A Fault Diagnosis Method Based on Adaptive Manifold Embedding and Dynamic Distribution Alignment
An adaptive flow and fault diagnosis technology, which is applied in the fields of mechanical fault diagnosis and machine learning, can solve problems such as data feature distortion and unsatisfactory model diagnosis effects, and achieve fast execution speed, strong interpretability, and avoid feature distortion.
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[0081] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.
[0082] The present invention is described in detail in conjunction with actual experimental data:
[0083] The experimental data adopts the bearing data set of Case Western Reserve University (CWRU). The data acquisition system is shown in Figure 1. The rolling bearing test bench includes a 2-horsepower motor (1hp=746W), a torque sensor, a dynamometer and Electronic controls. Introduce faults in test bearing rollers, inner rings and outer rings by electric discharge machining (EDM), and set different fault sizes. Vibration data is collected using accelerometers.
[0084] In this example, we select the bearing vibration signal with a sampling frequency of 12KHz as the original da...
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