Combining the advantages of wavelet power spectrum and rough set, scale wavelet power spectrum about measured time domain signal was calculated using scale wavelet power spectrum formula, wavelet power spectrum was made as attribute parameters and corresponding fault as decision property, and rough set was used to build the simpler knowledge base of intelligent fault diagnosis system. A new fault diagnosis method on centrifugal compressor vibration based on wavelet power spectrum and rough set theory was presented. The results show that correct diagnosis ratio of measurement samples is 100%. T...
