Width position corresponding relation deciding method and manufacturing device using it

Abstract

In order to solve the problems of quality control that relation of position correspondence between an operation end and a measurement point is measured for each brand and the relation is changed, however, much labor is required and when relation of position correspondence is shifted during operation, step response is measured and remeasurement of relation of position correspondence is required. The operation amount of an operation end is inputted to a process model, the relation of position correspondence, interference width and process gain of the process model are corrected so that deviation between the process model and a measured profile is minimized and the relation of position correspondence is set in a width direction controller for outputting an operation amount. Consequently, since the relation of successive position correspondence is corrected to the optimum value during operation, controllability is not deteriorated even if the relation of position correspondence is shifted, labor for measuring the relation of position correspondence for each brand and changing the relation is eliminated.

Description

technical field [0001] The present invention relates to a method for judging the corresponding relationship of positions in the width direction and a sheet product manufacturing device using the method. In the device for manufacturing sheet products, the operating end for controlling the profile in the width direction and the measuring point for measuring the profile can be automatically judged position correspondence. Background technique [0002] There are, for example, the following documents regarding the prior art for judging the correspondence relationship of positions in the width direction. [0003] (Patent Document 1) Japanese Laid-Open Patent No. Hei 09-316791 [0004] (Patent Document 2) Japanese Laid-Open Patent No. Hei 09-049185 [0005] (Patent Document 3) Japanese Laid-Open Patent No. Hei 09-132892 [0006] In FIG. 1, the structure of the part for controlling the profile in the width direction is shown in the apparatus which manufactures a sheet-like produc...

AI Technical Summary

Problems solved by technology

However, it is necessary to carry out the automatic step response test of individual brand devices to determine the position correspondence, and there will be a huge workload in the adjustment work.

[0014] Furthermore, even if the brand device is the same, once the operating conditions such as the basis weight or the paper-making speed are changed, or other production conditions are changed, the position correspondence will also change, and there will be situations where the control cannot cope with this situation. The issue of defective products due to sexual deterioration

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