Utilisation des techniques de redondances matérielles et analytiques à la détection de pannes de capteurs. Application aux centrales nucléaires

Abstract : The study of failure detection concentrates on the folLowing points : - detection strictly speaking, - location the defective sensor, - correction of the error. The efficiency of a few methods applied to steady-state analytic redundancy, whether linearor not, is evaluated (parity space, standardized imbalance residuals approach, standardized least-square residuals analysis) using simulated data. The use of non-linear models for analytical redundancy is examined. From the standardized imbalance residuals approach (SIRA) and the standardized least-square residuals analysis (SLSRA), we present an extension to non-linear models. vVe dwell on the mathematical properties of the non-linear models. We show the problem of the computation of the estimate of the true values vector and the difficulties that we meet with fusion of not necessarily linear equations. The SLSRA is essentially examined with constraint linearization.The SLSRA method with constraint linearization was applied to the nstrumentation of a stearri generator in the Paluel PWR plant. Results are promising.
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Frédéric Kratz. Utilisation des techniques de redondances matérielles et analytiques à la détection de pannes de capteurs. Application aux centrales nucléaires. Autre. Université Henri Poincaré - Nancy 1, 1991. Français. ⟨NNT : 1991NAN10072⟩. ⟨tel-01747485⟩

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