Multi-input multi-output identification for control of adaptive optics systems

Riccardo Muradore; Johann Kolb; Lorenzo Pettazzi; Enrico Marchetti

doi:10.1117/12.2055726

7 August 2014 Multi-input multi-output identification for control of adaptive optics systems

Riccardo Muradore, Johann Kolb, Lorenzo Pettazzi, Enrico Marchetti

Proceedings Volume 9148, Adaptive Optics Systems IV; 91484E (2014) https://doi.org/10.1117/12.2055726
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

In this paper, modern subspace identification methods are applied to a Multi-conjugate Adaptive optics Demonstrator, MAD, developed at ESO. The identified multi-input multi-output systems mapping voltages into slopes can be obtained on data taken in open/closed loop on beacon and in both SCAO and GLAO configurations. The advantages of the proposed approach is twofold: on the one hand the experiment to collect the data takes only few minutes during day time, it can be done on beacon, and all the computational effort is moved off-line. On the other hand, subspace identification provides the mathematical model necessary to design modern model-based controllers (e.g. linear quadratic control).

Citation Download Citation

Riccardo Muradore, Johann Kolb, Lorenzo Pettazzi, and Enrico Marchetti "Multi-input multi-output identification for control of adaptive optics systems", Proc. SPIE 9148, Adaptive Optics Systems IV, 91484E (7 August 2014); https://doi.org/10.1117/12.2055726

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