Patent ID: 9429557
Filing Date: 2016-08-30
CPC Classification: D21G,G01N,G05B

Claim Text:
1. A method for at least one of a production and a processing of a web-shaped material, comprising: activating at least one measuring system to record m measurement values y determining a rational quality number Q, wherein a value of the rational quality number corresponds to a quality of the web-shaped material considered acceptable and lies within an acceptance range that is to be empirically determined for the production process, wherein the acceptance range has a lower limit U and an upper limit O, wherein U and O are in each case rational numbers subject to the condition according to: where the value of the quality number Q is calculated as a function of moments M i according to formula 2, where: and where the moments M i are calculated from a function value of a cubic spline function S(x) for the n different measurement positions according to formula 3, where: where: x is a control variable in direction of the width s of the web-shaped material in interval [x x and wherein, based on the measurement values y ik and using the formula 3 as a representation of the function value of the cubic spline function S(x), formula 4 applies to the moments M i , where wherein continued production and/or processing of the web-shaped material is controlled based at least in part upon the calculated quality number Q.