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Modeling and Control of a Large Deformable Mirror

Bjöörn, Fredrik and Garpinger, Olof (2005) In MSc Theses
Department of Automatic Control
Abstract
The current generation of earth-based telescopes has been of great use to astronomers for the past decades. New fields of astrophysics like the search for and analysis of earth-like planets would however need telescopes with even better resolution. These telescopes are called Extremely Large Telescopes and an ongoing project to develop such a telescope is the Euro50 project. For the Euro50 telescope to achieve enough resolution it will need an adaptive optics system with a large deformable secondary mirror to compensate for atmospheric disturbances. This will make the telescope images sharper. The shape control for such a large mirror requires a dynamic control approach. Since no real mirror was at hand, a modal state space model of the... (More)
The current generation of earth-based telescopes has been of great use to astronomers for the past decades. New fields of astrophysics like the search for and analysis of earth-like planets would however need telescopes with even better resolution. These telescopes are called Extremely Large Telescopes and an ongoing project to develop such a telescope is the Euro50 project. For the Euro50 telescope to achieve enough resolution it will need an adaptive optics system with a large deformable secondary mirror to compensate for atmospheric disturbances. This will make the telescope images sharper. The shape control for such a large mirror requires a dynamic control approach. Since no real mirror was at hand, a modal state space model of the mirror was developed and controlled in the Matlab/Simulink environment. The final MIMO controller uses a combination of state feedback control and compensation filters.\\ \\ This thesis was made in cooperation with Lund Observatory (Lund University), the Department of Automatic Control and the Department of Industrial Electrical Engineering and Automation (Lund Institute of Technology). (Less)
Please use this url to cite or link to this publication:
author
Bjöörn, Fredrik and Garpinger, Olof
supervisor
organization
year
type
H3 - Professional qualifications (4 Years - )
subject
publication/series
MSc Theses
report number
TFRT-5742
ISSN
0280-5316
language
English
id
8847898
date added to LUP
2016-03-18 10:01:42
date last changed
2016-03-18 10:01:42
@misc{8847898,
  abstract     = {{The current generation of earth-based telescopes has been of great use to astronomers for the past decades. New fields of astrophysics like the search for and analysis of earth-like planets would however need telescopes with even better resolution. These telescopes are called Extremely Large Telescopes and an ongoing project to develop such a telescope is the Euro50 project. For the Euro50 telescope to achieve enough resolution it will need an adaptive optics system with a large deformable secondary mirror to compensate for atmospheric disturbances. This will make the telescope images sharper. The shape control for such a large mirror requires a dynamic control approach. Since no real mirror was at hand, a modal state space model of the mirror was developed and controlled in the Matlab/Simulink environment. The final MIMO controller uses a combination of state feedback control and compensation filters.\\ \\ This thesis was made in cooperation with Lund Observatory (Lund University), the Department of Automatic Control and the Department of Industrial Electrical Engineering and Automation (Lund Institute of Technology).}},
  author       = {{Bjöörn, Fredrik and Garpinger, Olof}},
  issn         = {{0280-5316}},
  language     = {{eng}},
  note         = {{Student Paper}},
  series       = {{MSc Theses}},
  title        = {{Modeling and Control of a Large Deformable Mirror}},
  year         = {{2005}},
}