Title :
Analytical calculation of ironless loudspeaker motors
Author :
Berkouk, M. ; Lemarquand, V. ; Lemarquand, G.
Author_Institution :
Lab. d;Electron. et de Magnet. de Brest, IUT-ENSIETA, France
fDate :
3/1/2001 12:00:00 AM
Abstract :
This paper analyzes a concept for ironless loudspeaker motors. The structure is a torus with a cylindrical air gap, formed by toroidal permanent magnets with a triangular cross section. The advantage of this design is that it permits control of the magnetic field inside the structure. The result is ironless self-shielding devices with small flux leakage
Keywords :
loudspeakers; magnetic circuits; magnetic leakage; magnetic shielding; permanent magnet motors; analytical model; cylindrical air gap; flux leakage; ironless loudspeaker motor; magnetic circuit; magnetic field; self-shielding device; toroidal permanent magnet; triangular cross-section; Design methodology; Loudspeakers; Magnetic analysis; Magnetic devices; Magnetic flux leakage; Magnetization; Permanent magnet motors; Permanent magnets; Toroidal magnetic fields; Two dimensional displays;
Journal_Title :
Magnetics, IEEE Transactions on
