| 摘要 |
<p>PURPOSE:To execute shape control with extremely high shape convergence without the generation of hunting by adapting the estimated shape of rolling material as the detected value of sheet shape at present point of time, calculating the manipulated variable of each actuator to minimize the value of overall performance function and operating each actuator. CONSTITUTION:The manipulated variable of a means 12 for pushing back-up roll (i.e., the increment for pushing the a back-up roll 5), manipulated variable of a means 13 for moving tapered roll (i.e., movement of a pair of upper and lower tapered rolls 3, 3) and manipulated variable of a means 11 for moving the drawing down position (i.e., correction that is added to the control signal (e) from a thickness controller 9) are calculated based on the detected signal (f) from a sheet shape detector 6 and the target sheet shape signal (g) that is preliminarily set with a sheet shape controller 10 and they are respectively outputted as control signals (h), (i), (d). And, the positions of the back-up roll 5 and tapered rolls 3, 3 are respectively operated by manipulated variables that is instructed according to the control signals (h), (i) with the means 12 for pushing back-up roll and means 13 for moving the tapered rolls and the sheet shape of rolled stock 1 is controlled.</p> |
