Finite memory observer based method for failure detection in dynamic systems
| Autor: | José Ragot, Walter Nuninger, Frédéric Kratz |
|---|---|
| Přispěvatelé: | Ragot, José, Centre de Recherche en Automatique de Nancy (CRAN), Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique de Lorraine (INPL)-Université Henri Poincaré - Nancy 1 (UHP) |
| Jazyk: | angličtina |
| Rok vydání: | 1997 |
| Předmět: |
020301 aerospace & aeronautics
0209 industrial biotechnology sliding observation window Observer (quantum physics) residual generation robustness 02 engineering and technology General Medicine Fault (power engineering) Fault detection and isolation finite memory observer 020901 industrial engineering & automation 0203 mechanical engineering Control theory Robustness (computer science) Sliding window protocol [INFO.INFO-AU]Computer Science [cs]/Automatic Control Engineering State observer Divergence (statistics) Alpha beta filter [INFO.INFO-AU] Computer Science [cs]/Automatic Control Engineering Mathematics |
| Zdroj: | HAL 11th International Federation of Automatic Control Symposium on System Identification, SYSID '97 11th International Federation of Automatic Control Symposium on System Identification, SYSID '97, Jul 1997, Fukuoka, Japan. pp.1189-1194 |
| Popis: | International audience; In the past decade, interest has been focused on the use of analytic redundancy for the Fault Detection and Isolation (FDI) (Frank, 1990; Gertler, 1991). Many applications in the FDI area use the state estimation technique to generate the accentuated fault functions, so-called residuals. Subsequent analysis of residuals may provide an information about a faulty component localisation. It is well known that infinite observer memory leads to the so-called divergence phenomenon caused by the model errors that observer tends to accumulate during its performance [Toda et al., 1978]. Moreover, the infinite memory inflicts observer insensitivity to recent measurements. This shortcoming brings us to the conclusion that an observer structure with finite memory would be more appropriate for the FDI. This paper presents extensions and improvements on the finite memory observer. The main contribution is to incorporate the parity relation design and observer into a diagnosis scheme and how to choose optimal length of the memory. The application of the finite memory observer to the sensor fault detection problem is illustrated by a numerical example. Simulation results show that the method is very effective for robust fault detection. |
| Databáze: | OpenAIRE |
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