Proceedings of the 2014 International Conference on Mechatronics, Control and Electronic Engineering

A Probability Box Modeling Method of Dimensionless Mechanical Fault Features in Time Domain

Authors
Yi Du, Jiaman Ding, An Liu
Corresponding Author
Yi Du
Available Online March 2014.
DOI
https://doi.org/10.2991/mce-14.2014.112How to use a DOI?
Keywords
Probability box theory; modeling; Uncertainty; Mechanical Fault; fault feature
Abstract
The simply multi-segment averages of mechanical fault features lead to the loss of signal uncertainty probability statistics which may contribute to fault diagnosis. To solve the problem, a probability box modeling method of mechanical fault features is proposed. Three similar dimensionless factors (peak factor form factor margin factor) in time domain were used to obtain probability boxes. The algorithm of modeling was then proposed. Firstly, the mechanical fault raw data was divided into several segments according to the sampling frequency. Secondly, the dimensionless features in time domain were obtained for every segment. After verifying the normal distribution probability distribution type, the row vector of features was divided into several sets. From these sets, the range of the mean and variance were obtained. Finally, the DSS of mean and variance were integrated into the probability modeling algorithm of normal distribution to get the probability box. The rolling bearing’s faults raw data was used to verify this modeling method. The results show that the probability box modeling method can effectively reflect the uncertainties of fault state, which can be used for fault diagnosis.
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Proceedings
2014 International Conference on Mechatronics, Control and Electronic Engineering (MCE-14)
Part of series
Advances in Intelligent Systems Research
Publication Date
March 2014
ISBN
978-94-62520-31-8
ISSN
1951-6851
DOI
https://doi.org/10.2991/mce-14.2014.112How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - Yi Du
AU  - Jiaman Ding
AU  - An Liu
PY  - 2014/03
DA  - 2014/03
TI  - A Probability Box Modeling Method of Dimensionless Mechanical Fault Features in Time Domain
BT  - 2014 International Conference on Mechatronics, Control and Electronic Engineering (MCE-14)
PB  - Atlantis Press
SP  - 502
EP  - 505
SN  - 1951-6851
UR  - https://doi.org/10.2991/mce-14.2014.112
DO  - https://doi.org/10.2991/mce-14.2014.112
ID  - Du2014/03
ER  -