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Proceedings Paper

The control switching adapter: a practical way to ensure bumpless switching between controllers while AO loop is engaged
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Paper Abstract

Linear Quadratic Gaussian (LQG) control has gained significant ground in astronomical AO. On-line re-tuning of LQG while keeping the AO loop engaged is crucial to match changes in disturbance conditions. However, switching between AO controllers generates control "bumps" which may compromise stability and performance. Control bumps can be eliminated by adjusting the new controllers internal space to ensure maximum continuity of the control trajectory. In this work, we show how to implement this procedure in the case of a tip and tilt control loop using an additional piece of RTC software, the "control switching adapter".

Paper Details

Date Published: 27 July 2016
PDF: 7 pages
Proc. SPIE 9909, Adaptive Optics Systems V, 99094K (27 July 2016); doi: 10.1117/12.2234266
Show Author Affiliations
Henri-François Raynaud, Lab. Charles Fabry, Institut d'Optique Graduate School (France)
Caroline Kulcsár, Lab. Charles Fabry, Institut d'Optique Graduate School (France)
Rémy Juvénal, Lab. Charles Fabry, Institut d'Optique Graduate School (France)
ONERA (France)
Cyril Petit, ONERA (France)


Published in SPIE Proceedings Vol. 9909:
Adaptive Optics Systems V
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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