Proceedings of the 11th International Conference on Modelling, Identification and Control (ICMIC2019) pp 423-432 | Cite as
Nonlinear Observer Based Fault Diagnosis for an Innovative Intensified Heat-Exchanger/Reactor
Abstract
This paper describes an application of a fault detection and isolation (FDI) scheme for an intensified Heat-exchanger (HEX)/Reactor, where the exothermic chemical reaction of sodium thiosulfate oxidation by hydrogen peroxide is performed. To achieve this, precise estimation of all states of HEX/Reactor, including temperatures and concentrations of different reactants, as well as process fault detection and isolation is completed by a high gain observer. Then, process fault identification is achieved by several banks of interval filters. Finally, an intensified HEX/reactor is used to validate the effectiveness of the proposed strategy. Simulation results are shown to illustrate the performance of the algorithm presented.
Keywords
Fault diagnosis Fault identification High gain observer Parameter interval filter HEX/reactorNotes
Acknowledgements
This work was supported by China Scholarship Council (CSC); the National Nature Science Foundation of China under Grant 61963009; the Department of Science and Technology of Guizhou (grand numbers [2015]4014, [2015]11, [2016]2302, [2019]2154); and the Department of Education of Guizhou (grand numbers ZDXK [2015]8).
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