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Identificação de cargas lineares e não-lineares em sistemas elétricos residenciais usando técnicas para seleção de atributos e redes neurais artificiais; Identification of harmonic current sources in single-phase power systems using feature selection techniques and artificial neural networks

FERNANDES, Ricardo A. S.; SILVA, Ivan N. da; OLESKOVICZ, Mário
Fonte: Sociedade Brasileira de Automática Publicador: Sociedade Brasileira de Automática
Tipo: Artigo de Revista Científica
POR
Relevância na Pesquisa
46.4%
Este trabalho consiste em apresentar um método para a identificação de cargas lineares e não-lineares comumente encontradas em sistemas elétricos residenciais. Desta identificação, soluções viáveis poderão ser aplicadas com o intuito de mitigar os níveis de emissão das correntes harmônicas geradas, advindas principalmente por cargas com características não-lineares. No desenvolvimento do método, utilizaram-se de técnicas para a seleção de atributos, de forma a minimizar a dificuldade em se identificar as cargas conectadas ao sistema. A etapa posterior de identificação foi realizada pela aplicação de redes neurais artificiais. Todas as situações de distorção harmônica foram geradas em laboratório por uma fonte de alimentação, onde em sua saída foram alocados analisadores de energia, responsáveis pela extração das medidas necessárias sobre as cargas residenciais em análise. Os resultados obtidos foram considerados satisfatórios, mostrando-se que a metodologia proposta pode ser também empregada pelas concessionárias de energia elétrica para que estas obtenham informações sobre o perfil das cargas instaladas em consumidores residenciais.; This work presents a method to identify linear and nonlinear loads commonly encountered in residential electrical systems. From this method...

Data Mining Applied to Harmonic Current Sources Identification in Residential Consumers

FERNANDES, R. A. S.; SILVA, I. N. da; OLESKOVICZ, M.
Fonte: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC Publicador: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Tipo: Artigo de Revista Científica
POR
Relevância na Pesquisa
46.36%
This work proposes a method based on both preprocessing and data mining with the objective of identify harmonic current sources in residential consumers. In addition, this methodology can also be applied to identify linear and nonlinear loads. It should be emphasized that the entire database was obtained through laboratory essays, i.e., real data were acquired from residential loads. Thus, the residential system created in laboratory was fed by a configurable power source and in its output were placed the loads and the power quality analyzers (all measurements were stored in a microcomputer). So, the data were submitted to pre-processing, which was based on attribute selection techniques in order to minimize the complexity in identifying the loads. A newer database was generated maintaining only the attributes selected, thus, Artificial Neural Networks were trained to realized the identification of loads. In order to validate the methodology proposed, the loads were fed both under ideal conditions (without harmonics), but also by harmonic voltages within limits pre-established. These limits are in accordance with IEEE Std. 519-1992 and PRODIST (procedures to delivery energy employed by Brazilian`s utilities). The results obtained seek to validate the methodology proposed and furnish a method that can serve as alternative to conventional methods.

Análise do comportamento dinâmico não-linear de estruturas sob excitação de suportes não-ideal.; Analysis of nonlinear dynamic behavior of structures under non-ideal support.

Silva, Henrique Furia
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 28/11/2011 PT
Relevância na Pesquisa
36%
Neste trabalho se estuda o comportamento dinâmico não linear de um pórtico plano submetido à excitação não ideal de suportes, sendo isto aplicável a estruturas civis dele derivadas. Neste sentido, um edifício pode ser considerado uma justaposição de pórticos. Modelos físicos simples aplicáveis a estruturas civis ou mecânicas com grau de dificuldade crescente são resolvidos individualmente com a utilização das equações diferenciais de Lagrange para determinar as equações do movimento do sistema. A análise qualitativa de cada problema permite determinar os valores que os parâmetros físicos podem assumir. Cada modelo simples fornece um conjunto de parâmetros, que vão sendo utilizados progressivamente nas integrações numéricas. Em sistemas com fonte de energia limitada, ocorre uma interação entre o movimento da estrutura e da fonte de energia; matematicamente é acrescentada uma equação diferencial acoplada adicional ao correspondente sistema livre de excitações. No caso de pórticos planos de grande esbelteza, as cargas axiais induzem grandes deslocamentos, sendo importante considerar na estrutura a não-linearidade geométrica. Neste caso, uma discretização da estrutura precisa ser feita para identificar os graus de liberdade do sistema. Nas análises dos problemas...

Modelagem do comportamento dinâmico não linear de risers pelo método dos elementos finitos.; Modeling the behavior of nonlinear dynamic risers by finite element method.

Prado, Fabio Selleio
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 25/03/2013 PT
Relevância na Pesquisa
36.18%
Mais recentemente a exploração offshore de petróleo e gás tem se intensificado na costa brasileira. Uma das características da exploração offshore no Brasil está ligada ao fato de os hidrocarbonetos se situarem a grandes profundidades no mar, frequentemente abaixo de uma espessa camada de sal, exigindo o desenvolvimento de novas tecnologias para vencer os desafios para sua prospecção e extração. A profundidade dos poços pode variar entre dois mil e sete mil metros abaixo da superfície do mar. Um dos grandes desafios é garantir uma boa conexão dos equipamentos de extração com a unidade de produção na superfície, o que se faz com risers. Há distintas configurações de risers, entre as quais os verticais, em catenária, lazy waves ou steep waves, sendo que o riser em catenária e o vertical, em particular, serão estudados aqui. Este trabalho visa a estudar os efeitos dinâmicos não lineares no riser, que, por ser extremamente esbelto, exige a consideração da não linearidade geométrica. Entre eles, destaca-se a possibilidade de ocorrência da ressonância paramétrica. Os carregamentos dinâmicos podem ser provenientes da movimentação da unidade flutuante, correntezas ou escoamento interno. Neste trabalho serão elaborados modelos em elementos finitos...

Neural Network-Based Approach for Identification of the Harmonic Content of a Nonlinear Load in a Single-Phase System

Nascimento, C. F.; Oliveira, A. A.; Goedtel, A.; Silva, I. N.; Serni, P. J. A.
Fonte: Institute of Electrical and Electronics Engineers (IEEE) Publicador: Institute of Electrical and Electronics Engineers (IEEE)
Tipo: Artigo de Revista Científica Formato: 65-73
POR
Relevância na Pesquisa
36.12%
In this paper an alternative method based on artificial neural networks is presented to determine harmonic components in the load current of a single-phase electric power system with nonlinear loads, whose parameters can vary so much in reason of the loads characteristic behaviors as because of the human intervention. The first six components in the load current are determined using the information contained in the time-varying waveforms. The effectiveness of this method is verified by using it in a single-phase active power filter with selective compensation of the current drained by an AC controller. The proposed method is compared with the fast Fourier transform.

Force and displacement transmissibility of a nonlinear isolator with high-static-low-dynamic-stiffness

Carrella, A.; Brennan, M. J.; Waters, T. P.; Lopes, V.
Fonte: Pergamon-Elsevier B.V. Ltd Publicador: Pergamon-Elsevier B.V. Ltd
Tipo: Artigo de Revista Científica Formato: 22-29
ENG
Relevância na Pesquisa
36.11%
Engineers often face the challenge of reducing the level of vibrations experienced by a given payload or those transmitted to the support structure to which a vibrating source is attached. In order to increase the range over which vibrations are isolated, soft mounts are often used in practice. The drawback of this approach is the static displacement may be too large for reasons of available space for example. Ideally, a vibration isolator should have a high-static stiffness, to withstand static loads without too large a displacement, and at the same time, a low dynamic stiffness so that the natural frequency of the system is as low as possible which will result in an increased isolation region. These two effects are mutually exclusive in linear isolators but can be overcome if properly configured nonlinear isolators are used. This paper is concerned with the characterisation of such a nonlinear isolator comprising three springs, two of which are configured to reduce the dynamic stiffness of the isolator. The dynamic behaviour of the isolator supporting a lumped mass is investigated using force and displacement transmissibility, which are derived by modelling the dynamic system as a single-degree-of-freedom system. This results in the system dynamics being approximately described by the Duffing equation. For a linear isolator...

Harmonic propagation analysis in electric energy distribution systems

Oliveira, L. C O; E Melo, G. A.; Souza, J. B.; Canesin, C. A.; Bonatto, B. D.; Belchior, F. N.; Oliveira, M.; Mertens, E. A.
Fonte: Universidade Estadual Paulista Publicador: Universidade Estadual Paulista
Tipo: Conferência ou Objeto de Conferência Formato: 528-533
ENG
Relevância na Pesquisa
46.4%
An important alteration of the equivalent loads profile has been observed in the electrical energy distribution systems, for the last years. Such fact is due to the significant increment of the electronic processors of electric energy that, in general, behave as nonlinear loads, generating harmonic distortions in the currents and voltages along the electric network. The effects of these nonlinear loads, even if they are concentrated in specific sections of the network, are present along the branch circuits, affecting the behavior of the entire electric network. For the evaluation of this phenomenon it is necessary the analysis of the harmonic currents flow and the understanding of the causes and effects of the consequent voltage harmonic distortions. The usual tools for calculation the harmonic flow consider one-line equivalent networks, balanced and symmetrical systems. Therefore, they are not tools appropriate for analysis of the operation and the influence/interaction of mitigation elements. In this context, this work proposes the development of a computational tool for the analysis of the three-phase harmonic propagation using Norton modified models and considering the real nature of unbalanced electric systems operation. © 2011 IEEE.

A Time-domain Harmonic Power-Flow Analysis in Electrical Energy Distribution Networks, Using Norton Models for Non-linear Loading

Canesin, C. A.; Oliveira, L. C. O. de; Souza, J. B.; Lima, D. de O. de; Buratti, R. P.; IEEE
Fonte: Ieee Publicador: Ieee
Tipo: Conferência ou Objeto de Conferência Formato: 778-782
ENG
Relevância na Pesquisa
36.08%
The purpose of this paper is to present the application of a three-phase harmonic propagation analysis time-domain tool, using the Norton model to approach the modeling of non-linear loads, making the harmonics currents flow more appropriate to the operation analysis and to the influence of mitigation elements analysis. This software makes it possible to obtain results closer to the real distribution network, considering voltages unbalances, currents imbalances and the application of mitigation elements for harmonic distortions. In this scenario, a real case study with network data and equipments connected to the network will be presented, as well as the modeling of non-linear loads based on real data obtained from some PCCs (Points of Common Coupling) of interests for a distribution company.

Application of iteration perturbation method and Hamiltonian approach for nonlinear vibration of Euler-Bernoulli beams

Ahmadi,Morteza; Hashemi,Gholamreza; Asghari,Ali
Fonte: Associação Brasileira de Ciências Mecânicas Publicador: Associação Brasileira de Ciências Mecânicas
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/11/2014 EN
Relevância na Pesquisa
36.07%
This paper is devoted to the new classes of analytical techniques called the Iteration Perturbation Method (IPM)and Hamiltonian Approach(HA) for solving the equation of motion governing the nonlinear vibration of Euler-Bernoulli beams subjected to the axial loads. It has been found that theIPMand HAare very prolific, rapid, functional and do not demand small perturbation and are also sufficiently accurate to both linear and nonlinear problems in engineering. Comparison of the results of these methods with together and with the results of numerical solution reveals that the IPM and HA are very effective and convenient, and can be easily extended to other nonlinear systems so that can be found widely applicable in engineering and other sciences.

Constructal design of perforated steel plates subject to linear elastic and nonlinear elastoplastic buckling

Helbig, Daniel; Real, Mauro de Vasconcellos; Correia, Anderson Luis Garcia; Santos, Elizaldo Domingues dos; Isoldi, Liércio André
Fonte: Universidade Federal do Rio Grande Publicador: Universidade Federal do Rio Grande
Tipo: Conferência ou Objeto de Conferência
ENG
Relevância na Pesquisa
36%
Steel plates are used in a great variety of engineering applications, such as deck and bottom of ship structures, and platforms of offshore structures. Cutouts are often provided in plate elements for inspection, maintenance, and service purposes. So, the design of shape and size of these holes is significant. Usually these plates are subjected to axial compressive forces which make them prone to instability or buckling. If the plate is slender, the buckling is elastic. However, if the plate is sturdy, it buckles in the plastic range causing the so-called inelastic (or elasto-plastic) buckling.Therefore, the goal of this work is to obtain the optimal geometry which maximizes the buckling load for steel plates with a centered elliptical perforation when subjected to linear and nonlinear buckling phenomenon by means of Constructal Design. To do so, numerical models were developed in ANSYS software to evaluate the elastic and elasto-plastic buckling loads of simply supported and uniaxially loaded rectangular plates with elliptical cutouts. The results indicated that the optimal shapes were obtained in accordance with the Constructal Principle of "Optimal Distribution of Imperfections", showing that the Constructal Design method can be satisfactorily employed in mechanic of materials problems.

Avaliação de desempenho de medidores monofásicos de energia elétrica dos tipos eletromecânico operando com cargas não-lineares; Performance evaluation of single-phase electricity meters types of electromechanical operating with non-linear loads

PINHEIRO NETO, Daywes
Fonte: Universidade Federal de Goiás; BR; UFG; Mestrado em Engenharia Elétrica e de Computação; Engenharia Publicador: Universidade Federal de Goiás; BR; UFG; Mestrado em Engenharia Elétrica e de Computação; Engenharia
Tipo: Dissertação Formato: application/pdf
POR
Relevância na Pesquisa
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This work analyzes the performance of single-phase and three-phase power meters, of the electromechanical and electronic types, when they are working with linear and nonlinear loads present in residence, commerce and industry. It differs from related studies mainly for making use of actual loads encountered in day-to-day, rather than sources of electronic charges as has been observed in another papers. The comparison of results is made taking as standard a meter power of high precision developed through virtual instrumentation; O presente trabalho analisa o comportamento de medidores monofásicos e trifásicos de energia elétrica dos tipos eletromecânico e eletrônico, quando os mesmos são submetidos a ambientes de cargas lineares e não-lineares, dos tipos residencial, comercial e industrial. Diferencia-se dos estudos correlatos principalmente por fazer uso de cargas reais encontradas no dia-a-dia, em vez de fontes de cargas eletrônicas como se tem observado no estado da arte. A comparação de resultados é feita tomando como base um padrão de energia de alta precisão desenvolvido por meio de instrumentação virtual

Efeito da geometria e do material nas vibrações não lineares de cascas cilíndricas ortotrópicas; Effect of geometry and material on the nonlinear vibrations of orthotropic cylindrical shells

Argenta, Ana Larissa Dal Piva
Fonte: Universidade Federal de Goiás; Brasil; UFG; Programa de Pós-graduação em Ciências da Saúde (FM); Faculdade de Medicina - FM (RG) Publicador: Universidade Federal de Goiás; Brasil; UFG; Programa de Pós-graduação em Ciências da Saúde (FM); Faculdade de Medicina - FM (RG)
Tipo: Dissertação Formato: application/pdf
POR
Relevância na Pesquisa
36.37%
Circular cylindrical shells are widely used structures in several engineering areas and have great capacity to withstand both axial and lateral loads. However, they may present a complex dynamic behavior. Thus, a detailed study of the behavior of cylindrical shells subjected to different loading and support conditions as well as the influence of material characteristics and geometric relations evaluation is justified. In this work the influence of geometry and orthotropy on the nonlinear dynamic behavior of orthotropic simply supported cylindrical shells subjected to both axial and lateral time depending loads is studied. To model the shell, the Donnell nonlinear shallow shell theory, neglecting the effects of shear deformations, is used. It is considered the shell in three different situations: empty, filled with static fluid and subjected to internal flow of incompressible and non-viscous fluid, whose motion is isentropic and irrotational. The radial displacements are described as an expansion with eight degrees of freedom which satisfies the boundary conditions. The Galerkin method is applied to obtain a set of nonlinear equations of motion, which are in turn solved by the Runge-Kutta method. A detailed analysis is performed to study the influence of material orthotropy and geometric relations such as length-radio (L/R) and radio-thickness (R/h) on the natural frequencies...

AEROELASTICITY OF SUSPENSION BRIDGES USING NONLINEAR AERODYNAMICS AND GEOMETRICALLY EXACT STRUCTURAL MODELS

ARENA, ANDREA
Fonte: La Sapienza Universidade de Roma Publicador: La Sapienza Universidade de Roma
Tipo: Tese de Doutorado
EN
Relevância na Pesquisa
36.13%
Wind-induced vibration in super-long-span bridges is a major concern for the designers. There is a need to enhance the structural design technology, through improved computational capabilities, a critical step for a better understanding of fluid-flow physics that induce vibration and fluid- structure dynamics of flexible bridges. The design of bridges with spans significantly longer than those existing today is quite challenging. To refine the computational tools required for such bridges, a multi- disciplinary research effort devoted to the advanced modeling of flexible long-span suspension bridges is proposed. These structures exhibit an aeroelastic behavior quite different from conventional bridges. In the present work, a fully nonlinear model of suspension bridges parameterized by one single space coordinate is proposed to describe the overall three-dimensional motion. The nonlinear equations of motion are obtained via a direct Lagrangian formulation and the kinematics, for the deck-girder and the suspension cables, feature the finite displacements of the associated base lines and the flexural and torsional finite rotations of the deck cross sections. The strain-displacement relationships for the generalized strain parameters - the cable elongations...

Vibrações ressonantes não-lineares em estruturas tipo viga sob excitação paramétrica e combinada; Nonlinear resonance vibrations in beam type structures under parametric and combined excitations

Silva, Demian Gomes da
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 28/04/2006 PT
Relevância na Pesquisa
36.09%
Desenvolve uma pesquisa em dinâmica estrutural não-linear com enfoque teórico e experimental direcionada para uma importante classe de estruturas flexíveis. É motivada pelos novos requerimentos das indústrias em termos de inovações, das agências certificadoras em termos de segurança e conforto e, por restrições relativas ao meio ambiente cada vez mais severas. Como conseqüência, o cenário atual e os desafios da engenharia moderna são bem diferentes daqueles encontrados antigamente. Atualmente as estruturas são mais flexíveis e operam sob condições cada vez mais severas. O aumento da flexibilidade torna as não-linearidades mais ativas e, juntamente com a ação de diferentes formas de excitação, produzem um cenário dinâmico complexo. Neste cenário, diversos fenômenos dinâmicos intrinsicamente não-lineares podem se desenvolver e conseqüêntemente comprometer a integridade estrutural, prejudicar a operação e incrementar os problemas de ruído. Tais fenômenos são altamente perigosos, principalmente por não serem previstos e nem ao menos conhecidos pela teoria dinâmica linear. Dentre estes fenômenos, a pesquisa se propõe a abordar dois: vibrações ressonantes paramétricas e autoparamétricas. Especificamente...

Modeling and control of thermostatically controlled loads

Kundu, Soumya; Sinitsyn, Nikolai; Backhaus, Scott; Hiskens, Ian
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 11/01/2011
Relevância na Pesquisa
36.08%
As the penetration of intermittent energy sources grows substantially, loads will be required to play an increasingly important role in compensating the fast time-scale fluctuations in generated power. Recent numerical modeling of thermostatically controlled loads (TCLs) has demonstrated that such load following is feasible, but analytical models that satisfactorily quantify the aggregate power consumption of a group of TCLs are desired to enable controller design. We develop such a model for the aggregate power response of a homogeneous population of TCLs to uniform variation of all TCL setpoints. A linearized model of the response is derived, and a linear quadratic regulator (LQR) has been designed. Using the TCL setpoint as the control input, the LQR enables aggregate power to track reference signals that exhibit step, ramp and sinusoidal variations. Although much of the work assumes a homogeneous population of TCLs with deterministic dynamics, we also propose a method for probing the dynamics of systems where load characteristics are not well known.

On the importance of nonlinear modeling in computer performance prediction

Garland, Joshua; Bradley, Elizabeth
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Relevância na Pesquisa
36.04%
Computers are nonlinear dynamical systems that exhibit complex and sometimes even chaotic behavior. The models used in the computer systems community, however, are linear. This paper is an exploration of that disconnect: when linear models are adequate for predicting computer performance and when they are not. Specifically, we build linear and nonlinear models of the processor load of an Intel i7-based computer as it executes a range of different programs. We then use those models to predict the processor loads forward in time and compare those forecasts to the true continuations of the time series; Comment: Appeared in "Proceedings of the 12th International Symposium on Intelligent Data Analysis"

Safe Protocol for Controlling Power Consumption by a Heterogeneous Population of Loads

Kundu, Soumya; Sinitsyn, Nikolai
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 04/07/2012
Relevância na Pesquisa
35.99%
Recent studies on control of aggregate power of an ensemble of thermostatically-controlled-loads (TCLs) have been concentrated on shifting the temperature set points of each TCL in the population. A sudden shift in the set point, however, is known to be associated with undesirable power oscillations which require closed-loop control strategies to regulate the aggregate power consumption of the population. In this article, we propose a new approach which we term as a "safe protocol" to implement the shift in temperature set point. It is shown analytically and verified numerically that by shifting the set point "safely" the aggregate power consumption can be changed to a different value within a time frame of the order of a TCL's cycle duration and avoid the undesired oscillations seen otherwise in a "sudden" shift. We discuss how the excess aggregate energy transferred under a safe shift in the set point could potentially mitigate the burden due to abnormal energy generation within a short time span.; Comment: 6 pages; American Control Conference, Montreal, 2012

Modeling Uncertainties in Aggregated Thermostatically Controlled Loads Using a State Queueing Model

Lu, Ning; Chassin, David P.; Widergren, Steve E.
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 19/09/2004
Relevância na Pesquisa
36.12%
To study the impacts of price responsive demand on the electric power system requires better load models. This paper discusses the modeling of uncertainties in aggregated thermostatically controlled loads using a state queueing (SQ) model. The cycling times of thermostatically controlled appliances (TCAs) vary with the TCA types and sizes, as well as the ambient temperatures. The random consumption of consumers, which shortens or prolongs a specific TCA cycling period, introduces another degree of uncertainty. By modifying the state transition matrix, these random factors can be taken into account in a discrete SQ model. The impacts of considering load diversity in the SQ model while simulating TCA setpoint response are also studied.; Comment: 9 pages, 19 figures, accepted to IEEE Transactions on Power Systems

A fuzzy number based methodology for harmonic load-flow calculation, considering uncertainties

Romero,A. A.; Zini,H .C.; Ratta,G.; Dib,R.
Fonte: Latin American applied research Publicador: Latin American applied research
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/07/2008 EN
Relevância na Pesquisa
36.18%
Nonlinear devices are being increasingly used in power systems and, as a consequence, harmonic distortion is a continuously growing phenomenon. Since linear and nonlinear loads are usually uncertain variables that, in addition, vary constantly, probabilistic methods for harmonic load-flow calculation have been developed to quantify the resulting random harmonic voltages. More recently, a possibilistic harmonic load-flow based on fuzzy sets theory has been proposed with the same objective. Although the possibilistic approach seems better suited to deal with the kind of uncertainty usually found in practice, the Classic Fuzzy Solution on which this methodology relies exhibits some drawbacks. This paper proposes a possibilistic harmonic load-flow based on the Marginal Joint Solution, which overcomes two major limitations of the Classic Fuzzy Solution approach: the lack of fuzzy linear loads models, and the over-and underestimation of the harmonic voltages.

Intelligent Positioning Fuzzy Servomechanism Under PWM Nonlinear Loads

Rangel,D.; Rivera,A. L.; Alaníz,P.D.; Castañeda,R.; Castaño,V.M.
Fonte: UNAM, Centro de Ciencias Aplicadas y Desarrollo Tecnológico Publicador: UNAM, Centro de Ciencias Aplicadas y Desarrollo Tecnológico
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/04/2010 EN
Relevância na Pesquisa
56.22%
An experimental intelligent angular positioning fuzzy servomechanism excited by a nonlinear load based on a mechanical transient Pulse Width Modulation (PWM) is developed. This fuzzy positioning system is capable of reaching the angular position with high precision even when the response is affected by the application of different PWM nonlinear loads.