Roberto Kawakami Harrop Galvão

A method for calibration and validation subset partitioning.

This paper proposes a new method to divide a pool of samples into calibration and validation subsets for multivariate modelling. The proposed method is of value for analytical applications involving… (More)

A Wavelet Band-Limiting Filter Approach for Fault Detection in Dynamic Systems

Henrique Mohallem Paiva, Roberto Kawakami Harrop Galvão, Takashi Yoneyama
IEEE Transactions on Systems, Man, and…
2008

This paper presents a wavelet-based analytical redundancy method for the detection of faults in dynamic systems. In the proposed approach, consistency checks are carried out after band-limiting the… (More)

Fractional Order Modeling of Large Three-Dimensional RC Networks

Roberto Kawakami Harrop Galvão, Sillas Hadjiloucas, Karl Heinz Kienitz, Henrique Mohallem Paiva, Rubens Junqueira Magalhães Afonso
IEEE Transactions on Circuits and Systems I…
2013

An incidence matrix analysis is used to model a three-dimensional network consisting of resistive and capacitive elements distributed across several interconnected layers. A systematic methodology… (More)

Model Predictive Control using Prognosis and Health Monitoring of actuators

Eduardo B. Pereira, Roberto Kawakami Harrop Galvão, Takashi Yoneyama
IEEE International Symposium on Industrial…
2010

In order to keep a plant running until the next scheduled maintenance, a Prognosis and Health Monitoring (PHM) system may provide valuable information that can be used to distribute the control… (More)

How to tell the good from the bad in failure prognostics methods

Bruno P. Leao, João Paulo Pordeus Gomes, Roberto Kawakami Harrop Galvão, Takashi Yoneyama
IEEE Aerospace Conference
2010

This paper describes a novel approach for evaluating the performance of failure prognostics solutions in the context of Prognostics and Health Management (PHM). The method is based on the use of… (More)

On the Space of Orthonormal Wavelets: Additional Constraints to Ensure Two Vanishing Moments

Henrique Mohallem Paiva, Marcelo Nascimento Martins, Roberto Kawakami Harrop Galvão, Juliana Pereira Paiva
IEEE Signal Processing Letters
2009

This letter extends the formulation developed by Sherlock and Monro for parameterization of orthonormal wavelet filter banks. Additional constraints are proposed to ensure that the resulting wavelets… (More)

Combining PHM information and system architecture to support aircraft maintenance planning

Felipe Augusto Sviaghin Ferri, Leonardo Ramos Rodrigues, João Paulo Pordeus Gomes, Ivo Paixao de Medeiros, Roberto Kawakami Harrop Galvão, Cairo L. Nascimento
IEEE International Systems Conference (SysCon)
2013

Aircraft are highly valuable assets and large budgets are spent in preventive and predictive maintenance programs. The application of PHM (Prognostics and Health Management) technologies can be a… (More)

A graphical user interface for variable selection employing the Successive Projections Algorithm

Neural and Wavelet Network Models for Financial Distress Classification

Victor M. Becerra, Roberto Kawakami Harrop Galvão, Magda Abou-Seada
Data Mining and Knowledge Discovery
2005

This work analyzes the use of linear discriminant models, multi-layer perceptron neural networks and wavelet networks for corporate financial distress prediction. Although simple and easy to… (More)

Optimal discrimination and classification of THz spectra in the wavelet domain.

Roberto Kawakami Harrop Galvão, Sillas Hadjiloucas, John W. Bowen, Clarimar José Coelho
Optics express
2003

In rapid scan Fourier transform spectrometry, we show that the noise in the wavelet coefficients resulting from the filter bank decomposition of the complex insertion loss function is linearly… (More)

Roberto Kawakami Harrop Galvão

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