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oai:uvadoc.uva.es:10324/455942025-03-26T19:10:03Zcom_10324_1168com_10324_931com_10324_894col_10324_1302

Sánchez-Fernández, Alvar Baldán, Francisco Javier Sáinz Palmero, Gregorio Ismael Benítez, José Manuel Fuente Aparicio, María Jesús de la 2021-03-09T13:52:50Z 2021-03-09T13:52:50Z 2018 Chemometrics and Intelligent Laboratory Systems, Noviembre 2018, vol. 182, p. 57–69 0169-7439 http://uvadoc.uva.es/handle/10324/45594 10.1016/j.chemolab.2018.08.003 57 69 Fault detection based on time series modeling and multivariate statistical process control 182 Producción Científica Monitoring complex industrial plants is a very important task in order to ensure the management, reliability, safety and maintenance of the desired product quality. Early detection of abnormal events allows actions to prevent more serious consequences, improve the system's performance and reduce manufacturing costs. In this work, a new methodology for fault detection is introduced, based on time series models and statistical process control (MSPC). The proposal explicitly accounts for both dynamic and non-linearity properties of the system. A dynamic feature selection is carried out to interpret the dynamic relations by characterizing the auto- and crosscorrelations for every variable. After that, a time-series based model framework is used to obtain and validate the best descriptive model of the plant (either linear o non-linear). Fault detection is based on finding anomalies in the temporal residual signals obtained from the models by univariate and multivariate statistical process control charts. Finally, the performance of the method is validated on two benchmarks, a wastewater treatment plant and the Tennessee Eastman Plant. A comparison with other classical methods clearly demonstrates the over performance and feasibility of the proposed monitoring scheme. Este trabajo forma parte del proyectos de investigación: MINECO-FEDER DPI2015-67341-C2-2- R, TIN2013-47210-P, TIN2016-81113-R Junata de Andalucia, con el proyecto P12-TIC-2958 application/pdf eng Elsevier info:eu-repo/semantics/restrictedAccess Elsevier Fault detection Dynamic feature selection Time-series modelling Statistical process control charts Fault detection based on time series modeling and multivariate statistical process control info:eu-repo/semantics/article info:eu-repo/semantics/submittedVersion https://www.sciencedirect.com/science/article/abs/pii/S0169743918303459 SI