Mechanical fault diagnosis method based on parameter adaptive VMD
A technology for mechanical faults and diagnosis methods, applied in the testing of mechanical components, genetic models, genetic laws, etc., can solve problems such as information omission, influence of decomposition results, and difficulty in obtaining satisfactory analysis results, and achieve strong signal detection capabilities and accurate analysis. the effect of the result
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[0052] The present invention uses the weighted kurtosis index (KCI) as the fitness function, adaptively obtains the VMD decomposition parameter that best matches the signal to be analyzed through the optimization algorithm, and uses the best matching VMD decomposition parameter to perform VMD decomposition on the original vibration signal, and then Realize mechanical fault feature extraction and fault diagnosis. Since the weighted kurtosis index comprehensively considers the characteristics of the modal components and the correlation between the modal components and the original signal, using it as the optimization objective function can effectively avoid the problem of information omission, thereby improving the signal detection ability of the VMD method in mechanical fault diagnosis. , to achieve accurate diagnosis of mechanical faults.
[0053] The embodiment provides a method for diagnosing mechanical faults, and the workflow is as follows: figure 1 shown, the specific st...
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