JACIII Vol.16 No.4 pp. 503-507
doi: 10.20965/jaciii.2012.p0503


Semi-Qualitative Trend Analysis for the Monitoring of Process Control Loops

Yoshiyuki Yamashita

Department of Chemical Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan

December 20, 2011
March 31, 2012
June 20, 2012
process monitoring, process control, fault diagnosis, control valve, maintenance
This paper first introduces a semi-qualitative methodology to analyze a time trend based on a qualitative description with the addition of quantitative attributes. Using this methodology, it further defines a method to diagnose and qualify a control valve problem in a process control loop. Finally, the defined method of diagnosis successfully applied to several actual data sets from industrial chemical plants.
Cite this article as:
Y. Yamashita, “Semi-Qualitative Trend Analysis for the Monitoring of Process Control Loops,” J. Adv. Comput. Intell. Intell. Inform., Vol.16 No.4, pp. 503-507, 2012.
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