The Research On Dynamic Damping Experiment System Of Two Freedoms Based On LabVIEW

The vibration is one kind of usual phenomena in the project reality。So vibration analysis already become the essential link in every project technical research and design. The vibration experiment is an indispensable experiment content of universities too. The vibration experiment which the university offers mostly use the separation equipment at present, it is large to take up the place, the function is very weak on the data analysis side. This paper uses virtual instrument technology to develop The Research on Dynamic Damping Experiment System With Two Freedoms Based On LabVIEW. At first this paper sets up the mathematics model on Dynamic Damping Experiment System of two freedoms. On the basis of calculating in analysis on mechanics model, the girder adopts the frame posture structure roof beam, the ones that have designed rigidity and can be regulated have enclosed the roof beam structure, this paper has finished the design of the vibration laboratory bench device . There are surge the selecting type of signal generators , the shaking device and power amplifier and installment work too. With the respect in the data acquirement, has confirmed one slice of schemes of measuring the vibration signal by meeting an emergency, adopt a pair of polarity (shoulder 2.5 volts) high accuracy support the bridge power , and design power amplification, two steps strain waves (close at frequency f), the appearance uses and enlarges the circuit. This paper has selected LabVIEW software that NI develops for use as the software platform, the data acquire, analyse and process the software after developing the new vibration signal , make the data analyse and process automation. The structure of the software can be divided for the main interface module, output module (fictitious signal source module ) , input module ( vibration datum gather the module ) , vibration data analysis module, the vibration data store module , vibration signal playback and help file. Is it shake to Dynamic Damping Experiment System With Two Freedoms vibration signal gather and monitor in real time to reduce to realize; And can go on the frequency spectrum of the need to analyse , can select for use Fourier Transformation, power spectrum , auto-correlation function , cross-correlation function ,etc. many kinds of signals analyse and process the method each other; And has offered various kinds of to analyse the keeping with the record format of the data of the result, it is analysed that the result is typed and the analysis report one produce the function; the man-machine interface is friendly , easy to operate, and this paper finish one signal date test softwore with good opening and expanding many function.