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2023HUMS 数据挑战赛成果： Cranfield团队

ID：72798

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大小：1.36 MB

页数：6页

时间：2025-01-03

金币：10

上传者：神经蛙1号
HUMS2023 Data Challenge Result Submission
Team Name: Cranfield
Team Members: Fathima Parveen, Agusmian Ompusunggu
Institutions: Cranfield University
Publishable: Yes
1. Summary of Findings
This report summarizes the findings of the data challenge that The Defence Science and Technology Group (DSTG)
prepared for the upcoming HUMS2023 Conference. The challenges involved the earliest convincing detection of the
planet gear crack and the best trending capability of the crack progression. After exploring various combinations of
relevant signal processing techniques, automated cepstral editing followed by synchronous signal averaging (SSA) is
taken into consideration to enhance crack-related signatures in the signal for both challenges. Each channel signal is
processed using this procedure. Eight features are then extracted from each processed signal. The feature ranking
based on the monotonicity metric is carried out to select the most relevant feature that can be used for early detection
and trending. The analysis shows that the kurtosis of the enhanced signal is the most relevant feature. It is found that
the kurtosis feature of the enhanced signal calculated from channel 2 could detect the crack at the earliest with the
CUSUM method. The earliest detection is found on channel 2 at file number 346. Subsequently, the crack can be
detected using the same procedure on channel 1 at file number 421.
Table 1 Summary of Analysis Results
#
Detection & Trending
Data file name/number
Comments
1
Consistent detection on at least one
signal channel; i.e. the fault indicators
remain consistently above the threshold.
• File#: 346
• Filename:
'Day025_Hunting_SSA_2022011
1_110020.mat'
• The change of the fault
indicator (Feature 2) is
detected by the CUSUM
analysis on Channel 2.
• See Figure 1(b)
2
Confirmed detection on at least two
signal channels; i.e. the fault indicators
remain consistently above the threshold.
• File#432
• Filename:
'Day026_Hunting_SSA_2022011
4_111444.mat'
• After File#432, Feature 2 is
consistently above the
threshold on Channel 1 and
Channel 2
• See Figure 1(b) & Figure 2(b)
3
Clear multi-channel indication of the
characteristic fault features; i.e. faulty
• After file#489
• After file#489, Feature 2 is
consistently above the
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