A modified observer scheme for fault detection and isolation applied to a poorly observed process with integration |
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Authors: | Luis A. Aguirre Marcus F.S. Pereira |
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Affiliation: | Centro de Pesquisa e Desenvolvimento em Engenharia Elétrica, Laboratório de Controle de Processos Industriais, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, 31270-901 Belo Horizonte, M.G., Brazil |
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Abstract: | This paper investigates the application of the dedicated observer scheme (DOS) to a real tank system. As described, this system is not ‘DOS-instrument-fault-detectable’ due to the location of the sensors and the dynamical characteristics of the system itself. In order to overcome such a difficulty, this work proposes a dedicated observer scheme with periodic resetting (DOSPR). The design of the observers and the new algorithm are detailed in the paper. The new procedure was tuned and tested on a pilot plant. A complete nonlinear model with physical parameters measured from the plant are included. Some results are discussed in the paper. |
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Keywords: | fault detection and isolation observers monitoring systems |
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