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Fault Detection and Isolation in Inertial Measurement Units Based on χ2-CUSUM and Wavelet Packet
Joint Authors
de Oliveira, Élcio Jeronimo
Milagre da Fonseca, Ijar
Kuga, Helio Koiti
Source
Mathematical Problems in Engineering
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-11-21
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
The aim of this paper is to present a fault detection algorithm (FDI) based on signal processing techniques developed for an inertial measurement unit (IMU) with minimal redundancy of fiber optic gyros.
In this work the recursive median filter is applied in order to remove impulses (outliers) arising from data acquisition process and parity vector operations, improving the fault detection and isolation performance.
The FDI algorithm is divided into two blocks: fault detection (FD) and fault isolation (FI).
The FD part of the algorithm is used to guarantee the reliability of the isolation part and is based on parity vector analysis using χ2-CUSUM algorithm.
The FI part is performed using parity space projection of the energy subbands obtained from wavelet packet decomposition.
This projection is an extension of clustering analysis based on singular value decomposition (SVD) and principal component analysis (PCA).
The results of the FD and FI algorithms have shown the effectiveness of the proposed method, in which the FD algorithm is capable of indicating the low-level step bias fault with short delay and a high index of correct decisions of the FI algorithm also with low-level step bias fault.
American Psychological Association (APA)
de Oliveira, Élcio Jeronimo& Milagre da Fonseca, Ijar& Kuga, Helio Koiti. 2013. Fault Detection and Isolation in Inertial Measurement Units Based on χ2-CUSUM and Wavelet Packet. Mathematical Problems in Engineering،Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-1011017
Modern Language Association (MLA)
de Oliveira, Élcio Jeronimo…[et al.]. Fault Detection and Isolation in Inertial Measurement Units Based on χ2-CUSUM and Wavelet Packet. Mathematical Problems in Engineering No. 2013 (2013), pp.1-10.
https://search.emarefa.net/detail/BIM-1011017
American Medical Association (AMA)
de Oliveira, Élcio Jeronimo& Milagre da Fonseca, Ijar& Kuga, Helio Koiti. Fault Detection and Isolation in Inertial Measurement Units Based on χ2-CUSUM and Wavelet Packet. Mathematical Problems in Engineering. 2013. Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-1011017
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1011017