| 摘要 |
PROBLEM TO BE SOLVED: To provide a damping device for a steel sheet superior in general versatility, which can easily change and set optimal control parameters corresponding to a line, even when line conditions are changed. SOLUTION: This device controls magnetic force of electric magnets 9 and 10 arranged at each side of the steel sheet 1 moving by suspension between an inlet side roller 2 and an outlet side roller 3, with a control system through detecting a distance between the moving steel sheet and the magnets 9 and 10 by a sensor 11 to approach the distance to a desired valve. The device also automatically changes the control parameters of the controlling system to the optimal values, based on conditions of the steel sheet such as sheet thickness, sheet width, and tensile strength, and on a roll span, which is a distance between the inlet side roller 2 and the outlet side roller 3.
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