JPS5586616A - Optimizing apparatus for gauge controller - Google Patents

Abstract

PURPOSE:To improve the control accuracy of the gauge controller, by continuously measuring the draft percentage for the rolled material using the gauge signals on the entry and exit sides, and by operating the deformation resistance of the rolled material using the rolling load at the reducing point corresponding to above measured draft percentage. CONSTITUTION:The outputs from the gauge detectors 1, 2, on the entry and exit sides are inputted to the arithmetic unit 4; when the rolled material runs in the arrowed direction, the gauge detector 1 works. At the same time, the pulse generators 6, 7, on the entry and exit sides work correspondingly to the detectors 1 and 2. The arithmetic unit 4 operates the deformation resistance from various constants like as the roll diameter, sheet breadth, etc., other than the inputted measurement data, depending on the formula obtained by modifying and improving the authorized theoretical formulas or a part of these formulas so as to be fittable to the actual process. On the other hand, the hysteresis of deformation resistance over all length of the sheet within the pass is memorized in the memory unit 9; at next rolling pass, the roll gap for the following schedule is set depending on the data given by the memory unit 9; and also, the gauge controller 10 works while correcting this roll gap, and similarly works in the following passes too.