Current-mode CMOS implementations of a membership function circuit, min-max operators, and a defuzzifier circuit are proposed in this paper. The programmability of the proposed Gaussian-type function fuzzifier is achieved by varying the gate reference voltages and the sizes of transistors in the differential pairs. A closed-loop control scheme is employed between the fuzzifier and defuzzifier b...

A new architecture is presented for the implementation of fuzzy systems using analog-digital techniques. This architecture is directed towards allowing the implementation of many rules on the same chip, including the fuzzy inference engine and the defuzzifier. This approach is based on a total or partial sequential operation of both the fuzzifier and the defuzzifier. A basic operational cell fo...

This paper presents a practical approach for defuzzification in digital hardware based fuzzy inference systems . The proposed scheme is a modified version of the center average defuzzifier where instead of using a division stage a piece-wise linear function is implemented to reduce computational time and hardware implementation area. Some simulation probes are presented in order to compare the ...

A new architecture is presented for the implementation of fuzzy systems using analogdigital techniques. This architecture is directed towards allowing the implementation of many rules on the same chip, including the fuzzy inference engine and the defuzzifier. This approach is based on a total or partial sequential operation of both the fuzzifier and the defuzzifier. A basic operational cell for...

Abstract Stratification is a feature of the type-reduced set general type-2 fuzzy set, from which new technique for defuzzification, Stratic Defuzzification, may be derived. Existing defuzzification strategies are summarised. The stratified structure described, after Defuzzifier presented and contrasted experimentally accuracy efficiency with both Exhaustive Method Defuzzification (to benchmark...

This article discusses the automatic control system for parameters (rotor speed and gas temperature) of a turbine engine based on clear logic controllers. It is proposed to use logical controllers, consisting comparing device, fuzzifier, an inference block with production rules given membership functions terms variables, defuzzifier. Precise using precise terms, in loops object’s influence stab...

The Greenfield-Chiclana Collapsing Defuzzifier comes in many variants, depending on the order of slice collapse. The accuracy of the fundamental variants of forward, backward, inward and outward, and the composite variants of forward-backward and outward right-left is compared experimentally for the discretised interval type-2 fuzzy set. Keywords— Centroid, Collapsing, Defuzzification, Interval...

Takagi–Sugeno (TS) fuzzy systems have been employed as fuzzy controllers and fuzzy models in successfully solving difficult control and modeling problems in practice. Virtually all the TS fuzzy systems use linear rule consequent. At present, there exist no results (qualitative or quantitative) to answer the fundamentally important question that is especially critical to TS fuzzy systems as fuzz...

Research has identified Typhoid Fever (TF) as the major cause of morbidity and mortality in most developing countries. The diagnosis of TF involves several variables which usually makes it difficult to arrive at accurate and timely diagnosis. This research proposes a Web-Based Decision Support System (WBDSS) driven by Fuzzy Logic (FL) for the diagnosis of TF. The system comprises of a Knowledge...

This paper is concerned with the defuzzification of the discretised generalised type-2 fuzzy set. In 2008 Liu proposed the α-Plane Representation — a decomposition of the generalised type-2 set into horizontal slices termed ‘α-planes’. An α-plane is akin to an interval type-2 fuzzy set. The α-Plane Representation must be used in conjunction with an interval defuzzification method: The three mai...