RESUMOUma metodologia para avaliar a estabilidade e o desempenho robustos de sistemas automáticos de comando de voo Esse artigo apresenta uma metodologia para avaliar a estabilidade robusta e o desempenho robusto de sistemas automáticos de comando de vôo. A ferramenta matemática utilizada na metodologia proposta é o valor singular estruturado, µ. Para fins de comparação, o artigo utiliza uma metodologia largamente utilizada na indústria aeronáutica para mensurar as características mencionadas. Os problemas dessa metodologia são discutidos e é mostrado que o método proposto é uma elegante alternativa para contornar as desvantagens do método industrial. Um procedimento passo a passo é apresentado, incorporando as vantagens da abordagem atualmente utilizada na indústria e eliminando suas fraquezas.Artigo submetido em 09/11/ABSTRACT This article presents a methodology to assess the robust stability and the robust performance of automatic flight control systems (AFCS). The mathematical tool used in the proposed methodology is the structured singular value, µ. For comparison purposes, the paper uses a method largely employed in the aircraft industry to measure the quoted AFCS attributes. The issues existing in this methodology are discussed and it is shown that the proposed method presents one elegant path to deal with the mentioned drawbacks. A step by step procedure is provided, incorporating the advantages offered by the approach currently used in the industry and eliminating its weaknesses.
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