Automatic transfer function synthesis from a Bode plot

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 1990

Autores

P. Lopes dos Santos (Autor) FEUP; Jorge Martins de Carvalho (Autor) FEUP

Ata de Conferência Internacional

Título: Proceedings of the IEEE Conference on Decision and Control

Páginas: 1093-1098

Proceedings of the 29th IEEE Conference on Decision and Control Part 6 (of 6)

Honolulu, HI, USA, 5 December 1990 through 7 December 1990

Indexação

Scopus - 2 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia electrotécnica, electrónica e informática

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia de processos

Outras Informações

ID Authenticus: P-008-NYZ

DOI: 10.1109/cdc.1990.203770

Abstract (EN): A novel algorithm that automatically identifies continuous-time transfer functions from Bode plots is presented. The identification is carried out in two stages. In the first one, the model order and 'good' guesses of the poles and zeros are obtained; in the second stage, estimates are refined by means of a modified Newton-Raphson algorithm. Because poles and zeros estimation only requires the magnitude curve, transport delays, if any, can be easily estimated by means of additional information supplied by the phase curve. The major and novel contribution of the proposed method resides in its first stage, where qualitative notions currently 'hidden' in the intuition of the designer are explicitly represented, yielding a simple optimization procedure that is not impaired by the presence of saddle points or local minima, and that converges very fast to the vicinity of the true solution. A detailed example is also provided to illustrate the value of the method.

Idioma: Inglês

Tipo (Avaliação Docente): Científica