旋转机械的角位移测量及故障判断系统摘要本设计采用软件和硬件相结合的方法，将圆光栅传感器、数据采集器、计算机和虚拟仪器技术结合在一起，具有较高测量机构的凸轮机构分度精度测量系统，并能实现实时数据处理、显示和打印测量结果，通过对测试软件加以丰富和完善，对凸轮特性加以分析，则可实现凸轮机构的故障诊断功能。关键词:圆光栅传感器；虚拟仪器；数据采集卡；LabVIEW；细分；计数判定；转角显示；记录；FFT变换ITherevolvingmachineryangulardisplacementsurveyandbreakdowndiagnosissystemdesignABSTRACTThisdesignusesthemethodwhichthesoftwareandthehardwareunify,therounddiffractiongratingsensor,thedataacquisitioncard,thecomputerandtheVirtualinstrumenttechnologyunifiesintogether,realizestothecamindexingorganizationindexingprecisionsurvey.Usesthemethodwhichthehypothesizedinstrumentsoftwareprogramstorealizetosurveysthesignaltheprocessinganalysis,mayrealizereal-timefunctionsandsooncornerdemonstration,recordingandprintingmeasurementresult,throughcarriesonthefrequencyrangeanalysistothesurveysignal,mayrealizetothecamgearbreakdowndiagnosisfunction.KEYWORDS:Rounddiffractiongratingsensor;Virtualinstrument;Dataacquisitioncard;LabVIEW;Segmentation;Countingdetermination;Cornerdemonstration;Record;FFTtransformationII目录摘要..............................................................................................................................IABSTRACT..................................................................................................................II1系统总体方案的设定.................................................................................................11.1测量系统的原理方案..........................................................................................12各主要模块的设定及选择.........................................................................................42.1凸轮机构的设计..................................................................................................42.1.1凸轮机构的组成.........................................................................................42.1.2凸轮机构的特点.........................................................................................42.1.3凸轮机构的类型.........................................................................................42.2光栅传感器的设计............................................................................................42.2.1圆光栅测角仪的工作原理：........................................................................42.2.2光栅式数字传感器：....................................................................................52.2.3光栅测量原理................................................................................................52.3细分技术..........................................................................................................82.3.1测角与细分原理：......................................................................................82.3.2细分方法：.................................................................................................92.4计数与判定部分的设计....................................................................................162.5转角显示和记录................................................................................................212.5.1转角显示......................................................................................
