基于相空间重构的定子绕组端部机械振动信号监测研究

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中图分类号：TN913.6-34；TH164 文献标识码：A 文章编号：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

在电力系统的发电机和电动机等旋转设备的维护需求中，定子绕组是核心部件之一，其健康状态直接关系到设备的运行效率和安全性12。（剩余6846字）