A state observer for the Virgo inverted pendulum.

  title={A state observer for the Virgo inverted pendulum.},
  author={T. Accadia and Fausto Acernese and Pia Astone and G. Ballardin and Fabrizio Barone and Matteo Barsuglia and Alessio Basti and Th. S. Bauer and Michael V. Bebronne and M. G. Beker and Arnaud Bell{\'e}toile and M. Bitossi and M. A. Bizouard and Mikael Blom and François Bondu and L. Bonelli and R. Bonnand and Valerio Boschi and L. Bosi and Boutayeb Bouhou and S. Braccini and C. Bradaschia and Marica Branchesi and Tristan Briant and A. Brillet and V. Brisson and T. Bulik and H. J. Bulten and D. Buskulic and Christelle Buy and Gianpietro Cagnoli and E. Calloni and Benjamin Canuel and Franco Carbognani and F. Cavalier and Renzo Cavalieri and G. Cella and Elisabetta Cesarini and O. Chaibi and Eric Chassande-Mottin and Andrea Chincarini and A. Chiummo and F. Cleva and Eugenio Coccia and P-F Cohadon and Carlo Nicola Colacino and Joaquim Col{\`a}s and Alberto Colla and Marco Colombini and Angela Conte and A Corsi and J P Coulon and Elena Cuoco and S D' Antonio and V. Dattilo and M. Davier and Richard. Day and Rosario De Rosa and G. Debreczeni and Walter Del Pozzo and Michele Del Prete and Luciano Di Fiore and Alberto di Lieto and M. Di Paolo Emilio and Angela Di Virgilio and Andreas Dietz and Michele Drago and G. Endrőczi and Viviana Fafone and I. Ferrante and F. Fidecaro and I. Fiori and R. Raphaele Flaminio and Luca Antonio Forte and J D Fournier and Janyce Franc and S. Frasca and F. Frasconi and Massimo Galimberti and Luca Gammaitoni and F. Garufi and Marcelli Eliot{\'e}rio Gaspar and Gianluca Gemme and Eric Genin and A. Gennai and A. Giazotto and R. Gouaty and Massimo Granata and Caroline Greverie and Gianluca M Guidi and J-F Hayau and Antoine Heidmann and H. Heitmann and P. Hello and Piotr Jaranowski and Izabela Kowalska and Andrzej Kr{\'o}lak and Nicolas Leroy and Nicolas Letendre and Tjonnie G. F. Li and Nicoletta Liguori and Matteo Lorenzini and Vincent Loriette and Giovanni Losurdo and E. Majorana and I. Maksimovic and Nary Man and M. L. Mantovani and Fabio Marchesoni and F. Marion and J. Marque and Fabrizio Martelli and A. Masserot and Clotaire Michel and Leopoldo Milano and Yury V Minenkov and Midhun Mohan and N. Morgado and Augusto Morgia and B. Mours and L. Naticchioni and Francesco Nocera and Giulia Pagliaroli and Libero Palladino and C. Palomba and F. Paoletti and Matteo Parisi and A. Pasqualetti and R. Passaquieti and D. Passuello and Gianluca Persichetti and F. Piergiovanni and Małgorzata Pietka and L. Pinard and R. Poggiani and Marco Prato and Giovanni Andrea Prodi and M. Punturo and P. Puppo and D. S. Rabeling and Istv{\'a}n Andr{\'a}s R{\'a}cz and P. Rapagnani and Valerio Re and Tania Regimbau and F. Ricci and Florent Robinet and Alessio Rocchi and L{\"o}ıc Rolland and Raffaele Romano and Danuta Rosinska and P. Ruggi and Beno{\^i}t Sassolas and Daniel Sentenac and Laura Sperandio and Riccardo Sturani and B. L. Swinkels and Matteo Tacca and Luca Taffarello and Alessandra Toncelli and Mara Tonelli and O. De La Torre and E. Tournefier and Flavio Travasso and Gabriele Vajente and J. F. J. van den Brand and Chris Van Den Broeck and S. van der Putten and M{\'a}ty{\'a}s Vas{\'u}th and M. Vavoulidis and Gabriele Vedovato and D. Verkindt and F. Vetrano and Andrea Vicer{\`e} and J Y Vinet and Salvatore Vitale and Helios Vocca and Robert L. Ward and Michal Was and M. Yvert and Adam Zadrozny and J P Zendri},
  journal={The Review of scientific instruments},
  volume={82 9},
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… CONTINUE READING