 |
|
|
|
| HAL: hal-00366545, version 1 |
| DOI: 10.2528/PIER09021104 |
| Detailed view |  Export this paper |
|
|
| Progress In Electromagnetics Research PIER 91 (2009) 53-68 |
|
|
|
|
| Modelling an Ironless Loudspeaker by Using Three-Dimensional Analytical Approaches |
|
|
| Romain Ravaud 1Guy Lemarquand 1 |
|
|
| (2009-03-06) |
|
|
|
| This paper presents some improved three-dimensional expressions of the magnetic field created by tile permanent magnets uniformly and radially magnetized for the design of ironless loudspeaker structures. All the expressions determined have been reduced to compact forms. We use these expressions for the optimization of ironless loudspeaker structures in which the radial field must be radially uniform. Indeed, as ring permanent magnets radially magnetized are rather difficult to manufacture, these magnets are replaced by assemblies of tile permanent magnets radially and uniformly magnetized. We present an example of ironless loudspeaker structure that has been optimized with our three-dimensional approaches. |
|
|
|
|
|
|
|
|
|
|
|
| 1: | Laboratoire d'acoustique de l'université du Maine (LAUM) |
|
|
|
CNRS : UMR6613 – Université du Maine |
|
|
|
|
|
|
|
|
|
| Subject | : | Physics/Mechanics/Acoustics Engineering Sciences/Acoustics Engineering Sciences/Electromagnetism |
|
|
| ironless loudspeaker – three-dimensional approaches – analytical calculation – magnetic field – uniform magnetization |
|
|
|
| Attached file list to this document: | |||||
|
|||||
|
|
|
| hal-00366545, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00366545 | |
| oai:hal.archives-ouvertes.fr:hal-00366545 | |
| From: Romain Ravaud | |
| Submitted on: Monday, 9 March 2009 08:17:23 | |
| Updated on: Thursday, 3 September 2009 13:32:50 | |
