特征提取
人工智能
歧管(流体力学)
计算机科学
信号(编程语言)
小波
模式识别(心理学)
波形
深度学习
工程类
电信
机械工程
雷达
程序设计语言
作者
Xiaomeng Li,Yi Wang,Hulin Ruan,Baoping Tang,Yi Qin
出处
期刊:IEEE Transactions on Instrumentation and Measurement
[Institute of Electrical and Electronics Engineers]
日期:2023-01-01
卷期号:72: 1-10
标识
DOI:10.1109/tim.2023.3290294
摘要
Extraction of weak impulses is very essential for fault detection of rolling bearings. Since the weak transient impulse may be submerged in interferences or background noise, therefore, it still very challenging for weak signal enhancement. However, the reported weak signal enhancement techniques based on band-pass filtering or wavelet basis optimization to match the weak transient features, as a result, the performance, flexibility and adaptability are constrained. Aiming at the aforementioned shortcomings, deep manifold learning (DML) is proposed in this paper for weak signal detection. In the proposed method, a mapping model between the noisy waveform feature manifold (WFM) and the pure repetitive impulses is constructed and the high-dimensional WFM can be adaptively mined by deep compression. The mined signal obtained by encoding of the high-dimensional WFM is considered as the detected signal. The experimental results demonstrate that the proposed DML method is adaptive, flexible, and outperforms the conventional methods based on traditional manifold learning.
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