Patent ID: 8581586

Claim:
A coil pattern calculation method, performed by a coil pattern calculation apparatus, for calculating, based on one or more target magnetic fields, a coil pattern of a coil having an entire coil surface that is divided into two or more coil surfaces, the coil pattern calculation method comprising the steps of: (a) calculating a current potential at each contact between finite surface elements forming each of the coil surfaces based on an initial value of an input current potential distribution; (b) for each of the coil surfaces, repeatedly calculating the current potential alternately and, under each magnetic field condition, determining a current potential distribution that generates a magnetic field falling within the range of allowable error for each target magnetic field so that a surface current represented by the current potential will become close to the target magnetic field distribution set for each of the finite surface elements; and (c) determining the coil pattern of the coil from the contour lines of the determined current potential distribution, wherein the coil configured to have the coil pattern determined in (c) generates a target magnetic field when a current is passed through the coil.