Optimisation des correcteurs par les métaheuristiques. Application à la stabilisation inertielle de ligne de visée.

Abstract : In the industrial framework, the control engineer must design a unique control law that valid on a single prototype, with a sufficient degree of robustness to satisfy a complex specification on many systems. For that purpose, his development methodology consists of an experimental iterative process (trial and error phase), which relies heavily on the experience of the engineer. In this thesis, we try to make the methodology for computing controllers more efficient and more direct with a less costly development time by calculating a final structured controller by a direct optimization on the high level specification.The complexity of high-level specifications pushes us to the use of metaheuristics: these optimization techniques do not require the formulation of the gradient, the only constraint being the possibility of evaluating the specification. Thus we proposed in this work to reformulate robust control problems for stochastic optimization: we show in this work how to synthesize structured controllers for control problems such H synthesis or -synthesis and show that the interest of the formulated approach lies in its flexibility and the consideration of exotic complex constraints. Evolutionary algorithms proving very effective and competitive, we finally developed on this basis a new method for synthesizing robust and structured controllers with respect to any form of optimization criteria. The validation of this work was carried out on the industrial example of the line of sight stabilization problem.
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Philippe Feyel. Optimisation des correcteurs par les métaheuristiques. Application à la stabilisation inertielle de ligne de visée.. Autre. CentraleSupélec, 2015. Français. ⟨NNT : 2015CSUP0011⟩. ⟨tel-01260457v2⟩

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