Name
Abstract | ||
|---|---|---|
Deformable mirrors (DMs) are electromechanical devices used in ground-based telescopes to compensate for the distortions caused by the atmospheric turbulence, the main factor limiting the resolution of astronomical imaging. Adaptive secondary mirrors (ASMs) represent a new type of DMs; two of them have been recently installed on the 8-m-class large binocular telescope (LBT). ASMs are able to jointly correct rigid and nonrigid wave-front distortions thanks to the use of force actuators distributed on the overall mirror surface. As an offset, each actuator needs to be piloted by a dedicated controller, whose parameters must be accurately tuned to obtain the desired mirror shape. At the present time, the calibration of the controller parameters is executed manually. This paper presents a novel automatic controller tuning procedure that does not rely on the modeling of the mirror dynamics. The experimental validation on a prototype reproducing the three innermost rings of the LBT ASM is reported. |
Year | DOI | Venue |
|---|---|---|
2015 | 10.1109/TCST.2015.2398822 | Control Systems Technology, IEEE Transactions |
Keywords | Field | DocType |
Actuators,Mirrors,Telescopes,Control design,Position control,Adaptive optics | Large Binocular Telescope,Control theory,Control theory,Secondary mirror,Deformable mirror,Control engineering,Self-tuning,Offset (computer science),Physics,Adaptive optics,Actuator | Journal |
Volume | Issue | ISSN |
PP | 99 | 1063-6536 |
Citations | PageRank | References |
0 | 0.34 | 9 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Giorgio Battistelli | 1 | 623 | 46.03 |
| Daniele Mari | 2 | 3 | 1.12 |
| Armando Riccardi | 3 | 8 | 2.52 |
| Pietro Tesi | 4 | 452 | 32.00 |