To provide astronomers access to infrared wavelength unavailable from the ground the airborne telescope SOFIA (Stratospheric Observatory for Infrared Astronomy) is in development. This paper focuses on the image stability of the telescope, its modeling and simulation. The operation of the telescope under the harsh environmental conditions in the aircraft makes the prediction of the image stability during the design process necessary. For this purpose an integrated mathematical simulation model which includes the optics, the structural dynamics and the control loops has been constructed. The structure of the model and the import and reduction of the finite element model of the telescopes mechanical sructure, which is the major step in establishing an realistic integrated model, is presented. Furthermore the design of the position controller, which is important for reaching the desired image stability, is shown.
Modelling, simulation and controller design for the SOFIA airborne telescope with regard to the image stability
1999
6 Seiten, 9 Bilder, 9 Quellen
Aufsatz (Konferenz)
Englisch
NTRS | 2012
|NTRS | 2012
|NTIS | 2012
|NTIS | 2012
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