Identification Method of Shaft Orbit in Rotating Machines Based on Accurate Fourier Height Functions Descriptors
Joint Authors
Sun, Guodong
Wu, Bo
Feng, Songlin
Xu, Liang
Ai, Chenghan
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-10-23
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
In this paper, an algorithm based on two novel shape descriptors and support vector machine (SVM) is proposed to improve the recognition accuracy and speed of shaft orbits of rotating machines.
Firstly, two novel shape descriptors, respectively, named accurate Fourier height functions 1 (AFHF1) and accurate Fourier height functions 2 (AFHF2) are presented based on height function (HF) and Fourier transformation.
Both AFHF1 and AFHF2 shape descriptors are constant to similarity transforms and also have intrinsic invariance to the starting point change and are more compacted than HF.
Therefore, they perform well on the global or local features of the contours of shaft orbits.
Then, the AFHF1 and AFHF2 shape descriptors are utilized to extract features of shaft orbits in the simulated dataset and measured dataset.
Taking extracted feature vectors as the input, SVM is adopted in order to classify the fault types according to the shapes of shaft orbits.
Finally, a series of descriptors including shape context (SC), inner-distance shape context (IDSC), triangular centroid distances (TCDs), and HF were compared to verify the performance of the proposed AFHF1 and AFHF2 shape descriptors.
The average accuracy of our method in simulated dataset and measured dataset are all higher than 99.83%, the average recognition time of each sample is no more than 19 milliseconds.
The experiments demonstrate that the proposed method has the best recognition accuracy and real-time and antinoise performance.
American Psychological Association (APA)
Wu, Bo& Feng, Songlin& Sun, Guodong& Xu, Liang& Ai, Chenghan. 2018. Identification Method of Shaft Orbit in Rotating Machines Based on Accurate Fourier Height Functions Descriptors. Shock and Vibration،Vol. 2018, no. 2018, pp.1-10.
https://search.emarefa.net/detail/BIM-1215202
Modern Language Association (MLA)
Wu, Bo…[et al.]. Identification Method of Shaft Orbit in Rotating Machines Based on Accurate Fourier Height Functions Descriptors. Shock and Vibration No. 2018 (2018), pp.1-10.
https://search.emarefa.net/detail/BIM-1215202
American Medical Association (AMA)
Wu, Bo& Feng, Songlin& Sun, Guodong& Xu, Liang& Ai, Chenghan. Identification Method of Shaft Orbit in Rotating Machines Based on Accurate Fourier Height Functions Descriptors. Shock and Vibration. 2018. Vol. 2018, no. 2018, pp.1-10.
https://search.emarefa.net/detail/BIM-1215202
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1215202