擦伤信号的时频分析研究

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1、西南交通大学硕士学位论文擦伤信号的时频分析研究姓名：王媛媛申请学位级别：硕士专业：光学工程指导教师：王黎20080401西南交通大学硕士研究生学位论文第1I页AbstractTheproblemthathowtomeasurethefaultofthetreadprofileisconcernedallalongandperpetualstudiedandimproved．Thatisbecausetheirregularitiesoftreadprofilearethekeyfactorofinfluencingthesafet

2、y,stabilizationandeconomyofrunning．Thearticlegoesintoparticularsofon—linemeasurementequipmentoftreadirregularities．Itmakesuseofaccelerationsensorswhichcapturethecollisionaccelerationbetweenthewheelandrail，andalsobytheuseofelectricchargeamplifier,wecangetthevoltagewhic

3、hcorrespondstotheacceleration，thenbydealingwiththedata,wecanestimatethedegreeofthetreadirregularities．Thedetectivedevicessystemcontainsthesensorsfixedupatthesideofrailwayandcomputeractedascontrolling．Alogicalsystemissettoeliminatetheinterferonbetweentwowheelsandfindou

4、ttheirregularwheels．Thissystemalsointroducescomputerfortheauto·-supervisinganditconsistsofanauto·-controllingsystemformanipulationanddataprocessingwhichUSeScomputerasitscentrepart．Itcanprovidereliabletechnologicalguaranteeforrepairandmakewheeldetectionuptomodemlevel．I

5、nthesegmentofdataprocessandsoftwaredesign，becausethewaveletanalysishasSOstrongpowertoanalyzethenondinearsteadysignal，SOweuseMoultriesolutionanalysistoprocessthedatawecollected．Atthesametime，byconstructingthesignalaftercomposethem，wefiltratethehighfrequencycompositiont

6、ooptimizethesignal．Afteranalyzingagreatdealofdata,weeducesomeoutcomebyexperience．Combingtheprincipleofdeterminethepositionofthewheel，wefindouttheirregularitiesoftreadandmakesomereportformsinthispaper．‘。Thecharactersoftheequipmentarehigherautomation，efficiency,easyoper

7、ation，credibleresults，andintuitionistoutputandcanrealizeon-linemeasurement．Ithaswideprospect．Keywords：TreadIrregularities，acceleration，RailwayVehicles，IrregularitiesDepth西南交通大学豳南父逋大罕学位论文版权使用授权书本学位论文作者完全了解学校有关保留、使用学位论文的规定，同意学校保留并向国家有关部门或机构送交论文的复印件和电子版，允许论文被查溯和借阅。本人授权西南

8、交通大学可以将本论文的全部或部分内容编入有关数据库进行检索，可以采用影印、缩印或扫描等复印手段保存和汇编本学位论文。本学位论文属于1．保密口，在年解密后适用本授权j_

9、骞；2．不保密窿，使用本授权书。(请在以上方框内打“√”)学位做作者躲蕃娠媛指制