Tikkala , V-M & Jämsä-Jounela , S-L 2012 , ' Monitoring of Caliper Sensor Fouling in a Board Machine Using Self-Organizing Maps ' EXPERT SYSTEMS WITH APPLICATIONS , vol 39 , no. 12 , pp. 11228-11233 .
Abstract:
This paper presentes a process-monitoring scheme utilising adaptive self-organising maps (SOM) to detect process conditions that lead to the fouling of a caliper sensor in a board machine. The scheme is based on mapping on a SOM the process measurements and the calculated variables which provide insight into the chemical phenomena involved in fouling to classify faulty process conditions. The time-variant nature of the board making process was taken into account by regularly re-training the SOM. The monitoring scheme is demonstrated with industrial data, and the results are presented and discussed.