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http://dx.doi.org/10.6109/jkiice.2020.24.2.192

Fault Detection Method for Multivariate Process using ICA  

Jung, Seunghwan (Department of Electrical and Computer Engineering, Pusan National University)
Kim, Minseok (Department of Electrical and Computer Engineering, Pusan National University)
Lee, Hansoo (Department of Electrical and Computer Engineering, Pusan National University)
Kim, Jonggeun (Department of Electrical and Computer Engineering, Pusan National University)
Kim, Sungshin (Department of Electrical and Computer Engineering, Pusan National University)
Abstract
Multivariate processes, such as large scale power plants or chemical processes are operated in very hazardous environment, which can lead to significant human and material losses if a fault occurs. On-line monitoring technology, therefore, is essential to detect system faults. In this paper, the ICA-based fault detection method is conducted using three different multivariate process data. Fault detection procedure based on ICA is divided into off-line and on-line processes. The off-line process determines a threshold for fault detection by using the obtained dataset when the system is normal. And the on-line process computes statistics of query vectors measured in real-time. The fault is detected by comparing computed statistics and previously defined threshold. For comparison, the PCA-based fault detection method is also implemented in this paper. Experimental results show that the ICA-based fault detection method detects the system faults earlier and better than the PCA-based method.
Keywords
fault detection; process monitoring; independent component analysis; multivariate process;
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Times Cited By KSCI : 2  (Citation Analysis)
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