Improved nonlinear fault detection strategy based on the Hellinger distance metric: Plug flow reactor monitoring
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ArticleKAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) DivisionStatistics Program
KAUST Grant Number
OSR-2015-CRG4-2582Date
2017-03-18Online Publication Date
2017-03-18Print Publication Date
2017-05Permanent link to this record
http://hdl.handle.net/10754/623037
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Fault detection has a vital role in the process industry to enhance productivity, efficiency, and safety, and to avoid expensive maintenance. This paper proposes an innovative multivariate fault detection method that can be used for monitoring nonlinear processes. The proposed method merges advantages of nonlinear projection to latent structures (NLPLS) modeling and those of Hellinger distance (HD) metric to identify abnormal changes in highly correlated multivariate data. Specifically, the HD is used to quantify the dissimilarity between current NLPLS-based residual and reference probability distributions obtained using fault-free data. Furthermore, to enhance further the robustness of these methods to measurement noise, and reduce the false alarms due to modeling errors, wavelet-based multiscale filtering of residuals is used before the application of the HD-based monitoring scheme. The performances of the developed NLPLS-HD fault detection technique is illustrated using simulated plug flow reactor data. The results show that the proposed method provides favorable performance for detection of faults compared to the conventional NLPLS method.Citation
Harrou F, Madakyaru M, Sun Y (2017) Improved nonlinear fault detection strategy based on the Hellinger distance metric: Plug flow reactor monitoring. Energy and Buildings. Available: http://dx.doi.org/10.1016/j.enbuild.2017.03.033.Sponsors
This publication is based upon work supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No: OSR-2015-CRG4-2582.Publisher
Elsevier BVJournal
Energy and BuildingsAdditional Links
http://www.sciencedirect.com/science/article/pii/S0378778816308520ae974a485f413a2113503eed53cd6c53
10.1016/j.enbuild.2017.03.033