Archivio Istituzionale della RicercaThe paper presents control design and results of a distance stabilization experiment aiming at picometer repeatability. The experiment, called COSI, was funded by European Space Agency in view of space telescopes needing picoradian precision. Stabilization is achieved by actively controlling the optical length of in vacuum Fabry-Perot interferometers. Experiments stabilized three 0.5m distances between two 7kg plates with a repeatability better than 3pm (1 sigma), in presence of severe environment noise and artificial micrometer displacements, thus demonstrating feasibility of COSI concept and technology.
Active distance stabilization of large bodies using Fabry-Pérot interferometry / Canuto, Enrico. - STAMPA. - (2000), pp. 3957-3962. (Intervento presentato al convegno 39th IEEE Conf. on Decision and Control tenutosi a Sydney, NSW nel 12-15 December 2000) [10.1109/CDC.2000.912332].
Active distance stabilization of large bodies using Fabry-Pérot interferometry
CANUTO, Enrico
2000
Abstract
The paper presents control design and results of a distance stabilization experiment aiming at picometer repeatability. The experiment, called COSI, was funded by European Space Agency in view of space telescopes needing picoradian precision. Stabilization is achieved by actively controlling the optical length of in vacuum Fabry-Perot interferometers. Experiments stabilized three 0.5m distances between two 7kg plates with a repeatability better than 3pm (1 sigma), in presence of severe environment noise and artificial micrometer displacements, thus demonstrating feasibility of COSI concept and technology.
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https://hdl.handle.net/11583/1409353
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