@inproceedings{e23c61500d494d8e82f3c86ab2c11599,
title = "Real-time open-loop control of a 1024-actuator MEMS deformable mirror",
abstract = "This article reports the progress made at the University of Victoria AO Lab, regarding the realtime open-loop control of a 1024-actuator MEMS deformable mirror (DM). The setup is an hybrid woofer-tweeter/open-loop bench. A tip-tilt mirror and a woofer DM (a 57-actuator CILAS DM) are driven in closed-loop while a 1024-actuator MEMS DM is utilized on a parallel open-loop path. Previous work shows that open-loop control providing low residual error (with frozen Kolmogorov turbulence) can be obtained without the need of DM modelling. A preliminary methodical calibration of the DM is employed instead. The MEMS electronics were upgraded to an update rate of 500 Hz and the experiment lays the groundwork for showing how these performances can also be achieved on the bench with dynamic turbulence (created with custom hot air turbulence generators). The current status of the experiment and the next milestones are presented.",
keywords = "Adaptive optics, Calibration process, Deformable mirror, MEMS, Open-loop control, Real-time control",
author = "C{\'e}lia Blain and Rodolphe Conan and Colin Bradley and Olivier Guyon and Darryl Gamroth and Reston Nash",
year = "2010",
doi = "10.1117/12.856589",
language = "English (US)",
isbn = "9780819482266",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
number = "PART 1",
booktitle = "Adaptive Optics Systems II",
edition = "PART 1",
note = "Adaptive Optics Systems II ; Conference date: 27-06-2010 Through 02-07-2010",
}