In-Orbit Calibration Strategies for Drag-Free Satellites
- Paper number
IAC-06-C1.2.06
- Author
Mr. Michel Silas Guilherme, University of Bremen, Germany
- Coauthor
Dr. Stephan Theil, Center of Applied Space Technology and Microgravity, Germany
- Coauthor
Dr. Waldemar de Castro Leite Filho, CTA-IAE, Brazil
- Year
2006
- Abstract
In the near future a series of Drag-Free Satellites (DFS) will be launched. This class of scientifc satellite missions is basically for research on fundamental physics as well as geodesy. The Drag-Free and Attitude Control System (DFACS) is the more complex technology on-board these satellites, with state of the art actuators and sensors specially developed for this purpose, and not yet tested in space. This key technology allows to reduce the residual accelerations on experiments on board the satellites significantly. In order to achieve this very low disturbance environment (for some missions < 10 −14 m/ s 2) the Drag-Free Control system has to be optimized. This optimization process is required because of uncertainties in system parameters which demand a robustness of the control system. The paper will present an approach for the in-orbit identification of a drag-free control system. The discussion includes the modeling, with scale factors and cross talk couplings, possible excitation signals, comparison of different parameter identification/estimation methods as well as simulation results.
- Abstract document
- Manuscript document
IAC-06-C1.2.06.pdf (🔒 authorized access only).
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