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9th Brazilian Symposium on Neural Networks, SBRN'06

作者： Medeiros, Anderson V. Amaral, Wagner C. Campello, Ricardo J. G. B. State University of Campinas School of Electrical and Computer Engineering Campinas SP 13083-970 Brazil Catholic University of Santos Graduate Program in Computer Science Santos SP 11070-906 Brazil

ISBN: (纸本)0769526802

OBF (Orthonormal Basis Function) Fuzzy models have shown to be a promising approach to the areas of nonlinear system identification and control since they exhibit several advantages over those dynamic model topologies usually adopted in the literature. Although encouraging application results have been obtained, no automatic procedure had yet been developed to optimize the design parameters of these models. This paper elaborates on the use of a genetic algorithm (GA) especially designed for this task, in which a fitness function based on the Akaike information criterion plays a key role by considering both model accuracy and parsimony aspects. The use of linear (actually affine) and nonlinear local models is also investigated. The proposed methodology is evaluated in the modeling of a real nonlinear magnetic levitation system. © 2006 IEEE.

关键词： Fuzzy sets

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The Deep Learning Approach For American Sign Language Detection

The Deep Learning Approach For American Sign Language Detect...

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2022 IEEE Creative Communication and Innovative Technology, ICCIT 2022

作者： Pangestu, Gusti Heryadi, Yaya Lukas Suparta, Wayan Arifin, Yulyani Bina Nusantara University School of Computer Science Computer Science Department Binus Graduate Program Computer Science Computer Science Department Jakarta Indonesia Bina Nusantara University Binus Graduate Program Computer Science Computer Science Department Jakarta11480 Indonesia Faculty of Engineering Jakarta12930 Indonesia Institut Teknologi Nasional Yogyakarta Faculty of Industrial Technology Department of Electrical Engineering Yogyakarta55281 Indonesia

ISBN: (纸本)9781665468763

Sign language has importance rule to deal with communication process especially with impairments hearing people. Sign language detection also attract lot of researchers to join the challenge of research to detect and recognize the sign language in the field of computer Science. Hence, there is still no any standard approach and method to recognize the meaning in every pose of sign language. This research proposed a mechanism to detect Alphabet American Sign Language by utilizing Convolutional Neural Network (CNN) process. The CNN approach was chosen based on the ability and capability to recognize image. In this research, MNIST dataset is used for traning and testing process. The proposed CNN architecture produced 97% of accuracy that outperform the previous research using the same dataset which made this architecture promising. © 2022 IEEE.

关键词： Convolutional neural networks

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Objective Sleep Quality Measurement based on Fuzzy Logic and Wearable Device 8

Objective Sleep Quality Measurement based on Fuzzy Logic and...

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8th International Conference on computer Science and Computational Intelligence, ICCSCI 2023

作者： Wijaya, Jason A. Andersen, Pauw D. Surantha, Nico Computer Science Department BINUS Graduate Program - Master of Computer Science Bina Nusantara University Jakarta11480 Indonesia Department of Electrical Electronic and Communication Engineering Tokyo City University Japan

Sleep is the natural state of relaxation for human being. Sleep quality is an essential yet frequently neglected aspect of sleep in general. Sleep quality is essential because it allows the body to restore itself and prepare for the next day. The standard method for evaluating sleep quality was subjective evaluation. Actigraphy devices, which can measure the sleep cycle, are now widely available. This study developed a method using Fuzzy Logic and an actigraphy device to measure and classify sleep quality. The fuzzy logic method was developed in several stages, which are determining the sleep quality measurement parameters, constructing the fuzzy set for each input variable, and developing the fuzzy rules. To evaluate the proposed fuzzy model, five individuals were invited to participate in the experiment and required to complete the PSQI subjective sleep questionnaire. The evaluation result shows that our proposed Fuzzy model achieves lower error compared to the existing method. © 2023 The Authors. Published by Elsevier B.V.

关键词： actigraphy artificial intelligences fuzzy logic sleep sleep quality

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Controller design to regulate the DC voltage of a VSC converter

Controller design to regulate the DC voltage of a VSC conver...

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2009 IEEE electrical Power and Energy Conference, EPEC 2009

作者： Hidalgo Mora, Carlos A. Diaz, Nelson L. Universidad Distrital F.J.C. Bogota Colombia Department of Electrical and Computer Engineering Graduate Program in Engineering - Industrial Automation Universidad Nacional de Colombia Bogota Colombia

ISBN: (纸本)9781424445080

The basic function of VSCs is to convert the DC voltage stored in a capacitor into AC voltages or AC voltages into DC voltage. One of the advantages of the VSC is that this kind of electronic converters allow to control the active and reactive power flow with an ac-grid independently. This paper presents a short analysis of the characteristics and dynamic of VSC-HVDC, identification techniques to find transfer function to DC Voltage and Reactive Power in a rectifier station are explored, and finally controller design to regulate the DC voltage is exposed and tested by simulations using Matlab Simulink and its toolbox SimpowerSystems. ©2009 IEEE.

关键词： Reactive power

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Hybrid Beam Forming with Data Logging Scheduling(DLS) for wireless sensor network(WSN)

Hybrid Beam Forming with Data Logging Scheduling(DLS) for wi...

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2017 IEEE International Conference on Applied System Innovation, ICASI 2017

作者： Renu, Sakthidasan Yen, Lei Belay, Abebe Lin, Hsin-Piao Jeng, Shiann-Shiun Department of International Graduate Program in Electrical Engineering and Computer Science National Taipei University of Technology Taiwan Department of Electronic Engineering National Taipei University of Technology Taiwan Department of Electrical Engineering National Dong Hwa University Taipei Taiwan

ISBN: (纸本)9781509048977

Improve of the overall network efficiency between source and destination relay selection and interference free communication is important criteria in WSN. In this paper we are proposing SON based algorithm capable of simultaneous Scheduling and Routing in WSN. The proposes scheme contains the three stages, in first stage the sensor nodes are classified into different clusters and each nodes having different weight based on distance from base station. In second stage the IRSS (Improvised Received Signal Strength) based scheme used select Routing path based on the Node weight, Residual Energy and Probability of Link Loss values of Relay Sensors. On the other side the channel estimation algorithm executed simultaneously with previous two stages. In final we are implementing the Data Logging based Scheduling and Routing scheme (DLSR) for WSN with Energy and Maximized Throughput. We are applying path recovery algorithm in presence of Void path or node failures. The proposed scheme additionally will form the virtual relay path to make communication with nearly zero loss. © 2017 IEEE.

关键词： Scheduling

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Mandatory and discretionary policies for CORBA security

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Journal of Network and Systems Management 2005年第3期13卷 309-328页

作者： Westphall, Carla Merkle Da Silva Fraga, Joni Caixa Postal 476 88040-970 Florianópolis SC Brazil Department of Automation and Systems Post-Graduate Program in Electrical Engineering Federal University of Santa Catarina Florianópolis SC Brazil Rua Capitão Américo CEP 88037-060 Florianopolis SC Brazil

This paper proposes extending the CORBA (Common Object Request Broker Architecture) security model to make possible the use of mandatory policies and policy management in distributed applications. Mandatory policies and a policy service were proposed for insertion in the JaCoWeb Project, which is developing an authorization scheme for large-scale networks based on CORBA security standards. In this paper, there is a combination of client-side and server-side access control, in a single domain. Our mandatory control is carried out on the level of ORB (Object Request Broker), on the client side, preventing, in unauthorized accesses, the emission of the corresponding requisition, the associated processing on the server and also, the generation of new requests through this unauthorized processing. In this paper, operations of security management not currently included in the OMG standards are also proposed. The paper further presents implementation results and an evaluation of these results based on common criteria. © 2005 Springer Science+Business Media, Inc.

关键词： Security of data

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An IMC decentralized PID controller retuning method based on frequency domain data

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IFAC-PapersOnLine 2024年第7期58卷 334-339页

作者： Egydio T.G. Ramos George Acioli Péricles R. Barros Post-Graduate Program in Electral Engineering Electrical Engineering Department Federal University of Campina Grande Brazil Electrical Engineering Department Federal University of Campina Grande Brazil

In this work, a method is proposed for retuning decentralized proportional-integral-derivative controllers. It consists in applying the internal model control approach in order to ft the closed-loop frequency response to that of a desired reference model. Then, an optimization problem is solved to adjust the increments on the controller parameters in order to meet the closed-loop requirements. To guarantee stability and robustness, linear margin constraints are applied to each loop, using the concept of effective loop transfer functions to take the coupling into account. The procedure is validated through simulations studies, by comparing it with other decentralized and centralized tuning methods.

关键词： Decentralized control PID control internal model control

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Closed-loop Frequency Data-driven PID Retuning 2

Closed-loop Frequency Data-driven PID Retuning

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2nd IEEE Conference on Control Technology and Applications, CCTA 2018

作者： Da Silva Moreira, Lucas José Acioli, George Barros, Péricles Rezende Post-Graduate Program in Electrical Engineering PPgEE COPELE Federal University of Campina Grande UFCG Campina Grande PB58429-900 Brazil Electrical Engineering Department DEE Federal University of Campina Grande UFCG Campina Grande PB58429-900 Brazil

ISBN: (纸本)9781538676981

This paper is about a data-driven frequency domain PID retuning from the initial controller parameters. It uses data collected from a specific closed-loop experiment to estimate frequency response points. The data-driven retuning method is applied to make a process matches with the defined reference model using a convex optimization technique that minimizes modified cost function. The proposed strategy is demonstrated in laboratory scale thermal plant based on Peltier effect, using crossover and critical frequencies estimations. © 2018 IEEE.

关键词： Frequency estimation

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Low-power energy generation systems for two-phase PM machine with reduced-switch-count controlled switches 7

Low-power energy generation systems for two-phase PM machine...

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7th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2015

作者： Bahia, Filipe A. Da C. Jacobina, Cursino B. Rocha, Nady Da Silva, Italo Roger F. M. P. Salvadori, Fabiano Post-Graduate Program in Electrical Engineering PPgEE COPELE UFCG Brazil Department of Electrical Engineering Federal University of Campina Grande UFCG Campina Grande Paraíba Brazil Department of Engineering Federal University of the Paraíba UFPB João Pessoa Paraíba Brazil

ISBN: (纸本)9781467371506

This paper presents two power generation systems with a two-phase permanent magnet (PM) synchronous machine associated to a rectifier with small number of controlled switches. The topologies have as main purpose converting wind energy into electrical energy for low power applications, providing a great potential to be used in urban areas. They can be used in applications connected to the grid or in the stand-alone mode or feeding a micro grid. Compared with two three-phase generation systems that use reduced number of controlled switches, the proposed topologies permit obtaining sinusoidal machine currents, with low harmonic distortion, using a smaller number of controlled switches. Simulation and experimental results also are presented. © 2015 IEEE.

关键词： Topology

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Modeling of communications in the safety assessment of nuclear power plants

Modeling of communications in the safety assessment of nucle...

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2008 Winter Meeting and Nuclear Technology Expo: Nuclear Power-Ready, Steady, Go

作者： Mandelli, D. Kirschenbaum, J. Mangan, L.A. Ekici, E. Aldemir, T. Nuclear Engineering Graduate Program Ohio State University Columbus OH 43210 Department of Computer Science and Engineering Ohio State University Columbus OH 43210 Department of Electrical and Computer Engineering Ohio State University Columbus OH 43210

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