This paper presents the design and performance of an ultra-sensitive position sensor dedicated to future space accelerometers. The electromechanical transducer is based on a capacitive scheme and aims at detecting the motion of a proof-mass in an electrostatic accelerometer. A new design called 'area variation capacitance' is investigated to minimize back-action forces exerted on the proof mass. The resolution of that position sensor is a few tenths of picometer in the 0-1 Hz bandwidth. The position is digitized with a sigma-delta converter to feed the control laws of the accelerometer.


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    Titel :

    Capacitive detection scheme for space accelerometers applications


    Beteiligte:
    Josselin, V. (Autor:in) / Touboul, P. (Autor:in) / Kielbasa, R. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1999


    Format / Umfang :

    7 Seiten, 14 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




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