After a short overview of the CHAMP satellite and its AOCS a new approach for safe mode attitude control, using simply a 2-axis sun sensor data and magnetic coils for control torque generation, is presented. The derived measurement and control algorithms are very simple and insensitive to variations of the spin rate. The performance of the controller has been demonstrated by simulations. Once the satellite is spinning with spin axis orientation towards the sun, the benefits of the proposed concept are: - stability of the spin axis orientation, i.e. maintenance of sun orientation during eclipse without any additional sensor - no fuel consumption in safe mode, - full autonomy. The measurement algorithms allow simple high accuracy estimation of sun sensor misalignment angles in two axes. Therefore the algorithms are also well suited for spinning satellites with the requirement for accurate spin axis orientation towards the sun.


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    Title :

    A new approach for CHAMP safe mode attitude control


    Contributors:
    Bauer, H. (author) / Schmitt, C. (author)


    Publication date :

    1997


    Size :

    6 Seiten, 11 Bilder, 3 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    A New Approach for CHAMP Safe Mode Attitude Control

    Bauer, H. / Schmitt, C. | British Library Online Contents | 1997


    CHAMP attitude and orbit control system

    Schmitt, C. / Bauer, H. / International Academy of Astronautics | British Library Conference Proceedings | 2000


    CHAMP Attitude Dynamics (AAS 01-178)

    Feucht, U. / Schneller, M. / AAS et al. | British Library Conference Proceedings | 2001


    CHAMP Attitude Dynamics (AAS 01-178)

    Feucht, U. / Schneller, M. / American Astronautical Society | British Library Conference Proceedings | 2001