US 11,703,553 B2
Magnetic field analysis device, analysis method, and computer readable medium storing program
Shuji Miyazaki, Kanagawa (JP)
Assigned to SUMITOMO HEAVY INDUSTRIES, LTD., Tokyo (JP)
Filed by SUMITOMO HEAVY INDUSTRIES, LTD., Tokyo (JP)
Filed on Sep. 4, 2020, as Appl. No. 17/12,682.
Application 17/012,682 is a continuation of application No. PCT/JP2018/041831, filed on Nov. 12, 2018.
Claims priority of application No. 2018-040400 (JP), filed on Mar. 7, 2018.
Prior Publication US 2020/0400757 A1, Dec. 24, 2020
Int. Cl. G01R 33/02 (2006.01); G01N 27/72 (2006.01); G01R 33/12 (2006.01); G01R 33/00 (2006.01)
CPC G01R 33/02 (2013.01) [G01N 27/72 (2013.01); G01R 33/12 (2013.01); G01R 33/0023 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A magnetic field analysis device comprising:
a processing device including a magnetization application unit and a magnetic field calculation unit, the processing device configured to:
divide, by the magnetization application unit, a virtual space into a plurality of volume elements and applies magnetization to each of the plurality of volume elements; and
calculate, by the magnetic field calculation unit, on each of a plurality of observation points in the virtual space, based on the magnetization applied to a portion of the plurality of volume elements around the observation point, a magnetic field generated at the observation point for each volume element and obtain a magnetic field generated at each of the plurality of observation points based on a calculation result of the each of the plurality of volume elements,
wherein the processing device, with the magnetization application unit, is further configured to
divide the virtual space into a plurality of voxels having the same shape and dimension,
apply magnetization to each of the plurality of voxels,
perform coarse graining for collecting a plurality of continuous voxels in a first direction to one volume element to make dimension relating to the first direction greater than dimension relating to a second direction and a third direction on at least a part of the plurality of volume elements, and
apply magnetization to each of the coarse-grained volume elements based on the magnetization applied to the plurality of voxels included in the each of the coarse-grained volume elements.