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213JOURNALOFVIBRATIONANDSHOCKVol.21No.32002Web(,116023)Web,Web,Web,Web,Internet,,WebWeb:,Web:,,,:TP274,TH240,,HVAC,,;,1,,PC,(VI)VI1/10,VI,PCVI:PC2,PCIntranetInternet,VIPC,PC,PCInternetIntranet,VIJavaApplets,VI,VI,InternetIntranet,12WebWeb:2002-01-08,,19746VI,WebWeb,WebIEEE1451.2,Web,Bruel&Kjaer,Web,Web:VI,IEEE1451.2WebVIJava,VIBrowserAppletsActiveServerPageWeb,,1WebWeb:1.1WebWebecompatibleIT,Internet/IntranetWebPCA/DWINDOWSNTLinux,WebServerInternet/IntranetWebServer,3,Internet(4),,,34Webclient/serverbrowser/(VI)(VI)PC,573:Web1/10,Web,,(FFT)(WAVELET)(5)Java,BrowserApplets;,,FFT,,,,,VI;VIJava,VI,VIInternet,VI,Internet,VI,Web,,VIVI,VI,,InternetVI,VI,Web5FFTWavelet61.3Web58200221Web(6),,WebWeb(CGI)Web,WebCGICGI,,CGICGI,ActiveServerPages(ASP),ODBC(OpenDatabaseConnectivity)ASPVBScript,,,ASP(SQL);SQL,HTMLAPSWeb,,;,ASPVI,Web,7Web7WebWeb,,;,,Internet,2Java,Java:JavaAppletsJavaServletsJavaBeansJSPJDBCJavaAppletsJava,Html,,JavaAppletsJavaApplets,JDBCWebJSP+JSPServletsJSP+JavaBeansJavaAppletsJavaSocketPC,JavaServletsJavaBeansWebJava,JavaApplets,JVM(Java)JavaAp593:Webplets,Java,JavaJSPJDBCWebJavaServletsJavaBeans,JavaBeansJSPASP,JavaHTML,JSPJavaBeansServlets,JSPHTMLBeansServlets;BeansServlets1.2,BeansServletsJSP+BeansASP+COM,BeansJava,,JDBCODBCSUNJavaBeansCOM,,Beans,COMWindowsNT,NTLINUXUNIXLINUX,,LINUX,,PC,IEEE1451.5,Java,Internet,,JAVA,JAVA,JAVA,JAVA,JAVA(JVM)JAVA,JAVAJAVA;CPU,JAVAOS,JAVA,3Web,,,,Internet/Intranet,VI,VI,,,1IEEEStd1451.2,IEEEStandardforaSmarttransducerInterfaceforSensorandActuators,IEEEInstrumentationandMeasurementSociety,19982LeeJ.StrategyandChallengesonRemoteDiagnosticsandMaintenanceforManufacturingEquipment,ProceedingsoftheAnnualSympostumonReliabilityandMaintainability,1997,386-3703ApacheOnlineDocumentationsandUserManual,TheApacheGroup,:ExploitingInformationTechnologiesforProductRealization,InformationSystemsFrontiers,1(1):1999,25-50(55)Shozo,kato,Matohito,Jacobs,ErnestC.RemotediagnosisofintractableepilepsybybidirectionaltelemedicinesystembetweenJapanandUSA.ElectroencephalographyandClinicalNeurophysiology.Volume:103,Issue:1,July,1997,602,,..,1998,11(4):487-4913,,..,1999.64,,ISDN.,1999.35.,:,19956ITNews.OMGEndoresModelDrivenArchitecture.DatabaseandNetworkJournals.Volume31.Number2.April,20017,,..,1999.38,,,.,,88-94,,20009JohnDeGaspari.User_friendlySensors.Mechanicalengineering.22(1):Januray,200110..,2001.260200221andthenewunbalancedirectionnear180willdecreasethepeakamplitudeofthevibrationresponse,nomatterwhetherthenewunbalanceparameterislargerorsmallerthantheinitialbendingparameter,butbesteffectwillbeachievedifthetwoparametersareequal.Ifthenewunbalamceparameteristoobig,thepeakamplitudewillincrease.Themethodisstilleffectivewhenthegravityparameter,externalandinnerdampingcoefficientsarechanged.Finally,anexampleinliterature[2]isquotedtoillustratetheusageandeffectivenessofthenewmethod.Themethodcanbeusedinpracticetosolvethevibrationproblemcausedbytheinitialbendingshaft.Keywords:initialbending,rotor,unbalance,amplitude_frequencyresponseSTUDYONFAULTDIAGNOSISOFTHECTOSS_ROLLINGBEARINGINTHEGYRATION_SUPPORTINSTALLINGOFCOMBINEDBUCKET_WHEELSTACKERRECLAIMERWangZhigangLiYourongLuYong(WuhanUniversityofScienceandTechnology,Wuhan430081)AbstractThemainfrequencyofthevibrationsignalisultra_lowwhilefaultsappearinthecross_rollingbearinginthegyration_supportinstallingofcombinedbucket_wheelstackerreclaimer.Usingthecommonmethod,itisdifficulttolocatethecharacteristicfrequency.Inthepaper,thefaultsincross_rollingbearinghavebeendetectedsuccessfullybythecombineduseoftimedomainanalysismethodanddemodulatedresonancetechnique.Itisdemonstratedthattheresultissatisfactory.Keywords:combinationbucket_wheelstackerreclaimer,cross_rollingbearing,ultra_lowfrequencysignal,demodulatedresonancemethod,faultdiagnosisSTUDYONINTERNET_BASEDREMOTEMONITORINGANDFAULTDIAGNOSISSYSTEMYaoBaohengYangXiajuTongDechunChenZhaoneng(SchoolofMechanicalEnigneering,ShanghaiJiaotongUniversity,Shanghai200030)AbstractThetechnologyandnetworksystemstructureareanalysedinthepaper.Thepoblemisfurtherdiscussedaboutthefutureofremotemonitoringanddiagnosissystem.Keywords:internet,remotemonitoringanddiagnosis,networksystemstructure,technologyWEB_BASEDREMOTEEQUIPMENTCONDITIONMONITORINGANDCOLLABORATIVEMAINTENANCELuChenSongXigengZouJibin(InstiuteofInternalCombustionEngineofDalianUniversityofTechnology,Dalian116023)AbstractEventhoughtherearemanysuccessfulWeb_basedapplications,thereisseldomseendesignatedWeb_basedsystemformaintenance.Oneofthemainreasonsisthedifficultyindevelopingsuchasystemasitinvolveshugedatabase,intensivesignalprocessing,andnearreal_timedatacommunicationformonitoringandcontrolofequipment.Mostimportantly,itisdifficulttofindsuchexpertswhohaveexperienceindesigningboththeWeb_basedvirtualinstrumentsandautomatedsystemforequipmentfaultdiagnsis.Nevertheless,thebenefitsprovidedbytheWeb_basedmaintenancesystemaresubstantial.Expensiveha