نتایج جستجو برای: fuzzy system modeling

تعداد نتایج: 2576824  

2014
Lakhmissi Cherroun Mohamed Boumehraz

This paper introduces the application of the hybrid approach Adaptive Neuro-Fuzzy Inference System (ANFIS) for fault classification and diagnosis in industrial actuator. The ANFIS can be viewed either as a fuzzy inference system, a neural network or fuzzy neural network (FNN). This paper integrates the learning capabilities of neural network to the robustness of fuzzy systems in the sense that ...

Journal: :نظریه تقریب و کاربرد های آن 0
m. mosleh department of mathematics, islamic azad university, firuozkooh branch, firuozkooh, iran. s. abbasbandy department of mathematics, science and research branch, islamic azad university, tehran 14515/775, iran. m. otadi department of mathematics, islamic azad university, firuozkooh branch, firuozkooh, iran.

in this paper, a numerical method for nding minimal solution of a mn fullyfuzzy linear system of the form ax = b based on pseudo inverse calculation,is given when the central matrix of coecients is row full rank or column fullrank, and where a~ is a non-negative fuzzy mn matrix, the unknown vectorx is a vector consisting of n non-negative fuzzy numbers and the constant b isa vector consisti...

Journal: :iranian journal of science and technology (sciences) 2015
g. hassanifard

chaotic systems are nonlinear dynamic systems, the main feature of which is high sensitivity to initial conditions. to initiate a design process in fuzzy model, chaotic systems must first be represented by t-s fuzzy models. in this paper, a new fuzzy modeling method based on sector nonlinearity approach has been recommended for chaotic systems relating to initial condition variations using the ...

Journal: :IEEE Trans. Fuzzy Systems 1998
Mohammad Reza Emami I. Burhan Türksen Andrew A. Goldenberg

This paper proposs a systematic methodology of fuzzy logic modeling as a generic tool for modeling of complex systems. The methodology conveys three distinct features: 1) a unified parameterized reasoning formulation; 2) an improved fuzzy clustering algorithm; and 3) an efficient strategy of selecting significant system inputs and their membership functions. The reasoning mechanism introduces f...

1999
Robert J. Hammell Thomas Sudkamp

Fuzzy models have been designed to represent approximate or imprecise relationships in complex systems and have been successfully employed in control systems, expert systems, and decision analysis. Classically, fuzzy models were built from human expertise and knowledge of the system being modeled. As systems have grown more complex it has become increasingly difficult to construct models direct...

Journal: :IEEE Trans. Fuzzy Systems 1993
Michio Sugeno Takahiro Yasukawa

This paper discusses a general approach to qualitative modeling based on fuzzy logic. The method of qualitative modeling is divided into two parts: fuzzy modeling and linguistic approximation. It proposes to use a fuzzy clustering method (fuzzy c-means method) to identify the structure of a fuzzy model. To clarify the advantages of the proposed method, it also shows some examples of modeling, a...

Journal: :international journal of smart electrical engineering 0
shiva rahimipour amirkabir university of technology mahnaz mohaqeq amirkabir university of technology s.mehdi hashemi amirkabir university of technology

short term prediction of traffic flow is one of the most essential elements of all proactive traffic control systems. although various methodologies have been applied to forecast traffic parameters, several researchers have showed that compared with the individual methods, hybrid methods provide more accurate results . these results made the hybrid tools and approaches a more common method for ...

Journal: :Int. J. Approx. Reasoning 2007
Jesús González Ignacio Rojas Héctor Pomares Luis Javier Herrera Alberto Guillén José M. Palomares Fernando Rojas Ruiz

The identification of a model is one of the key issues in the field of fuzzy system modeling and function approximation theory. An important characteristic that distinguishes fuzzy systems from other techniques in this area is their transparency and interpretability. Especially in the construction of a fuzzy system from a set of given training examples, little attention has been paid to the ana...

Journal: :Information & Security: An International Journal 2019

2015
Meena Tushir

Abstract. Recently, a number of extensions to classical fuzzy logic systems (type-1 fuzzy logic systems) have been attracting interest. One of the most widely used extensions is the interval type-2 fuzzy logic systems. An interval type-2 TSK fuzzy logic system can be obtained by considering the membership functions of its existed type-1 counterpart as primary membership functions and assigning ...

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