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http://dx.doi.org/10.5762/KAIS.2016.17.7.374

Empirical Process Monitoring Via On-line Analysis of Complex Process Measurement Data  

Cho, Hyun-Woo (Department of Industrial and Management Engineering, Daegu University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.17, no.7, 2016 , pp. 374-379 More about this Journal
Abstract
On-line process monitoring schemes are designed to give early warnings of process faults. In the artificial intelligence and machine learning fields, reliable approaches have been utilized, such as kernel-based nonlinear techniques. This work presents a kernel-based empirical monitoring scheme with a small sample problem. The measurement data of normal operations are easy to collect, whereas special events or faults data are difficult to collect. In such situations, noise filtering techniques can be helpful in enhancing the process monitoring performance. This can be achieved by the preprocessing of raw process data and eliminating unwanted variations of data. In this work, the performance of several monitoring schemes was demonstrated using three-dimensional batch process data. The results showed that the monitoring performance was improved significantly in terms of the detection success rate.
Keywords
Monitoring; Nonlinear methods; Noise filtering; Process data; Quality improvement;
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