Fault diagnosis index based on meshing cycle characteristics of solar gear local faults
Local gear damage is a common failure mode in the planetary gear box service.Due to the complex internal structure in planetary gear box,the meshing vibration signals between the gear teeth are modulated by the different complex frequency components,so the interpretation of vibration signal frequency components is very important for the fault diagnosis of the planetary gear box.In order to solve the above problems,a pseudo-tidal frequency based on fault motion characteristics was proposed to realize the fault diagnosis of planetary gear box,and the vibration signal model of local fault of planetary gear box solar wheel was established,and the expression of spectral analysis was derived.The vibration signals of the solar wheel under different conditions were collected through transmission experiments to verify the modulation effect of the pseudo tidal frequency,and further improve the interpretation of the amplitude modulation components in the vibration signals of the solar wheel local fault.
planetary gearboxpseudo tidal frequency modulationsignal modelsolar gear local faults
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