基于FPGA的信号发生器设计论文

基于FPGA的信号发生器设计论文I摘要信号发生器是数字设备运行工作中必不可少的一部分，没有良好的信号源，最终就会导致系统不能够正常工作，更不必谈什么实现其它功能了。本次论文主要研究了基于FPGA的函数信号发生器的设计思路与软硬件实现。首先介绍了本次设计任务的总体设计方案，以及该方案中涉及的知识点，所使用的软件及硬件基本知识。在此基础上进行了硬件电路的设计，主要采用DDS（直接数字频率合成）方案，采用了Altera公司的低成本cycloneII系列FPGA的EP2C5QC8作为核心芯片，构建了外围的0832DA转换电路，以及1MHZ低通滤波电路。再次介绍系统软件的设计过程，给出了FPGA自底向上的设计思路，以及各个底层模块的设计原理与思路分析，最后介绍了相关软件的应用知识。最后一段介绍了论文的相关结论，进行仿真调试的过程。实现了设计任务的频率从100HZ到1MHZ可调，幅度从0.1V到5V可调的功能。系统的设计方案和设计过程具有参考和学习价值。关键词：信号发生器FPGAModelsimVerilog语言基于FPGA的信号发生器设计论文IIAbstractThesignalgeneratorisanessentialpartoftheworkofdigitalequipmentoperation,withoutagoodsource,andultimatelywillcausethesystemtoworkproperly,nottotalkabouttheachievementofotherfeatures.ThisthesisstudiedthesoftwareandhardwaredesignoftheFPGA-basedSignalGenerator.Firstintroducedtheoveralldesignofthedesigntask,andknowledgeinvolvedintheprogram,usebasicsoftwareandhardwareknowledge.Onthisbasis,thehardwarecircuitdesign,usingDDS(DirectDigitalFrequencySynthesizer)program,usingAltera'slow-costcycloneIIFPGAseriesEP2C5QC8corechiptobuildaperipheral0832DAconversioncircuit,and1MHZlowpassfiltercircuit.Re-introducethesystemsoftwaredesignprocess,givenFPGAdesignideasfromthebottomup,aswellasthedesignprinciplesandideasofthebottommodule,andfinallyintroducedasoftwareapplicationknowledge.Thelastparagraphoftheconclusionsofthepaper,simulationdebuggingprocess.Designtaskfrequencyisadjustablefrom100HZto1MHZfunctionoftheadjustablerangefrom0.1Vto5V.Systemdesignanddesignprocesshasareferenceandlearningvalue.Keywords:Signalgenerator，FPGA，Modlesim，VerilogHDL基于FPGA的信号发生器设计论文III目录摘要................................................................................................................IABSTRACT..................................................................................................II目录..............................................................................................................III前言................................................................................................................11概述............................................................................................................31.1FPGA简介...........................................................................................31.2MODELSIM简介.....................................................................................81.3DDS基本原理介绍.............................................................................92设计方案..................................................................................................122.1总体设计思路....................................................................................122.2方案论证............................................................................................132.2.1方案一..........................................................................................132.2.2方案二..........................................................................................132.2.3方案三..........................................................................................142.3方案确定............................................................................................143硬件电路设计..........................................................................................163.1硬件设计注意事项............................................................................163.2DA电路..............................................................................................163.3滤波电路............................................................................................183.4硬件电路实现....................................................................................204软件设计..................................................................................................214.1波形产生模块....................................................................................214.1.1正弦波..........................................................................................214.1.2矩形波.........................................................................................234.1.3三角波.........................................................................................244.2频率控制模块....................................................................................244.3相位累加模块....................................................................................254.3选择波形模块....................................................................................264.4幅度控制模块....................................................................................27基于FPGA的信号发生器设计论文IV5调试....................................................................................................325.1设计及仿真调试使用设备................................................................325.2调试方法............................................................................................325.2.1硬件调试.....................................................................................325.2.2软件调试.....................................................................................325.2.3综合调试...................................