Multiple mirror control system

Peter John Hampton; Colin Bradley; Aaron Hilton; Pan Agathoklis

doi:10.1117/12.551950

25 October 2004 Multiple mirror control system

Peter John Hampton, Colin Bradley, Aaron Hilton, Pan Agathoklis

Proceedings Volume 5490, Advancements in Adaptive Optics; (2004) https://doi.org/10.1117/12.551950
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

This paper describes the current control system of the multi-conjugate adaptive optics (MCAO) test bench system that is being developed at the University of Victoria, BC, Canada. The design and analysis of a control system for an AO system employing a Micro-Electro-Mechanical-System (MEMS) based deformable mirror and a PI tilt mirror is presented. This paper focuses on modal control of one deformable mirror and a tilt mirror with a Shack-Hartmann wave front sensor. Diagrams of how all the components work together as a control system are given. Bandwidth measurements for a single delay integrator controller and for a matched delay integrator are presented. Analysis shows that matching the delays of the integrator to the delays of the optical feedback loop provides considerable improvement in bandwidth.

Citation Download Citation

Peter John Hampton, Colin Bradley, Aaron Hilton, and Pan Agathoklis "Multiple mirror control system", Proc. SPIE 5490, Advancements in Adaptive Optics, (25 October 2004); https://doi.org/10.1117/12.551950

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