| 摘要 |
PROBLEM TO BE SOLVED: To provide a damping apparatus for a steel sheet with which oscillatory waves (the moment components of oscillation) propagated from an external exciting source are effectively shielded, and the oscillation of a steel sheet can be minimized at an objective damping position irrespective of oscillation modes. SOLUTION: In equipment for transporting a strip 1, a pair of electromagnet lines 2, 3 and 4, 5 are provided oppositely to the running strip 1 in two steps to the running direction also in such a manner that the positions of the electromagnet lines are optionally changeable to the running direction. Then, displacement sensors 6, 7 measuring the two points of the displacement in the strip 1 in the positions of the upper electromagnet lines and the positions of the lower electromagnet lines are provided, and a controller 9 for controlling the attraction force of the upper electromagnet lines 4, 5 and the attraction force of the lower electromagnet lines 2, 3 based on the signals from the displacement sensors and minimizing the displacement in the strip 1 at the positions of the upper electromagnet lines and the positions of the lower electromagnet lines is provided. COPYRIGHT: (C)2006,JPO&NCIPI
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