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Optimisation multiobjectif et analyse de sensibilité appliquées à la conception de dispositifs. Application : Synthèse d'antennes à réflecteur embarquées dans un satellite

Abstract : The design of high quality products generally involves the resolution of problems with multiple conflicting objectives and complex search spaces. Multi-objective evolutionary optimization methods are considered as an efficient tool to analyze these highly difficult problems. This thesis, besides presenting a brief review about optimization concepts and methods, also describes the implementation of a multi-objective genetic algorithm (AGMO) associated to sensitivity analysis for optimization of devices (projects). The aim is to provide engineers not only several possible solutions (facilitating negotiations with his/her client), but also the possibility of a deeper understanding of the analyzed problem. The present work brings two main contributions: - An optimization algorithm that deal with parameters space and objective space with the same importance, making easy the search process for optimal solutions; - The development and integration of sensitivity studies, whose goal is to verify how stable the obtained solutions are as well as to test the 'model' adopted by the engineer as representation of his/her problem. Many projects involving electromagnetism were considered to evaluate the procedure proposed; the main application consists in the optimization of an antenna in a satellite system. Remarks are done concerning the action and the characteristics of the AGMO in the analyzed problems. Even if the discussion is based on specific problems, it is general and the conclusions can be extended to any design problem.
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https://tel.archives-ouvertes.fr/tel-00012065
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Submitted on : Thursday, March 30, 2006 - 5:18:58 PM
Last modification on : Wednesday, July 8, 2020 - 12:42:06 PM

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  • HAL Id : tel-00012065, version 1

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Sergio Avila. Optimisation multiobjectif et analyse de sensibilité appliquées à la conception de dispositifs. Application : Synthèse d'antennes à réflecteur embarquées dans un satellite. Autre. Ecole Centrale de Lyon; Universidade Federal de Santa Catarina - UFSC, 2006. Français. ⟨tel-00012065⟩

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