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http://hdl.handle.net/20.500.12386/26569
Titolo: | Self-Tuning Mechanism for the Design of Adaptive Secondary Mirror Position Control | Autori: | Battistelli, Giorgio Mari, Daniele RICCARDI, Armando Tesi, Pietro |
Data pubblicazione: | 2015 | Rivista: | IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY | Numero: | 23 | Fascicolo: | 6 | Da pagina:: | 2087 | 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. | URI: | http://hdl.handle.net/20.500.12386/26569 | URL: | https://ieeexplore.ieee.org/document/7050299 | ISSN: | 1063-6536 | DOI: | 10.1109/TCST.2015.2398822 | Fulltext: | open |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
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2015_battistelli_ieeeTCST_23_2087.pdf | postprint | 2.62 MB | Adobe PDF | Visualizza/apri |
IEEE_Battistelli_07050299.pdf | [Administrators only] | 2.65 MB | Adobe PDF |
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