Development of Full Digital Platform of Dynamic Test and Analysis System and Its Applications

To finally use of dynamical testing and analytical, a new platform is presented in this paper. It is based on Σ-ΔADC DAC and DSP, with high performance of 24 bits resolution in each of 8 channels and many functions of digital signal acquisition, signal processing, signal sources producing and data transmitting. The test performances are given in picture and table. The digital signal processing involves FFT, Zoom-FFT, power spectral density (PSD) and some of new algorithms as wavelet and sub band-wavelet FFT and others. The signal sources can produce many usual kinds of waveform. All the data can be transmitted to/from PC application, designed for data displaying, secondary signal processing, signal source controlling and the interface between the users and PC via USB2.0 devices. The application systems can be used in vibration, shock and noise test.