Integrated FDD system for valve stiction in a paperboard machine |
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Authors: | Octavio Pozo Garcia Vesa-Matti Tikkala Alexey Zakharov Sirkka-Liisa Jämsä-Jounela |
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Affiliation: | Aalto University School of Chemical Technology, Department of Biotechnology and Chemical Technology, P.O. Box 16100, 00076 Aalto, Finland |
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Abstract: | The performance of a modern industrial plant can be severely affected by the performance of its key devices, such as valves. In particular, valve stiction can cause poor performance in control loops and can consequently lower the efficiency of the plant and the quality of the product. This paper presents an integrated FDD system for valve stiction which employs various FDD methods in a parallel configuration. A reliability index was integrated into each method in order to estimate their degree of influence in the final diagnosis of the system. Each method and the integrated system were tested using industrial data. |
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