| Titre : | Automatic shielding-shimming magnetic field compensator for excluded volume applications (2011) |
| Auteurs : | Guillermo Forte, Auteur ; German Farrher, Auteur ; Luis R. Canali, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | IEEE Transactions on control systems technology (Vol. 18 N° 4, Juillet 2010) |
| Article en page(s) : | pp. 976-983 |
| Note générale : | Génie Aérospatial |
| Langues : | Anglais |
| Index. décimale : | 629.1 |
| Tags : | Active shielding shimming Excluded volume Fast field cycling nuclear magnetic resonance (FFC-NMR) Magnetic compensation Multiple-input Multiple-output (MIMO) control |
| 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.
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| DEWEY : | 629.1 |
| ISSN : | 1063-6536 |
| En ligne : | http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5282506 |
