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1 LAUM - Laboratoire d-acoustique de l-université du Maine

Abstract : 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.

Keywords : ironless loudspeaker three-dimensional approaches analytical calculation magnetic field uniform magnetization





Autor: Romain Ravaud - Guy Lemarquand -

Fuente: https://hal.archives-ouvertes.fr/



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