范畴变量
稳健性(进化)
故障检测与隔离
算法
计算机科学
推论
冗余(工程)
符号
概率逻辑
人工智能
机器学习
数学
执行机构
生物化学
算术
基因
操作系统
化学
作者
Zheng Cao,Jisheng Dai,Weichao Xu,Chunqi Chang
出处
期刊:IEEE Transactions on Industrial Informatics
[Institute of Electrical and Electronics Engineers]
日期:2024-02-01
卷期号:20 (2): 1562-1574
被引量:3
标识
DOI:10.1109/tii.2023.3280317
摘要
Compound bearing fault diagnosis is an essentially challenging task due to the mutual interference among multiple fault components. The state-of-the-art methods usually take the potential fault characteristic frequencies as the prior knowledge and then try to recover every fault component by exploiting the impulse signal sparsity. However, they inevitably suffer from algorithmic degradation caused by energy leakage, $l_{1}$ -norm approximation, and/or improper parameter selection. To handle these shortcomings, in this paper, we propose a novel sparse Bayesian learning (SBL)-based method for the compound bearing fault diagnosis. We first present a new categorical probabilistic model to efficiently capture the truly-occurred fault components with a truncated feasible domain, which can greatly reduce the energy leakage effect. Then, we devise a more general SBL framework to recover the compound sparse impulse signal under the new categorical probabilistic model. The newly proposed method successfully avoids the $l_{1}$ -norm approximation and manual parameter selection, thus it can yield much higher accuracy and robustness. Both simulations and experiments demonstrate the superiority of the developed method.
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