Proposta de uma metodologia de otimização evolucionária robusta utilizando a transformada unscented aplicável a circuitos de RF/microondas

AUTOR(ES)

Maisa Netto Leidemer

DATA DE PUBLICAÇÃO

2009

RESUMO

Multi-objective optimization problems in the presence of uncertainties occur very often in engineering. The manufacture of devices, for example RF/microwaves circuits, is surrounded by uncertainties associated to the manufacturing components. So its desirable to establish a method that renders a robust design in which uncertainties are considered during the optimization process. This dissertation presents this method utilizing the concepts of evolutionary multiobjective optimization and sensitivity analysis. The Unscented Transformation is used in the sensitivity analysis and as an auxiliary tool of robust optimization algorithm. The robust design is a three-part project: the characterization of the uncertainties associated with the problem, the identification of the sensitivity parameters and the robust optimization. The method presented is tested in analytical functions and the robust project of a class-E power amplifier operating in UHF band is elaborated.

ASSUNTO(S)

análise de sensibilidade otmização robusta algoritmos evolucionários telecomunicacoes transformada unscented nsga-ii amplificador classe e

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