Closed-loop control for tip-tilt compensation on systems under vibration

Mario Castro; Pedro Escárate; Javier Garcés; Sebastián Zúñiga; Diego Rojas; José Marchioni; Andrés Guesalaga

doi:10.1117/12.2232215

27 July 2016 Closed-loop control for tip-tilt compensation on systems under vibration

Mario Castro, Pedro Escárate, Javier Garcés, Sebastián Zúñiga, Diego Rojas, José Marchioni, Andrés Guesalaga

Proceedings Volume 9909, Adaptive Optics Systems V; 99093K (2016) https://doi.org/10.1117/12.2232215
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

Mechanical vibrations affect the performance in modern adaptive optics systems. These structural vibrations induce aberration mainly in tip-tilt modes that reduce the accuracy of the astronomical instrument. Therefore, control actions need to be taken. With this purpose we present a laboratory demonstration of vibration rejection of tip-tilt modes using closed-loop control, inducing vibration on the test bench via an eccentric motor with controllable frequency, in order to simulate the structural vibrations mentioned above. We measure the laser vibration and its tip-tilt aberration using a camera and a Shack Hartmann Wave Front Sensor. The control action is carried out by a Fast Steering Mirror (FSM).

Citation Download Citation

Mario Castro, Pedro Escárate, Javier Garcés, Sebastián Zúñiga, Diego Rojas, José Marchioni, and Andrés Guesalaga "Closed-loop control for tip-tilt compensation on systems under vibration", Proc. SPIE 9909, Adaptive Optics Systems V, 99093K (27 July 2016); https://doi.org/10.1117/12.2232215

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available