SHAPE DETECTION

摘要

PURPOSE:To compensate a detection error for making precise detection by a precess wherein from the maximum value of the output signals of a shape detection cell set up in the direction of the width of rolled material each output signal is subtracted to detect the shape in the direction of the width using the value gained by the division of said value by the minimum value. CONSTITUTION:The lengthwise voltage signals VR1-VR3 and the transverse voltage signals Vr1-Vr3 of the rolled material gained by the each shape detection cells 21-23 are subtracted by the subtractors to gain the signal corresponding to the tention value sigmai. The maximum signal gained by the selector 34 is given to the subtractor, each tention signal is subtracted and the signal corresponding to the tention fluctuation quantity DELTAsigmai are given to the dividors 38-40. On the other hand the minimum value signal of the minimum value selector 41 is put into the dividers 38-40 to divide DELTAsigmai by said minimum value and the output thereof is given to the shape arithmetic unit 42 to detect the traverse shape of the rolled material. Accordingly the detection error is compensated to make it possible to perform detection with high precision.