Research on Virtual Function Signal Generator Based on LabVIEW

This paper introduces briefly the structure and characteristics of LabVIEW,and provides a detailed description of the design of a kind of function signal generator based on LabVIEW.This instrument has a friendly interface,powerful function and easy operation.The results of simulated experiments indicate that this virtual function signal generator can generate sine wave,triangle wave,square wave,saw-tooth wave as well as white noise signal and multitone wave.Besides,it can produce non-periodical special signals for test after formula input.It provides a wider range of frequency of waveform output,a function of in-phase display of amplitude frequency spectrum,and the parameters are adjustable.Thus it can possibly meet the various measuring requirements in different situations.