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ID:36574621
大小:12.27 MB
页数:123页
时间:2019-05-12
《基于网络的数控机床远程协作诊断系统研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、上海交通大学博士学位论文基于网络的数控机床远程协作诊断系统研究姓名:宋刚申请学位级别:博士专业:机械制造及自动化指导教师:胡德金20030601根据目前故障诊断理论的研究现状和发展趋势,阐述了模糊技术与神经网络技术在数控机床故障诊断中应用的优缺点,在此基础上提如新的诊断推理数学模型一匹配滤波联想记忆神经网络,并以此模型为理论基础,结合SQLServer关系型数据库技术,开发了数控机床远程协作诊断专家系统软件,并具体实现数控机床远程协作诊断专家系统知识库的开发与管理。该软件将网络技术、数据库技术和诊断推理技术有机结合起来,实现多用户协同进行故障诊断活动。本文在最后利
2、用该软件对数控机床所发生的故障进行远程诊断试验,诊断实例显示诊断结果准确可靠,表明利用本文提出的远程数据采集与传输模块和故障诊断推理理论,可以快速、准确地诊断数控机床电器类故障和造成加工质量下降的机械类故障,并能指导现场操作人员快速排除故障。关键词:数控机床,远程协作诊断,记忆神经网络,数据采集,SQLServer数据库THERESEARCHOFCNCMACHINEREMOTEC00PERATIVEDIAGNOSISSYSTEMBASEDONINTERNETABSTRACTFollowingthedevelopmentofautomaticCNCmachine,i
3、t’Sstructureismoreandmorecomplex,it’Sfunctionismoreabundant,theproblemofrunningmaintenanceofCNCmachinegradualbecomessharp,sincethemaintenanceofequipmentisdifficultonlybyuser’Smaintenancecapability.Remotecooper—ativefaultdiagnostictechnologybasesonInternet,andrealizescooper—ativediagno
4、sistoremoteCNCmachinebymeansofexpert’Sexperienceandknowledge:itincreasesmaintenanceefficiencyofequipment。Remotecooper-ativefauItdiagnostictechnologyrealizestransmissionandacquisitionoffaultinformationinshorttime,andreducesdiagnosticexpert’Sbear,atthesametime:itisbenefitforknowledge8ce
5、轻臻强王a乞主◇nandsharingresource。What’Smore,remotecooperativediagnostictechnologycancovertheshortageofdiagnosticfieldknowledgeandincreasereliabi。lityandintelligenceofdiagnosticsystem.InthiSdissertation,firstly,faultrepresentofCNCmachineisdescribed,theexpressionmethodoffaultdiagnosticknowle
6、dgeisintroduced,then,anetworktopologicalstructureofCNCmachinefaultdiagnosticsystemisproposed,atthemeantime,aseriesofresearchoffaultdiagnostictechnologyisdeveloped.AtlastdevelopingtheremotecooperativefaultdiagnosticsystemsoftwareisdevelopedandthesoftwareiSusedtoremotediagnosingtestingm
7、achine.ThemaincontributionsofthiSdissertationareshownasi’oiiow:DirectingtowardtheresearchofcurrentstateandperspectiyesofCNCmachineremotefaultdiagnosticsystem,accordingtothestructureandfunctionofCNCmachine,firstly,authoranalyzespossiblefaultandthespecifiCmethodtoclearthefault,andconsti
8、tutes
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