Integrated Modeling of a Laboratory Setup for a Large Deformable Mirror

Rikard Heimsten, Torben Andersen, Mette Owner-Petersen, Douglas G. MacMynowski

    Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

    Abstract

    We study a concept for a low-cost, large deformable mirror for an Extremely Large Telescope. The use of inexpensive voice-coil actuators leads to a poorly damped faceplate, with many modes within the desired control bandwidth. A control architecture, including rate and position feedback to add damping and stiffness, for the faceplate has been presented in our previous papers. An innovative local control scheme which decouples adjacent actuators and suppresses low-order eigenmodes is a key feature in our controller. Here, we present an integrated model of a partially illuminated large deformable mirror in an experimental laboratory setup with a limited amount of actuators. From the model, conclusions are drawn regarding the number of actuators needed to identify the key features, such as local control performance, dynamic range, and controllability and robustness of the deformable mirror.
    Original languageEnglish
    Title of host publicationIntegrated Modeling of Complex Optomechanical Systems
    PublisherSPIE
    Pages83360N
    Volume8336
    DOIs
    Publication statusPublished - 2011
    EventConference on Integrated Modeling of Complex Optomechanical Systems - Kiruna, Sweden
    Duration: 2011 Aug 152011 Aug 17

    Publication series

    Name
    Volume8336
    ISSN (Print)0277-786X
    ISSN (Electronic)1996-756X

    Conference

    ConferenceConference on Integrated Modeling of Complex Optomechanical Systems
    Country/TerritorySweden
    CityKiruna
    Period2011/08/152011/08/17

    Subject classification (UKÄ)

    • Astronomy, Astrophysics and Cosmology

    Free keywords

    • local control
    • active damping
    • deformable mirror
    • distributed control
    • Adaptive optics

    Fingerprint

    Dive into the research topics of 'Integrated Modeling of a Laboratory Setup for a Large Deformable Mirror'. Together they form a unique fingerprint.

    Cite this