Automatic shielding-shimming magnetic field compensator for excluded volume applications / Guillermo Forte in IEEE Transactions on control systems technology, Vol. 18 N° 4 (Juillet 2010)  

Public ISBD [article]  inIEEE Transactions on control systems technology > Vol. 18 N° 4 (Juillet 2010) . - pp. 976-983 Titre : Automatic shielding-shimming magnetic field compensator for excluded volume applications Type de document : texte imprimé Auteurs : Guillermo Forte, Auteur ; German Farrher, Auteur ; Luis R. Canali, Auteur Année de publication : 2011 Article en page(s) : pp. 976-983 Note générale : Génie Aérospatial Langues : Anglais (eng) Mots-clés : Active shielding shimming Excluded volume Fast field cycling nuclear magnetic resonance (FFC-NMR) Magnetic compensation Multiple-input Multiple-output (MIMO) control Index. décimale : 629.1 Résumé : We discuss the problem of automatic magnetic field compensation within an excluded volume where the magnetic field cannot be sensed in a direct way. Both magnetic field spatial average (shielding) and first order orthogonal gradients (shimming) are considered. The active shielding-shimming compensator is based on a multiple-input multiple-output controller driving a specifically designed coil-set. The magnetic field and its gradients are calculated from the readings of ten hall sensors located outside the exclusion volume. DEWEY : 629.1 ISSN : 1063-6536 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5282506 [article] Automatic shielding-shimming magnetic field compensator for excluded volume applications [texte imprimé] / Guillermo Forte, Auteur ; German Farrher, Auteur ; Luis R. Canali, Auteur . - 2011 . - pp. 976-983. Génie Aérospatial Langues : Anglais (eng) in IEEE Transactions on control systems technology > Vol. 18 N° 4 (Juillet 2010) . - pp. 976-983 Mots-clés : Active shielding shimming Excluded volume Fast field cycling nuclear magnetic resonance (FFC-NMR) Magnetic compensation Multiple-input Multiple-output (MIMO) control Index. décimale : 629.1 Résumé : We discuss the problem of automatic magnetic field compensation within an excluded volume where the magnetic field cannot be sensed in a direct way. Both magnetic field spatial average (shielding) and first order orthogonal gradients (shimming) are considered. The active shielding-shimming compensator is based on a multiple-input multiple-output controller driving a specifically designed coil-set. The magnetic field and its gradients are calculated from the readings of ten hall sensors located outside the exclusion volume. DEWEY : 629.1 ISSN : 1063-6536 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5282506

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