| 摘要 |
<p>PURPOSE:To suppress the edge elongation shape of a steel sheet by executing symmetric bender control and asymmetric bender control in accordance with the plural shape mode coeffts. obtd. by subjecting the shape mode coefft. to be the basis of the asymmetric bender control to correction computation. CONSTITUTION:The shape mode coefft. to be the basis of the asymmetric bender control among the shape mode coeffts. is subjected to the correction computation by substituting this coefft. into the correction computation equation stored in a controller. The deviations between this shape mode coeffts. and the respective target values are respectively determined. A work roll bender is subjected to the symmetric bender control and the asymmetric bender control with these deviations as controlled variable, by which the shape of the steel sheet is set and the processing is ended. The bender is well corrected in the case of an ordinary shape but the shape is not symmetrical to the center line in the case of a specific shape (edge elongated shape) and, therefore, the asymmetric bender control is executed.</p> |
