| With the rapid development of the virtual instrument technology, it is aninevitable trend to take the experiment lesson in universities using the virtualinstrument. Aiming at the improvement of the experiment condition and making theinnovation in teaching deepen, the project is to design and develop a dynamic testingsystem, which is based on the testing platform designed before.The testing system we discussed is made up of the PC, a hardware platformincluding a DAQ module and a signal generator, and USB interface. With the use ofthe graphical interfaces application software LabWindows/CVI, various instrumentpanels are generated. Data could be done with, expressed, transformed, stored, anddisplayed on these panels. And combining the theory of dynamic testing, we can usethe testing system to carry out kinds of experiments, such as the waveform analyze,the frequency spectrum analyze and the system dynamic characteristic testing, etc.In this paper, we introduce the theory of the dynamic testing, the technology ofVI and the USB firstly, and then discuss the collectivity design of the system. Thefollowing Chapters introduce the theory and design scheme of hardware platform, andthe software design. |
