Análise Multifractal de Movimentos Persistentes num Sistema de Controle de Atitude
DOI:
https://doi.org/10.5540/tema.2006.07.02.0307Abstract
O presente trabalho caracteriza movimentos persistentes num sistema de controle de atitude que possui atuadores sujeitos a atrasos e restrições de chaveamento e controlador de primeira ordem, como no caso de satélites ou do VLS (Veículo Lançador de Satélite) brasileiro. Através de simulações, e utilizando o método WTMM (wavelet transform modulus maxima) para calcular o espectro de singularidades dos atratores, foram obtidos diagramas de bifurcação no espaço de parâmetros do controlador (ℜ2), que permitiram discriminar e conhecer os possíveis atratores para cada conjunto de parâmetros. Os resultados foram comparados com a dimensão de Lyapunov.References
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