毕业论文—基于LabVIEW的虚拟信号发生器.doc

: LabVIEW XXX XXXXXXXXXXXXXXXX LabVIEWCLabVIEWLabVIEWlabVIEWVISALabVIEWLABVIEW 3 Abstract Signal generator is a variety of research practice one of the most important instrument.Mostlyby the traditional hardware, but its structure is complicated, maintenanceand operational is notgood.With modern technology, the design of the signal generator, there are many types, prices varywidely, performance, become more perfect. The most important feature of LabVIEW programmingis a fool, in order to engineer from the tedious programming freed, LabVIEW implements modulartest instruments, making the test more flexible configuration, the design developed by NationalInstruments virtual instrumentation based on virtual signal generator, and traditional instrumentscompared to the price compared to cheap, simple, practical wide range of simple design and so on.The actual needs of the user can use the LabVIEW (a graphical editing language) design features ofthe virtual instrument. Can also be released through the network, then the client can remotely viewand control a virtual signal generator. The main work is to combine the virtual instrumenttechnology, arbitrary waveform signal generator of research and design.First, the paper introduces the basic theory of virtual instrument technology, including virtualinstrument concept, composition, classification, and virtual instruments compared with traditionalinstruments .On this basis, virtual instrument system software architecture, describes a simpleinstrument drivers, VISA and other related technologies. Secondly, the paper was arbitrarywaveform generator software design. Which mainly include the formation of any analog signaldigital signal generation, analog, digital signal modulation, the actual signal plus noise, andhand-painted arbitrary. Finally, a virtual arbitrary waveform generator system testing andperformance analysis results to the pre-design requirements.Keywords:Data acquisition card NI8006; Virtual Signal Generator; Signal Generator; VirtualInstrument; LabVIEW; Sine Wave; Triangle W 4 . 2 . 3 . 3 . 7 . 8 . 8 . 9 . 11 . 11 . 11 . 11 . 13 . 13 . 14 . 14 . 11 . 15 . 16CIN . 13CLF . 13CLF . 14 . 22 . 16 . 16 . 22 . 22 . 22 . 23 . 23 . 23 . 23 . 25 . 19 . 21 . 28 . 29 . 30 . 30 5 401943 6 LabVIEWPCLabVIEWC+LabVIEWLabVIEWData AcquisitionPCLabVIEWLabVIEWLabVIEW1 2 3 LabVIEW 7 2070PC,Windows MacintoshLabVIEW2.0LabVIEW20901988301994951002.93734%PCIEEE488VIPXIVXIGHz24bitsDAQA/DDAQVIDelta-sigma A/D3us12bits1/690dBDAQ 8 :(1)Nl(2)(3)(4) 9 PCGPIBVXIUSBISAPCIRS-232USBWindowsgx/NT/2000/XPLinux USB1.1 10 :12.USBLabVIEW 11 DUT;:(