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Titolo:
Measurement of the transfer function of the steering filter of the Virgo super attenuator suspension
Autore:
Ballardin, G; Braccini, S; Bradaschia, C; Casciano, C; Cavalieri, R; Cecchi, R; Chickarmane, V; Dattilo, V; Di Virgilio, A; Ferrante, I; Fidecaro, F; Frasconi, F; Gaddi, A; Gennai, A; Giazotto, A; Holloway, L; Lomtazde, T; Paoletti, F; Pasqualetti, A; Passaquieti, R; Passuello, D; Poggiani, R; Taddei, R; Vicere, A; Zhang, Z; Cuoco, E; Losurdo, G; Ni, WT; Wu, JS; Chang, CH;
Indirizzi:
Ist Nazl Fis Nucl, I-56010 Pisa, Italy Ist Nazl Fis Nucl Pisa Italy I-56010 Nazl Fis Nucl, I-56010 Pisa, Italy Univ Pisa, Pisa, Italy Univ Pisa Pisa ItalyUniv Pisa, Pisa, Italy Ist Nazl Fis Nucl, I-50125 Florence, Italy Ist Nazl Fis Nucl Florence Italy I-50125 s Nucl, I-50125 Florence, Italy Univ Florence, I-50121 Florence, Italy Univ Florence Florence Italy I-50121 v Florence, I-50121 Florence, Italy Natl Tsing Hua Univ, Hsinchu 300, Taiwan Natl Tsing Hua Univ Hsinchu Taiwan 300 ing Hua Univ, Hsinchu 300, Taiwan
Titolo Testata:
REVIEW OF SCIENTIFIC INSTRUMENTS
fascicolo: 9, volume: 72, anno: 2001,
pagine: 3635 - 3642
SICI:
0034-6748(200109)72:9<3635:MOTTFO>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
WAVES DETECTOR VIRGO; MECHANICAL FILTERS; MIRRORS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Ballardin, G Ist Nazl Fis Nucl, Pisa 1291, I-56010 Pisa, Italy Ist Nazl Fis Nucl Pisa 1291 Pisa Italy I-56010 0 Pisa, Italy
Citazione:
G. Ballardin et al., "Measurement of the transfer function of the steering filter of the Virgo super attenuator suspension", REV SCI INS, 72(9), 2001, pp. 3635-3642

Abstract

The optical elements of the Virgo antenna are supported and isolated from seismic noise disturbances by super attenuator (SA) suspensions. The steering filter (SF) is a component of the SA, designed for the mirror control. The dynamical properties of the SF are described by transfer functions, which have been measured in order to define the control strategy; the results have made it possible to set and tune the parameters of a simulation of the SA. The measuring devices were linear voltage differential transducers: they were found to be quite effective and flexible in usage. An auto-regressive model was used to fit the experimental data, implementing the linear relation between the input forces and the resulting motion. The ability of the model to reproduce the experimental behavior was a clear indication of the good data quality, showing that the contaminating noise was under control. The simulation was able to reproduce the qualitative behavior, and the simulation parameters were estimated, with 10% and 20% accuracy. The estimations were later found to be consistent with the measurements taken on a full SA equipped with the same steering filter. Unknown spectral structures were found only above 20 Hz. (C) 2001 American Institute of Physics.

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Documento generato il 09/07/20 alle ore 20:42:44