Pointing stability that defines acceptable displacement of an observation target on the optical detector during the exposure time in a satellite telescope system largely dominates the quality of the image. This research proposes a new control approach to improve pointing stability using a tip-tilt mirror. While conventional control systems for a tip-tilt mirror use feedback error signals obtained from the optical detector, the signal loses enough bandwidth to compensate for high frequency disturbances when pointing at a dark reference guide star. This paper presents a control system subsidiarily using accelerometers to generate high bandwidth feedforward control references to a tip-tilt mirror by properly identifying transfer function between acceleration and pointing displacement. The numerical simulation and experiments using a disturbance source and a tip-tilt mirror verifies feasibility of this method.


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    Titel :

    Accelerometer assisted high bandwidth control of tip-tilt mirror for precision pointing stability


    Beteiligte:
    Ken, Fujiwara (Autor:in) / Susumu, Yasuda (Autor:in) / Nobutaka, Bando (Autor:in) / Shin-ichiro, Sakai (Autor:in) / Atsuo, Tsuiki (Autor:in) / Yoshito, Niwa (Autor:in) / Yoichi, Hatsutori (Autor:in) / Taihei, Yano (Autor:in) / Yoshiyuki, Yamada (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    01.03.2011


    Format / Umfang :

    775213 byte





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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