A proven technology for the shape control of large secondary deformable mirrors employs a magnetically levitated contactless solution and relies on voice-coil actuators co-located to capacitive position sensors. The present work focuses on the description of the latest upgrade of this technology, as applied to the Very Large Telescope Deformable Secondary Mirror, the largest continuous facesheet adaptive mirror ever manufactured. The controller is based on a completely decentralized high frequency feedback coupled to a lower frequency improved feedforward. The system enhancements and performances are verified through electromechanical tests.
|Titolo:||VLT DSM, the Control System of the Largest Deformable Secondary Mirror Ever Manufactured|
|Autori interni:||MANETTI, MAURO|
|Data di pubblicazione:||2014|
|Serie:||PROCEEDINGS OF SPIE, THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING|
|Appare nelle tipologie:||04.1 Contributo in Atti di convegno|