This paper presents an improved Direct Torque Control (DTC) based on fuzzy logic technique. The major problem that is usually associated with DTC drive is the high torque ripple. To overcome this problem a torque hysteresis band with variable amplitude is proposed based on fuzzy logic. The fuzzy proposed controller is shown to be able to reducing the torque and flux ripples and to improve perfo...

1. Data collection and data dissemination although on two different ends of the statistical data production influences each other. For respondents it might not be easy and straightforward to query and find relevant data in the statistical databases on the (National Statistical Institutes) NSIs’ websites (Bavdaž et al, 2011). As a consequence motivation to cooperate in surveys might decreases an...

M. Rietmann,1,* R. Carretero-González,1 and R. Chacón2 1Nonlinear Dynamical Systems Group,† and Computational Science Research Center and Department of Mathematics and Statistics, San Diego State University, San Diego, California 92182-7720, USA 2Departamento de Fı́sica Aplicada, Escuela de Ingenierı́as Industriales, Universidad de Extremadura, Apartado Postal 382, E-06006 Badajoz, Spain (Receive...

In this paper, simulation results using MATLAB / SIMULINK of conventional and fuzzy type both power system stabilizers are shown. The performance of the proposed model is tested and performed on Single Machine Infinite Bus System (SMIB). By using different K constant, the performance of SMIB system with proposed model has been analyzed under different system condition i.e. SMIB with excitation ...

A novel technique, the visual-area coding technique (VACT), for the optical implementation of fuzzy logic with the capability of visualization of the results is presented. This technique is based on the microfont method and is considered to be an instance of digitized analog optical computing. Huge amounts of data an be processed in fuzzy logic with the VACT. In addition, real-time visualizatio...

A determinação sonovoltamétrica do 4-nitrofenol foi estudada sobre um eletrodo de diamante dopado com boro. Foram observadas melhorias significativas na sensibilidade analítica devido à limpeza da superfície eletródica e ao aumento no transporte de espécies ao eletrodo proporcionados pelo ultra-som. Desta maneira, para os processos de oxidação e redução, os limites de detecção diminuíram de 11....

Intensive care is a complex environment involving many signals, data and observations. Clinical decision support and artificial intelligence using fuzzy logic and closed loop techniques are methods that might help us to handle this complexity in a safe, effective and efficient way. Merouani and colleagues have performed a study using fuzzy logic and closed loop techniques to more effectively we...

In this paper we prove strong completeness of axiomatic extensions of First Order SMTL logic adding the so-called quasi-witnessed axioms with respect to quasi-witnessed Models. In order to achieve this result, we make use of methods that are typical of Classical Predicate Logic, and have been later generalized by P. Hájek to cope with Predicate Fuzzy Logic. At the end of the paper, we obtain, a...

Nursing diagnoses associated with alterations of urinary elimination require different interventions. Nurses, who are not specialists, require support to diagnose and manage patients with disturbances of urine elimination. The aim of this study was to present a model based on fuzzy logic for differential diagnosis of alterations in urinary elimination, considering nursing diagnosis approved by ...