Fuzzy Frequency Response for Complex Dynamic Systems

Author

Ferreira, Carlos Cesar Teixeira ; De Oliveira Serra, Ginalber Luiz

Author_Institution

Dept. of Electroelectronic, Fed. Inst. of Educ., Sci. & Technol. (IFMA), São Luís, Brazil

fYear

2010

fDate

8-10 Sept. 2010

Firstpage

464

Lastpage

469

Abstract

Fuzzy Frequency Response: Definition and Analysis for Complex Dynamic Systems is proposed in this paper. In terms of transfer function, the complex dynamic system is partitioned into several linear sub-models and it is organized into Takagi-Sugeno (TS) fuzzy structure. The main contribution of this approach is demonstrated, from the proposal of a Theorem, that fuzzy frequency response is a boundary in the magnitude and phase Bode plots. Low and high frequency analysis of fuzzy dynamic model is obtained by varying the frequency ω from zero to infinity.

Keywords

frequency response; fuzzy control; fuzzy set theory; large-scale systems; transfer functions; TS fuzzy structure; Takagi-Sugeno fuzzy structure; complex dynamic systems; fuzzy dynamic model; fuzzy frequency response; high frequency analysis; linear submodels; low frequency analysis; phase Bode plots; transfer function; Analytical models; Control systems; Frequency response; Nonlinear dynamical systems; Pragmatics; Steady-state; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Control (ISIC), 2010 IEEE International Symposium on

Conference_Location

Yokohama

ISSN

2158-9860

Print_ISBN

978-1-4244-5360-3

Electronic_ISBN

2158-9860

Type

conf

DOI

10.1109/ISIC.2010.5612922

Filename

5612922