Guo-Yan Li, Fang-Yi Li, De-Hao Dong, Jian-Feng Li, Hao-Hua Liu, Yi-Fan Wang

Journal: Sustainable Design and Manufacturing 2016

Abstract:

This paper aims at extracting and selecting suitable fault features to assess the damage status of planetary gearbox based on simulated and experimental signals. A nonlinear dynamic model of a two-stage planetary gear set is established. For this model, an improved potential energy method is used to calculate the time-varying gear mesh stiffness considering the influence of different crack levels in the sun gear of the second stage. Then, several fault features are provided to assess the crack propagation levels based on the simulated signals. Afterwards, the change percentages of these statistical indicators are compared for evaluating the sensitivity of each fault feature. Finally, the actual vibration data collected from an industrial planetary gearbox with pitting and broken tooth damages are provided to validate the theoretical derivations.

Keywords:

Multistage compound planetary gear set；Nonlinear dynamic model；Time-varying mesh stiffness；Fault features selection.

下载地址：《Fault Status Assessment for Fault Diagnosis of a Multistage Planetary Gear Set Based on Dynamic Simulation and Experimental Analysis》