| 摘要 |
<p>PURPOSE:To evade an up-and-down motion and an inclination from a standard pass line of a steel plate, and a measuring error in case an angle in the advancing direction is varied, by forming plural groups by position detectors at each edge, and correcting a position, in a titled method for detecting both edges of the steel plate at three or more points in the longitudinal direction of the steel plate. CONSTITUTION:At three measuring points (a)-(c) which have left a prescribed interval L in the longitudinal direction of a steel plate 1 both edge positions of the plate 1 are detected by a command from an arithmetic part whenever the steel plate 1 moves by the length L. This detection is executed by position detectors 201-212 which have left a prescribed distance in the upper part of the plate 1, totaling to 12 sets consisting of two sets each to each edge. Their signals are sent to position detecting parts 301-312, and each position detecting result is stored successively in position storage parts 401- 412 at every measurement. From said measuring result, an arithmetic for correcting a position detecting error in case when an up-and-down motion and an inclination from a standard pass line of the plate 1 have been generated is executed by arthmetic parts 51-56, and a width center position at the points (a)-(c) is derived by arithmetic parts 61-63. Subsequently, the superposed arithmetic is executed by an arithmetic part 7, and the continuation is executed in the longitudinal direction.</p> |
