{"title":"Segmented time-varying transformation stochastic resonance and its application in coupling misalignment fault diagnosis","authors":"Hao Shu, Anji Zhao, Jiachen Tang, Zhongqiu Wang, Jianhua Yang, Zhen Shan","doi":"10.1007/s12043-025-02912-9","DOIUrl":null,"url":null,"abstract":"<div><p>A novel segmented time-varying transformation stochastic resonance is proposed, and its use in extracting and enhancing weak misalignment fault features of the coupling under variable speed conditions is studied. At first, the theory of the segmented time-varying transformation stochastic resonance is described in detail. Numerical simulations are carried out to successfully extract the weak misalignment fault characteristic of a coupling. Then, based on the coupling misalignment fault test bench, the method is verified under different amounts of coupling misalignment and time-variable speed conditions. The results demonstrate that the method can effectively extract the fault feature under strong noise background and time-variable speed conditions. The proposed method has a certain engineering value in coupling misalignment fault diagnosis.</p></div>","PeriodicalId":743,"journal":{"name":"Pramana","volume":"99 2","pages":""},"PeriodicalIF":1.9000,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Pramana","FirstCategoryId":"4","ListUrlMain":"https://link.springer.com/article/10.1007/s12043-025-02912-9","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
A novel segmented time-varying transformation stochastic resonance is proposed, and its use in extracting and enhancing weak misalignment fault features of the coupling under variable speed conditions is studied. At first, the theory of the segmented time-varying transformation stochastic resonance is described in detail. Numerical simulations are carried out to successfully extract the weak misalignment fault characteristic of a coupling. Then, based on the coupling misalignment fault test bench, the method is verified under different amounts of coupling misalignment and time-variable speed conditions. The results demonstrate that the method can effectively extract the fault feature under strong noise background and time-variable speed conditions. The proposed method has a certain engineering value in coupling misalignment fault diagnosis.
期刊介绍：
Pramana - Journal of Physics is a monthly research journal in English published by the Indian Academy of Sciences in collaboration with Indian National Science Academy and Indian Physics Association. The journal publishes refereed papers covering current research in Physics, both original contributions - research papers, brief reports or rapid communications - and invited reviews. Pramana also publishes special issues devoted to advances in specific areas of Physics and proceedings of select high quality conferences.
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