Title:
MAGNETIC FIELD CALCULATION DEVICE
Document Type and Number:
Japanese Patent JP3257110
Kind Code:
B2
Abstract:
PURPOSE: To enable calculating magnetic field accurately, easily and in a short time even for a complicated coil shape by dividing the coil surface into approximated polygons, especially triangles and integrating each area for surface element.
CONSTITUTION: Coil surface is separated into polygons, especially triangles and current density spectrum J (A/m) flowing in the coil and coordinates of a calculation point 9 in the polygons are input to obtain magnetic fields H (A/m) with an equation, H=1/4πξs(n×J)/γXdS (where γ(m): distance from the coil surface to the calculation point P 9, S: surface area of coil region 7, n: unit radial vector against the surface area S, D: length of current element 8). By this, the magnetic fields are easily calculated even for a complicated coil shape.
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Inventors:
Tetsuya Imai
Akira Ahagon
Kazuyuki Sakiyama
Akira Ahagon
Kazuyuki Sakiyama
Application Number:
JP810893A
Publication Date:
February 18, 2002
Filing Date:
January 21, 1993
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
G01R33/00; G01R33/02; G06J1/02; (IPC1-7): G01R33/00; G01R33/02; G06J1/02
Domestic Patent References:
| JP1119779A |
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)