机械故障诊断学第10章ppt课件.ppt

第10章计算机辅助工况监测与故障诊断系统,机械故障诊断学,汽轮压缩机组工况监视与故障诊断系统,面向Internet的远程工况监视与故障诊断,诊断信息的标准化,NationalLaboratoryofHighPerformanceComplexManufacturing，Central-SouthUniversity,2,机械设备简介,汽轮压缩机组工况监视与故障诊断系统,NationalLaboratoryofHighPerformanceComplexManufacturing，Central-SouthUniversity,3,监视诊断系统的构成,NationalLaboratoryofHighPerformanceComplexManufacturing，Central-SouthUniversity,4,系统特点上下位机结构；振动信号多路同时刻采样，保证相位的可比性；三层次有机联系在一起，满足监视实时性和在线的要求；灵活的监视方式，较强的数据分析、存贮与管理、报表及图形打印等功能；智能化信号采集实时监测机组联锁信号，自动记录联锁信号动作采用对等网络通信采用PC总线计算机，便于升级，性价比高,5,信号采集系统,6,实时工况监视与状态识别系统四大功能信号获取信号处理及工况状态识别数据管理和屏幕显示向上位机传送各种信号的时域数据和特征数据。数据存储方式正常运行：定时保存异常报警：自动保留报警前后10min数据，其后数据在10min内实行滚动刷新。紧急停车：自动保留停机前10min原始数据，实现“黑匣子”功能,7,数据的管理定时保存最近三天的机组原始监测数据、当天的机组运行趋势数据、至少一年的历史趋势数据。状态识别通过振动峰-峰值或各分频幅值给出颜色，指明异常振动测点信号分析与处理启停过程分析：Bode图，三维瀑布图，轴心轨迹时域分析：时域波形，轴心轨迹，振动棒图，自相关函数，互相关函数，趋势分析等；频域分析：FFT分析，互谱分析，倒谱分析等事故停机联锁信号分析,8,报警与门限值峰-峰值报警谱峰报警趋势分析与预报峰-峰值趋势分析与预报各主要分频和倍频幅值趋势分析与预报打印功能打印各种分析图形系统运行参数及监视方式的编辑对启停采样转速间隔、采样时间间隔、传感器灵敏度系数、报警门限等进行修改或重新设置，适应不同的应用场合,9,10,11,12,13,14,15,在线分析与智能诊断系统知识库管理模块数据库管理模块知识库模块数据库模块推理机模块动态数据库模块工况分析模块帮助与服务模块任务管理模块,16,面向Internet的远程工况监视与故障诊断,17,远程监测诊断,基于internet的远程分布式监测诊断,18,19,20,21,22,23,24,25,26,27,28,29,30,31,系统结构,32,信息流程,33,现场诊断系统结构,34,35,36,37,嵌入式故障诊断及预报系统,面向Internet，协同诊断，协同预报嵌入式Web服务远程升级、维护功能可重置,38,诊断信息的标准化,目标信息共享MIMOSA标准(MachineryInformationManagementOpenSystemsAlliance),39,EnterpriseEquipmentObjectManagersite/segment/asset/measmnt/location,StatusStateofhealthRateofchangeTimetoactionProblemidentificationComponentsaffectedRecommendationsActionstatusWorkrequestConfidenceAugust,1996,Operating/ProcessMeasurements,LubeOilCondition,Thermography,UltrasonicLeakDetection,MIMOSAConceptualAssetManagementFunctionBlockthanksto:KenBever,JohnHawkins,AlanJohnston,ArtJones,PeterMorgan,ConditionMeasurements,DCSOperationsArchiveLog,MIMOSACRISInterface,AssetManagement,WorkforceManagement,WorkManagement,MROInventoryManagement,CostAccounting,MIMOSACRISInterface,PerformanceEfficiency,MechanicalDiagnostics,ReciprocatingAnalysis,ODSAnalysis,DecisionSupport,MechanicalPrognosis,RootCauseAnalysis,Requests,DataAcquisitionScheduling,Request-DataAcquisition-Complete,ConditionsFound,WorkAccomplished,MIMOSACRISInterface(future),MotorCharacteristics,On-lineVibration,DCSData,Tool&RentalEquip.Management,Calendar(scheduled)Maintenance,MaintenanceManagement,Id抯,Id抯,OperatingLogs,40,ProgresstoDate,ApprovedMIMOSACommonRelationalInformationSchema(CRIS)SpecificationVersion2.1ApprovedMIMOSAExportData(MED)FileSpecificationtoAllowBatchImport/ExportsDevelopedVIB-CORErequirementsforMachineryVibrationDatabasesDraftVersionofMIMOSAProgrammaticDatabaseInterface(PDI)LevelADefiningMIMOSASQL/CLIFunctions,41,VendorADatabase,VendorBDatabase,x-CORECompliantMEDFileUserInterface,MIMOSACommonRelationalInformationSchema(CRIS),MIMOSAZeroDatabaseReferenceTables,MIMOSAExportDataFileImport/ExportDefinition,x-SQLCompliantSQL/CLIDriver,x-OBJECTCompliantObjectManager,MIMOSASQL/CLIFunctionDefinition,MIMOSACommonObject-OrientedProtocol,MIMOSAArchitecture,XValuesVIB(Vibration)SAMPLE(Oil/Water/Air)MOTORTHERM(Thermography)DIAG(Diagnostics