Bio-Inspired Fault Diagnosis for Aircraft Fuel Pumps Using a Cloud-Edge System
Abstract
:1. Introduction
- Divide the different tasks on the sensor side, the edge side, and the cloud side to achieve collaborative monitoring;
- The anomaly judgment method and fault diagnosis algorithm are designed for edge-side state detection and cloud fault classification;
- The feasibility and effectiveness of the proposed method are verified by fuel pump simulation experiments.
2. Fault Diagnosis Framework for Fuel Pumps Based on Cloud Edge Collaboration
2.1. General Framework
- Sensor side: At critical measurement locations of the fuel pump, multiple sensors (e.g., vibration, pressure, etc.) are strategically positioned to capture real-time operating data. These sensors facilitate the collection of comprehensive information regarding the fuel pump’s performance. The acquired real-time data are subsequently transmitted via wired connections to the edge side for further processing and analysis.
- Edge side: Upon receiving the uploaded data from each sensor, the location information of the corresponding measurement points is recorded, and the characteristic values are extracted simultaneously. Subsequently, the threshold method is employed to identify anomalies within the dataset. Segments of data that meet the abnormal condition are wirelessly transmitted to the cloud for further analysis. In the ground and airborne visual interfaces, both the abnormal alarm information and the respective positions of the measurement points are presented, providing a comprehensive overview of the detected anomalies.
- Cloud side: The fault segment information transmitted by each edge is stored in the historical database, which facilitates subsequent fault history tracing. An intelligent classification model is employed to identify the types of fault data detected by the system. Additionally, uploading more fault data are used to update and train the model parameters, thus enhancing its migration ability. Ultimately, the classification and diagnosis results are presented through the ground and airborne visual interfaces.
2.2. Data Acquisition on Sensor Side
2.3. Anomaly Detection on Edge Side
2.3.1. Detection Index
2.3.2. Threshold Detection
2.3.3. 3/5 Strategy
2.4. Cloud Fault Pattern Recognition Algorithm Based on Convolutional Auto-Encoder
- Feature extraction process
- 2.
- Feature reconstruction process
- 3.
- Classifier
3. Experiment and Result Analysis
3.1. Experimental Setup
3.2. Result of Edge Side Detection
3.3. Performance Comparison of Different Fault Diagnosis Algorithms for Fuel Pumps
3.4. Analysis of the Influence of Sample Number on Cloud Diagnosis Algorithm
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Data Availability Statement
Conflicts of Interest
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Time Domain Index | Sensitivity | Stability |
---|---|---|
Peak | Preferably | Common |
Peak-to-peak | Common | Common |
Mean | Worse | Preferably |
Root-mean-square | Preferably | Preferably |
Kurtosis factor | Well | Common |
Waveform factor | Bad | Well |
Margin factor | Well | Common |
Skewness | Common | Worse |
Pulse factor | Common | Common |
Peak factor | Common | Common |
Model | Accuracy | Precision | Recall | F1-Score |
---|---|---|---|---|
SVM | 76.70 ± 1.67 | 80.12 ± 1.39 | 76.70 ± 1.28 | 76.40 ± 1.20 |
ELM | 78.40 ± 0.97 | 82.35 ± 0.71 | 78.40 ± 1.32 | 77.63 ± 1.25 |
CNN | 89.65 ± 0.77 | 89.99 ± 0.96 | 89.65 ± 1.02 | 89.75 ± 0.86 |
LSTM | 91.70 ± 1.04 | 92.69 ± 0.87 | 91.70 ± 2.06 | 91.45 ± 1.65 |
CAE (proposed) | 96.05 ± 0.62 | 96.46 ± 0.63 | 96.05 ± 0.99 | 96.03 ± 0.33 |
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Share and Cite
Miao, Y.; Li, Y.; Pan, J.; Liu, Z.; Liu, L.; Wang, Z.; Wang, Z. Bio-Inspired Fault Diagnosis for Aircraft Fuel Pumps Using a Cloud-Edge System. Biomimetics 2023, 8, 601. https://doi.org/10.3390/biomimetics8080601
Miao Y, Li Y, Pan J, Liu Z, Liu L, Wang Z, Wang Z. Bio-Inspired Fault Diagnosis for Aircraft Fuel Pumps Using a Cloud-Edge System. Biomimetics. 2023; 8(8):601. https://doi.org/10.3390/biomimetics8080601
Chicago/Turabian StyleMiao, Yang, Yantang Li, Jun Pan, Zhen Liu, Lei Liu, Zeng Wang, and Zijing Wang. 2023. "Bio-Inspired Fault Diagnosis for Aircraft Fuel Pumps Using a Cloud-Edge System" Biomimetics 8, no. 8: 601. https://doi.org/10.3390/biomimetics8080601