IDENTIFICATION OF TIME-VARYING FUZZY-SYSTEMS

This paper discusses the identification of rime-varying fuzzy systems. A square-root type recursive algorithm with variable forgetting facto r is presented to estimate the parameters of systems. Numerical exampl es are provided to illustrate the performance of the identification al gorithm. An interesting discovery of this paper is that, for a linear system, a fuzzy model may have a frequency response close to that of a conventional model, say, a difference equation model, although the or ders of two models may be different.