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Your search keyword '"Reinaldo M. Palhares"' showing total 277 results
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277 results on '"Reinaldo M. Palhares"'

1. Sim3Tanks: A Benchmark Model Simulator for Process Control and Monitoring

Author

Arllem O. Farias, Gabriel Alisson C. Queiroz, Iury V. Bessa, Renan Landau P. Medeiros, Lucas C. Cordeiro, and Reinaldo M. Palhares

Subjects
Virtual laboratory, three-tank system, fault detection and isolation, fault tolerant control, Electrical engineering. Electronics. Nuclear engineering, TK1-9971
Abstract

This paper describes a simulator for the three-tank system process named Sim3Tanks. This process presents a hybrid and nonlinear behavior and it is subject to different kinds of perturbations, faults, and noises. Sim3Tanks was developed in the MATLAB/Simulink environment and can be used via graphical user interface, Simulink block diagram, and command-line. Sim3Tanks is suitable for studying and developing process control, fault detection and isolation, and fault tolerant control strategies for nonlinear multi-variable systems. In order to illustrate the potential of Sim3Tanks, four scenarios are discussed throughout this paper: PID control strategies for the level and flow rates; a fault detection algorithm based on unscented Kalman filter and generalized likelihood ratio; a fault isolation system based on Bayesian networks; and a control reconfiguration based on static virtual actuator and sensor. A video demonstration of Sim3Tanks can be found at https://github.com/e-controls/Sim3Tanks.

Published
2018
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2. A New Scheme for Fault Detection and Classification Applied to DC Motor

Author

Laércio I. Santos, Reinaldo M. Palhares, Marcos F. S. V. D'Angelo, João B. Mendes, Renê R. Veloso, and Petr Y. Ekel

Subjects
Mathematics, QA1-939
Abstract

This study presents an approach for fault detection and classification in a DC drive system. The fault is detected by a classical Luenberger observer. After the fault detection, the fault classification is started. The fault classification, the main contribution of this paper, is based on a representation which combines the Subctrative Clustering algorithm with an adaptation of Particle Swarm Clustering.

Published
2018
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3. A Combined Method for Segmentation and Registration for an Advanced and Progressive Evaluation of Thermal Images

Author

Emilio Z. Barcelos, Walmir M. Caminhas, Eraldo Ribeiro, Eduardo M. Pimenta, and Reinaldo M. Palhares

Subjects
thermography, image segmentation, image registration, sports medicine, Chemical technology, TP1-1185
Abstract

In this paper, a method that combines image analysis techniques, such as segmentation and registration, is proposed for an advanced and progressive evaluation of thermograms. The method is applied for the prevention of muscle injury in high-performance athletes, in collaboration with a Brazilian professional soccer club. The goal is to produce information on spatio-temporal variations of thermograms favoring the investigation of the athletes’ conditions along the competition. The proposed method improves on current practice by providing a means for automatically detecting adaptive body-shaped regions of interest, instead of the manual selection of simple shapes. Specifically, our approach combines the optimization features in Otsu’s method with a correction factor and post-processing techniques, enhancing thermal-image segmentation when compared to other methods. Additional contributions resulting from the combination of the segmentation and registration steps of our approach are the progressive analyses of thermograms in a unique spatial coordinate system and the accurate extraction of measurements and isotherms.

Published
2014
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35. Event‐triggered control of quasi‐LPV systems with communication delays

Author

Pedro H. S. Coutinho, Luciano G. Moreira, and Reinaldo M. Palhares

Subjects
Control and Systems Engineering, Mechanical Engineering, General Chemical Engineering, Biomedical Engineering, Aerospace Engineering, Electrical and Electronic Engineering, Industrial and Manufacturing Engineering
Published
2022

40. Event‐triggered control of Takagi‐Sugeno fuzzy systems under deception attacks

Author

Márcia L. C. Peixoto, Pedro H. S. Coutinho, Iury Bessa, Paulo S. P. Pessim, and Reinaldo M. Palhares

Subjects
Control and Systems Engineering, Mechanical Engineering, General Chemical Engineering, Biomedical Engineering, Aerospace Engineering, Electrical and Electronic Engineering, Industrial and Manufacturing Engineering
Published
2023

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