| 摘要 |
PROBLEM TO BE SOLVED: To provide a correction method for the magnetic force measurement data of a magnet roll, whereby the measurement data of any one of different magnetic force measurement devices makes it possible to estimate the measurement data of the other magnetic force measurement devices. SOLUTION: When the measurement data of the magnetic force measurement device B is corrected with the measurement data of the magnetic force measurement device A as a reference, a difference between a magnetic flux density value Tr<SB>A</SB>obtained by the magnetic force measurement device A at a predetermined angleθand a magnetic flux density value Tr<SB>B</SB>obtained by the magnetic force measurement device B at the predetermined angleθ, namely Tr<SB>A</SB>-Tr<SB>B</SB>=ΔTr, is used as a correction value at the predetermined angleθ, and correction values (ΔTr<SB>1</SB>,ΔTr<SB>2</SB>,ΔTr<SB>3</SB>, ...ΔTr<SB>n</SB>) are calculated in advance. The correction values (ΔTr<SB>1</SB>,ΔTr<SB>2</SB>,ΔTr<SB>3</SB>, ...ΔTr<SB>n</SB>) are added to the magnetic flux density values (Tr<SB>B1</SB>, Tr<SB>B2</SB>, Tr<SB>B3</SB>, ...Tr<SB>Bn</SB>). Thereby the corrections are made as the magnetic flux density values (Tr<SB>A'1</SB>, Tr<SB>A'2</SB>, Tr<SB>A'3</SB>, ...Tr<SB>A'n</SB>) obtained by the magnetic force measurement device A. COPYRIGHT: (C)2007,JPO&INPIT
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