基于相空間重構(gòu)的定子繞組端部機械振動信號監(jiān)測研究

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中圖分類號：TN913.6-34；TH164 文獻標識碼：A 文章編號：1004-373X（2025）10-0167-06

Abstract：The industrial environment where stator winding endsare applied has a large numberof noise sources，and the mechanicalvibrationsignalcharacteristicsofstator windingendshavethefeaturesofwidedynamicrangeandhighrandoness， makingthephasespacestructureofthevibrationsignalcomplex，dificult toaccuratelyreconstruct，andunabletocapturethe complexdynamicbehaviorofthesignal，andresultinginextremelyhighdificultyinvibrationmonitoring.Onthisbasis，a methodformonitoring mechanicalvibrationsignalsatthestatorwindingsendisproposed.Thethree-axisaccelerometerssoris used tocollectmechanicalvibrationsignalsatthestatorwindingendsoastoobtainthetime-frequencymanifoldcharacterstics ofthevibrationsignals.Bycombiningtime-frequencyatomswithphasespacereconstructionmethod，thetime-frequency distributionofvibrationsignalsinvariousdimensionsofphasespaceisreconstructedtoaccuratelycapturethecomplexdynamic behaviorofsignals，highlightthediferencesbetweevibrationsignalsandnormalsignalsandimprovethesensitivityof monitoringsmallchanges insignalswithinawidedynamicrange.Theenhancedvibrationsignalisinput intoabidirectionallong short-termmemorynetwork（BiSTM）model，soastorealizethemechanicalvibrationsignalmonitoringatthendofthestator winding.TheexperimentalresultsshowthattheJTFEindexissignificantlyreducedafterusingtheproposedmethod，indicating thatthefrequencybandenergydistributionofthevibrationsignalismoreconcentrated，andthevibrationsignalcanbe monitored more accurately.

Keywords：stator winding end;mechanical vibration signal; phase space reconstruction;vibration signal monitoring;hreeaxis accelerometer sensor; bidirectional long short term memory network; time-frequency manifold feature

0 引言

在電力系統(tǒng)的發(fā)電機和電動機等旋轉(zhuǎn)設(shè)備的維護需求中，定子繞組是核心部件之一，其健康狀態(tài)直接關(guān)系到設(shè)備的運行效率和安全性12。（剩余6846字）