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基于虚拟仪器的振动测试系统开发毕业设计（论文）任务书设计（论文）题目：基于虚拟仪器的振动测试系统研究姓名院系电气信息学院专业班级学号指导老师职称教研室主任一、基本任务及要求：设计一个基于LabVIEW的振动测试系统，采用适当的传感器采集到振动信号后由NIM系列数据采集卡6221将数据传至主机。通过LabVIEW可视化编程对采集到的信号进行相应处理预处理以及时域频域分析。设计的主要任务是：①查阅相关资料确定总体设计方案；②根据课题要求确定硬件方案、硬件设计；③软件设计，学习LabVIEW可视化编程软件，对软件的具体模块编程并对信号进行处理；④完成文献综述、开题报告及毕业设计说明书及设计说明书的撰写工作。二、进度安排及完成时间：①3月2日～3月22日：查阅相关资料，搜集课题所需资料，了解课题现状、课题研究的目的和意义，学习LabVIEW软件，完成开题报告和文献综述。②3月23日～4月5日：毕业实习③4月6日～4月15日：系统总体方案和硬件电路设计以及传感器选型；④4月16日～5月15日：完成各软件模块的编写及调试⑤5月16日～6月14日：整理资料，撰写毕业设计论文。⑥6月15日～6月19日：毕业论文审定、打印，答辩准备⑦6月20日～6月24日：答辩基于虚拟仪器的振动测试系统开发目录摘要········································································································IAbstract·····································································································II第1章绪论·····························································································11.1课题研究的背景和意义········································································11.2振动测试技术发展现状和发展趋势·························································11.3课题主要研究内容··············································································2第2章虚拟仪器和labview··········································································42.1虚拟仪器··························································································42.1.1虚拟仪器的概述············································································42.1.2虚拟仪器的发展历史、现状和趋势····················································52.1.3虚拟仪器的特点············································································62.1.4虚拟仪器的分类············································································62.2labview·····························································································72.2.1labview概述·················································································72.2.2labview的应用··············································································82.2.3labview的特点··············································································8第3章振动测试分析系统··········································································103.1振动测试系统概述·············································································103.2振动测试系统的组成··········································································113.3信号测试与分析················································································13第4章虚拟震动测试分析系统的硬件配置·····················································154.1传感器····························································································154.2电荷放大器······················································································164.3数据采集卡的选用·············································································16第5章虚拟震动测试分析系统的软件设计·····················································195.1数据采集模块···················································································205.2信号预处理模块················································································225.3时域分析模块···················································································235.4频域分析模块···················································································255.4.1FFT分析····················································································255.4.2功率谱分析·················································································265.4.2.1自功率谱密度·········································································265.4.2.2互功率谱密度·········································································28湖南工程学院毕业设计论文5.4.2.3相干函数···············································································285.5时频分析模块···················································································29第6章总结与展望···················································································31参考文献··································································································33致谢······································································································34基于虚拟仪器的振动测试系统研究I基于虚拟仪器的振动测试系统研究摘要：随着计算机和软件技术的发展，虚拟仪器正在逐渐成为测试领域的发展方向，采用虚拟仪器实现振动测试与分析也成为振动测试的发展趋势。为了解决工程振动问题,机械振动测试系统随着振动测试技术理论的发展和生产对测试的需求与日俱增,并有着广泛的应用领域。在工程现场的振动测试中,迫切需要低成本、高精度、高效率,同时方便灵活的测量仪器。振动测试试验系统是根据某些零部件振动测试的要求设计的,通过对被测系统施加各种波形的激励,使其产生振动,由传感器测量其振动的响应,将此信号进行调理放大,再由频谱分析仪获得系统的响应特性。为此，本课题研究开发了以PC为硬件平台、以美国国家仪器(NI)公司开发的LabVIEW软件为开发平台，配合必要的传感器、信号调理器和数据采集卡组成的振动测试分析系统。采用虚拟仪器图形化编程语言LabVIEW组建的振动测试分析系统，减少了测试过程中的硬件设备，同样实现了对振动信号的采集、处理和分析的目的，大大降低了硬件成本。关键词：虚拟仪器，振动测试，LabVIEW，数据采集，信号分析基于虚拟仪器的振动测试系统研究IITheDesignofVibrationTextSystemBasedOnVirtualInstrumentAbstract:Withthedevelopmentofcalculatorandthesoftwaretechnology,thevirtualinstrumentisbecomingthedevelopmentdirectionintextdomains,andusingvirtualinstrumenthasbeenadevelopmenttrendtorealizethetextandanalysisofvibration.Asthedevelopmentandproductionoftechnologytheoryinvibrationtext,inordertosolvetheproblemofvibration,theneedoftextinvibrationtextsystemincreasewitheachpassingday,andhasexten