| 摘要 |
PROBLEM TO BE SOLVED: To accurately grasp the rapidly changing temperature of a metal sheet heated by electrification heating, in real time. SOLUTION: Resistance R of the metal sheet is found based on the voltage V and the current I under the electrification heating of the metal sheet, and a resistivityρis found thereafter based on a cross-sectional area and a size of the metal sheet. Since the resistivityρis approximated by a quadratic curve ofρ=aT<SP>2</SP>+ bT +c, the temperature is found by solving the equation. The temperature T is found accurately in real time only by measuring the voltage V and the current I. COPYRIGHT: (C)2004,JPO
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