| 摘要 |
A steel sheet shape control method whereby (A) a target corrected shape of a steel sheet at an electromagnet position is set to a curved shape by means of a first numerical analysis, (B) a steel sheet shape is measured with the steel sheet being fed while electromagnetically corrected such that the steel sheet takes the target corrected shape at an electromagnet position, (C) a steel sheet shape at a nozzle position is calculated on the basis of said steel sheet shape, (D) if the amount of warpage of the steel sheet at the nozzle position is equal to or greater than a first upper limit value, the target corrected shape is reset to a curved shape with a smaller amount of warpage, and the steps (B) and (C) are repeated, (E) if the amount of warpage of the steel sheet at said nozzle position is smaller than the upper limit value, (F) vibration of the steel sheet at the nozzle position is calculated by means of a second numerical analysis, and (G) if the amplitude of said vibration is equal to or greater than a second upper limit value, a control gain of the electromagnets is adjusted until said amplitude becomes smaller than the second upper limit value. |
