Method for quality monitoring of longitudinally moving yarn at workplace of textile machine manufacturing cross-coil, involves measuring errors in yarn using tester and evaluation device

摘要

The method involves measuring errors in the yarn (19) using a tester (5) and an evaluation device (13) in terms of their deviation and longitudinal diameters with a variation in the coordinates of diameter deviation longitudinal coordinates. A bandwidth is defined for the position of the cleaning line in the coordinate system, which is not evaluated as an error below the diameter variation by a lower limit. An upper limit is also defined above which each error is limited.