A state observer for the Virgo inverted pendulum

作者：Accadia T; Acernese F; Astone P; Ballardin G; Barone F; Barsuglia M; Basti A; Bauer Th S; Bebronne M; Beker M G; Belletoile A; Bitossi M; Bizouard M A; Blom M; Bondu F; Bonelli L; Bonnand R; Boschi V^*; Bosi L; Bouhou B; Braccini S; Bradaschia C; Branchesi M; Briant T; Brillet A; Brisson V; Bulik T; Bulten H J; Buskulic D; Buy C; Cagnoli G; Calloni E; Canuel B; Carbognani F; Cavalier F; Cavalieri R; Cella G

来源：Review of Scientific Instruments, 2011, 82(9): 094502.

DOI：10.1063/1.3637466

• gravitational wave detectors
• interferometers
• Kalman filters
• nonlinear systems
• pendulums

We report an application of Kalman filtering to the inverted pendulum (IP) of the Virgo gravitational wave interferometer. Using subspace method system identification techniques, we calculated a linear mechanical model of Virgo IP from experimental transfer functions. We then developed a Kalman filter, based on the obtained state space representation, that estimates from open loop time domain data, the state variables of the system. This allows the observation (and eventually control) of every resonance mode of the IP mechanical structure independently.

• 出版日期2011-9
• 单位中国地震局