Theoretical and experimental analysis of bispectrum of vibration signals for fault diagnosis of gears
The bispectrum of the signal containing multiple periodic components is studied. Biphase verification is essential for decreasing the false alarm of bispectrum-based method. The bispectrum characteristics are revealed for the vibration of faulty gear. A diagnostic approach by biphase verification is proposed for gear faults.
bispectrum vibrations fault diagnosis gears