METHOD OF DESIGNING SHAPE OF MAGNETIC CIRCUIT FOR SPEAKER, AND MAGNETIC CIRCUIT FOR SPEAKER FABLICATED BY THE METHOD

摘要

PROBLEM TO BE SOLVED: To provide a method of designing the shape of a magnetic circuit for speaker by which evaluation precision is enhanced and the optimal shape is generated.;SOLUTION: The method of designing the shape of the magnetic circuit for speaker comprises steps of: acquiring shape data of the magnetic circuit from the outside; simulating magnetic flux density distribution of a voice coil provided in a gap of the magnetic circuit on the basis of the relevant acquired shape data; calculating an average value and a variance value of the magnetic flux density distribution acquired by the relevant simulation; evaluating the magnetic flux density distribution of the voice coil on the basis of the relevant calculated average value and variance value; determining whether the shape of the magnetic circuit should be modified, in accordance with a result of the relevant evaluation; iteratively implementing the series of steps in the case where it is determined that the shape modification is required; and outputting the shape data acquired the last as the optimal shape data in the case where it is determined that the shape modification of the magnetic circuit is not required.;COPYRIGHT: (C)2009,JPO&INPIT