuations in the angular crankshaft velocity from an optical encoder signal. Further processing can provide roughness detection with a second phase-lock loop, and other similarly useful engine control or diagnostic parameters.


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    Titel :

    PLL Sensing for Engine Diagnostics and Control


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    SAE International Congress and Exposition ; 1985



    Erscheinungsdatum :

    1985-02-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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