信号发生器论文

韶关学院课程设计说明书（论文）设计题目：波形发生器应用设计课程名称：电子技术课程设计学生姓名：陈汝淑学号：13101072054院系：物理与机电工程学院专业班级：13电子2班指导教师姓名及职称：罗欢助教陈锦儒助理实验师起止时间：2015年3月—2015年6月课程设计评分：波形发生器的设计摘要：各种电器设备要正常工作，常常需要各种波形信号的支持。电器设备中常用的信号有正弦波、矩形波、三角波等。在电器设备中，这些信号是由波形产生和变换电路来提供的。这种能够产生多种波形，如三角波、矩形波（含方波）、正弦波的电路被称为函数信号发生器。函数信号发生器产生的各种波形能满足现代测量、通信、自动控制和热加工、音视频设备及数字系统等对各种信号源的需求。在生产实践和科技领域中有着广泛的应用。本设计采用先产生方波，三角波，再将三角波变换成正弦波的电路设计，利用集成运放构成的比较器和电容的充放电，可以实现集成运放的周期性翻转，进而在输出端产生一个方波。再通过积分器产生三角波，最后通过正弦波转换电路形成正弦波。关键字：正弦波，锯齿波，方波，函数信号发生器。ThedesignofthewaveformgeneratorAbstract:Avarietyofelectricalequipmenttoworkproperly,whichoftenneedthesupportfromavarietyofwaveformsignals.Electricalequipmentcommonlyusedinsignalsinewave,squarewave,trianglewave.Inelectricalequipment,thesesignalsaregeneratedbythewaveformandtheconversioncircuittoprovide.Thiscanproduceavarietyofwaveformssuchastriangularwave,rectangularwave(includingsquare),thesinewavesignalgeneratorcircuitiscalledafunction.Functiongeneratorforavarietyofwaveformstomeetthemodernmeasurement,communications,automaticcontrolandthermalprocessing,audioandvideoequipmentanddigitalsystems,thedemandforavarietyofsources.Productionpracticesandtechnologyinthefieldhasawiderangeofapplications.ThisdesignUSEStoproducesquarewave,trianglewave,trianglewavetransformintosinewaveagaincircuitdesign,integratedop-ampcompositionofcomparatorandcapacitorcharginganddischarging,canrealizeintegratedop-ampperiodicreverse,andtheninasquarewaveoutput.Bytrianglewaveintegrator,finallyformedbysinewaveconversioncircuitsinewave.Keywords:Sinewave,sawtoothwaveandsquarewave,functionsignalgenerator.目录1.课题任务（一级标题，黑体，三号，加粗）.................................................................12.电路设计原理.............................................................................................................................42.1脉冲波原理（二级标题，黑体，小三）....................................................................52.2锯齿波原理.............................................................................................................................62.3正弦波I原理.........................................................................................................................72.4正弦波Ⅱ原理.........................................................................................................................93.PCB电路板制作........................................................................................................................113.1DXP2004软件简介.............................................................................................................113.2MULTISIM简介..................................................................................................................113.3原理图设计...........................................................................................................................123.4波形发生器PCB板图设计.............................................................................................123.5腐蚀加工与PCB板直观检查........................................................................................133.6焊接与通电前测试.............................................................................................................144.波形发生器的测试......................................................................................................................144.1脉冲波波形测试..................................................................................................................144.2锯齿波电路测试..................................................................................................................154.3正弦波I波形测试..............................................................................................................154.4正弦波II电路测试............................................................................................................174.5常见故障检测分析.............................................................................................................174.5.1计算问题(黑体、四号)............................................................................................174.5.2缺少滤波电容...............................................................................................................174.5.3线路短路或者断路.....................................................................................................174.5.4设计时没有加调试口.................................................................................................185.总结.................................................................................................................................................18附录......................................................................................................................................................20附录A：电路原理图................................................................................................................20附录B：PCB电路板图...........................................................................................................20附录C：实物照片.................................................................................................................