LIU Ziyan, WU Yiwei, WANG Guan, et al. Data-Driven Research on Health Monitoring Algorithms for the Liquid Rocket Engine[J]. 2024, 58(4): 182-191.
DOI:
LIU Ziyan, WU Yiwei, WANG Guan, et al. Data-Driven Research on Health Monitoring Algorithms for the Liquid Rocket Engine[J]. 2024, 58(4): 182-191.DOI: 10.7652/xjtuxb202404017.
Data-Driven Research on Health Monitoring Algorithms for the Liquid Rocket Engine
Regarding the difficulty in identifying and locating faults such as the root fracture of the oxygen rotor of the rocket engine and cracks at the joint of the shaft disk
fault detection and mode discrimination at the data level are conducted based on the test data of a certain liquid rocket engine through machine learning
data analysis
and other methods while bypassing the internal complex physical mechanism. For fault detection
two fault detection algorithms respectively applicable to fast-variable data and slow-variable data are proposed
which can process rocket engine data under various working conditions and achieve high accuracy rates of 84.2% and 94.9% respectively after testing. For fault mode discrimination
a clustering algorithm based on the sliding window is presented
which can realize the distinction of different fault modes
and the recognition accuracy of the two fault modes can reach 86.2% and 95.5% respectively. The abnormal frequency interval of vibration data corresponding to the two fault modes is given
thus providing related clues for relevant researchers.
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