An embedded fault detection, isolation and accommodation system in a model predictive controller for an industrial benchmark process

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Fault detection and isolation (FDI) for industrial processes has been actively studied during the last decades. Traditionally, the most widely implemented FDI methods have been based on model-based approaches. In modern process industry, however, there is a demand for data-based methods due to the complexity and limited availability of the mechanistic models. The aim of this paper is to present a data-based, fault tolerant control (FTC) system for a simulated industrial benchmark process, Shell control problem. Data-based FDI systems, employing principal component analysis (PCA), partial least squares (PLS) and subspace model identification (SMI) are presented for achieving fault tolerance in cooperation with controllers. The effectiveness of the methods is tested by introducing faults in simulated process measurements. The process is controlled by using model predictive control (MPC). To compare the effectiveness of the MPC, the FTC system is also tested with a control strategy based on a set of PI controllers.


Original languageEnglish
Pages (from-to)2966-2985
JournalComputers and Chemical Engineering
Issue number12
Publication statusPublished - 2008
MoE publication typeA1 Journal article-refereed

    Research areas

  • FTC, PCA, PLS, SMI, MPC, Shell control problem

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