The paper describes the design of two motor servo-loops for a azimuth stabilization (single axis) of a gondola. This ist the first step in pointing because it is the one action that moves the flight structure and it has the task of contorlling the non linear friction of the suspension bearing in order to isolate the instrumentation from the cruise balloon. The servo-system is capable of 1 arc min of absolute accurcy through two steps: a first one is performed with magnetometer sensor and a second one is led by a rate integrating gyro sensor or a CCD camera. The system proposed makes use of two DC motors. One for any motion of the platform and one strategically placed at the interconnecting point balloon-payload for attenuating the friction bearing. Some mechanical non-linearities, localized at this point, impose a time domain design for any settling time control. The work points out as it is possible to control this settling time of the gondola. A approach of an active Pivot to avoid the disturbance of balloon rotation on the current tracking of the sky azimuthal target is reported. Some results of a simulation program proposed in parametric form are shown. Therefore this program, tested on a flight prototype, can be an effective simple tool for designing pointing systems where a forecast of a accuracy either absolute or as root-mean-square (RMS) is rquested. The program can also tell us the amount of power supply consumption according either to peak or average current for some flight operations.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    A time domain design technique for high precision full digital pointing system in balloon-borne remote infrared sensing


    Weitere Titelangaben:

    Eine Zeitbereich-Regeltechnik für ein digitales Infrarot-Zielerkennungsverfahren für ein ballongetragenes Teleskop


    Beteiligte:
    Boscaleri, A. (Autor:in) / Venturi, V. (Autor:in) / Tronconi, A. (Autor:in) / Colz, R. (Autor:in)


    Erscheinungsdatum :

    1990


    Format / Umfang :

    11 Seiten, 12 Bilder, 7 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Stratospheric Balloon-Borne Telescope Modeling and Precision-Pointing (AAS 13-117)

    Aldrich, J. / Brugarolas, P. / Lanzi, J. et al. | British Library Conference Proceedings | 2013


    Attitude Control and High Precision Pointing Control System of a Large Balloon Borne Solar Telescope

    Ye, X. / Yajima, N. / Ai, G. et al. | British Library Conference Proceedings | 2000


    Control System for a Balloon-Borne Tracking and Pointing Experiment

    Schulthess, M. / Baugh, S. / Schneeberger, T. J. et al. | British Library Conference Proceedings | 1995


    Balloon-borne infrared coronagraph

    Strong, J. | NTRS | 1974