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Diagnostic de défauts des systèmes à représentation multi-modèle linéaire invariant dans le temps

Abstract : The introduction sets the framework of the research task presented: fault diagnosis on nonlinear systems whose approximate model is obtained by interpolation of linear models: these models being able to be regarded as resulting from a linearization around operating points. The first chapter presents elements of bibliography in the context of systems described by multiple models. The second chapter introduces the contribution of work when an exact decoupling of the faults influence makes it possible to break up the treatment of monitoring into two levels: active operating mode estimation and detection-estimation of the additive faults. The third chapter describes the case where, exact decoupling not being possible anymore due to, in particular, the limited uncertainties introduced into the models, it is necessary to consider a compromise leading to the search of an optimal solution. These final chapters end with an academic example which illustrates the performances of the developed method. The conclusion sums up the elements of the document and introduces some prospects.
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http://docnum.univ-lorraine.fr/prive/SCD_T_2004_0198_ADAM_MEDINA.pdf
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https://hal.univ-lorraine.fr/tel-01746726
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Submitted on : Thursday, March 29, 2018 - 10:43:29 AM
Last modification on : Saturday, October 16, 2021 - 11:14:14 AM

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  • HAL Id : tel-01746726, version 1

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Manuel Adam Medina. Diagnostic de défauts des systèmes à représentation multi-modèle linéaire invariant dans le temps. Autre. Université Henri Poincaré - Nancy 1, 2004. Français. ⟨NNT : 2004NAN10198⟩. ⟨tel-01746726⟩

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