L2-Norm Shapelet Dictionary Learning-Based Bearing-Fault Diagnosis in Uncertain Working Conditions

Bearing-fault diagnosis is an important research topic and is crucial in modern industrial systems. Several methods for bearing-fault diagnosis have been developed. However, most existing methods can only detect faults under controlled working conditions or the variation of a single working condition (e.g., a varying load). When the working conditions change or multiple uncertain working conditions are encountered, the model performance is …