The Computer System For Signal Processing And Vibration Analyses

In the paper, both the frequency and spectrum analyses and testing modal analyses have been investigated based on the research achievements of the internal and abroad. Data interface software has been developed with the data picking box CRAS.Testing datas are gathered by using data picking box CRAS.A general dynamic model for analyzing characters of vibration system has also been developed according to the input and output applied on the testing system. Identifications for structure modal parameters and frequency-spectrum characters have been carried out by calling the interface software developed unpon Matlab software in both the time field and the frequency field.The structure modal parameters and frequency-spectrum characters have been accurately calculated.The outputs of tests on the thin plate under different inputs have been investigated for testifying the system. Different solutions have been compared according to the frequency-spectrum characters and structure modal parameters. It is indicated that the solutions in this paper are consistent with the solution of the FEA methods.With the help of Matlab software ,this analysis system is able to handle almost all kinds vibration problems on testing and analyses. This paper makes a new research way for developing the processing system.