| 摘要 |
<p>PURPOSE:To provide a general purpose method for controlling sheet shape in sheet metal rolling where all of plural shape control mechanisms given by a rolling mill are actuated simultaneously efficiently, an actual control manipulated variable for each control step is obtained even when a certain shape operation mechanism arrives at an operation limit and each shape operation mechanism can scarcely arrive at the operation limit. CONSTITUTION:A rolling mill 1, a shape detector 7 capable of detecting shapes of plural places in a rolled sheet width direction, a target shape setting circuit 9, plural shape controlling mechanisms 11, 12, 13, and an arithmetic unit 10 for an optimum manipulated variable are provided. A process to obtain a 1st evaluation function where the arithmetic unit for the optimum manipulated variable evaluates the sheet shape about all sheet width, a process to obtain a 2nd evaluation function where the operation rate of the shape control mechanism is indicated by a shape variation, a process to calculate the optimum operation rate to minimize the sum of both weighted evaluation functions, a process to set a weight coefficient to the manipulated variable of each shape control mechanism in consideration of the possibility of the operation limit of each shape control mechanism and the similarity to mutual shape control effect are included.</p> |
