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Fuzzy frequency response: Definition and analysis for complex dynamic systems

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2 Author(s)
Ferreira, C.C.T. ; Dept. of Electroelectronic, Fed. Inst. of Educ., Sci. & Technol. (IFMA), Monte Castelo, Brazil ; de Oliveira Serra, G.L.

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.

Published in:

Fuzzy Systems (FUZZ), 2010 IEEE International Conference on

Date of Conference:

18-23 July 2010