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Theses

Tolérancement fonctionnel généralisé et intégration dans une approche d’ingénierie système

Abstract : For a mechatronic system, the lack of robustness is mainly due to an ignorance of variability which is unavoidable in every designed system at all stages of its development and during its entire life cycle. In fact, the inherent imperfections of manufacturing processes and operational variations such as material wear or multi-physical effects (thermal, vibrations, etc.) involve parametric variations, which can degrade the proper system function. To ensure a high level of quality and to improve design robustness, the deviations between actual and target definition should be restricted by specified tolerances. Moreover, it is important to understand the relationship between parameters deviations and system behavior. Thus, in this thesis, a variational approach is proposed to specify the admissible parameters deviations for which the given specifications can be guaranteed. Furthermore, this approach is used to identify performances sensitivity to parameters deviations in a mechatronic system and to determine influential parameters that affect significantly the proper functioning of the system and its behavior. The complete approach is applied to an example in the aeronautic field: an electromechanical actuator driving an aircraft primary flight control surface (aileron).
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Submitted on : Monday, August 31, 2020 - 2:34:30 PM
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  • HAL Id : tel-02926170, version 1

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Hana Siala. Tolérancement fonctionnel généralisé et intégration dans une approche d’ingénierie système. Automatique / Robotique. Université Paris-Saclay; Université de Sfax (Tunisie), 2020. Français. ⟨NNT : 2020UPASC015⟩. ⟨tel-02926170⟩

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