Rolling bearing fault diagnosis using impulse feature enhancement and nonconvex regularization
Mechanical Systems and Signal Processing(2020)
摘要
•Weak impulses are enhanced by structure characteristic matrix.•A new cost function is developed to induce the sparsity.•Weak fault features are extracted by the two-step strategy.•The performance is verified by experimental data.
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关键词
Feature enhancement,Total variation,Nonconvex regularization,Rolling bearing
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