Method for estimating potential distribution and device for estimating potential distribution

摘要

PROBLEM TO BE SOLVED: To provide an estimation method of a potential distribution capable of more precisely estimating the potential distribution of a metallic plate surface from which a current flows out to the external environment.SOLUTION: An estimation method of a potential distribution is a method configured to estimate a potential distribution of a top surface when a surface of a metallic plate from which a current flows out to the external environment is defined as the top surface and the other surface thereof is defined as the rear surface. The method obtains a potential distribution of the rear surface by measurement, and determines a position of an extreme point of the rear surface and a position of an electric conduction point of the top surface from the potential distribution of the rear surface obtained by the measurement, obtains the potential distributions of the top surface and the rear surface from the potential distribution of the metallic plate obtained by a numerical value calculation with the potential of a feeding point provided on the electric conduction point and the metallic plate as a boundary condition, and performs a comparison with the electric potential of the extreme point in the potential distribution of the rear surface obtained by the numerical value calculation and the electric potential of the extreme point in the potential distribution of the rear surface obtained by the measurement, and when a ratio of the electric potential of the extreme point by the measurement to the potential of the extreme point by the measurement is within an allowable range, the potential distribution of the top surface by the numerical value calculation is estimated as the potential distribution of the metallic plate surface.SELECTED DRAWING: Figure 3