Adjustable asymmetric tristable stochastic resonance weak fault feature enhancement method

Abstract

The application discloses a kind of adjustable asymmetric three-stable random resonance weak fault feature enhancement methods, belong to rotating machinery fault diagnosis technical field, by constructing structure adjustable asymmetric three-stable random resonance model, by regulating and controlling asymmetric factor and the matching relationship of system parameter, realize the quantitative regulation and control of potential function trap width, trap depth asymmetric structure, in combination with the improved signal-to-noise ratio index completes model parameter adaptive optimization, effectively solve the problem of weak fault feature extraction of rotating machinery key component under strong noise background, improve the precision and engineering applicability of fault diagnosis.

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