Deep adversarial diagnosis method for fan bearing fault under non-equilibrium small sample scene
A small sample, unbalanced technique used in mechanical bearing testing, neural learning methods, computer components, etc.
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[0054] In the present invention, a fan bearing fault depth confrontation diagnosis method in consideration of unbalanced small sample scenarios includes the following steps:
[0055] 1) Wind turbine bearing vibration signal collection
[0056] Acceleration sensors are used to collect wind turbine bearing normal state signals, rolling element fault vibration signals, inner ring fault vibration signals and outer ring fault signals, and record the above signals with a 16-channel data recorder, and the signal sampling frequency is 12kHz;
[0057] 2) Improve AC-GAN model construction
[0058] Generative Adversarial Networks (GAN) consists of two parts: Generator (G) and Discriminator (D); G maps the noise signal z to the sample space to obtain the generated sample data X fake =G(z); will generate sample X fake or real sample X real Input the discriminator, judge by D and output the probability value (P(S|X)=D(X)), which indicates the probability that the sample X belongs to S, a...
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