Fault features analysis of a compound planetary gear set with damaged planet gears

作者：Li, Guoyan; Li, Fangyi^*; Liu, Haohua; Dong, Dehao

来源：Proceedings of the Institution of Mechanical Engineers - Part C: Journal of Mechanical Engineering Science , 2018, 232(9): 1586-1604.

DOI：10.1177/0954406217705906

• Compound planetary gear set
• nonlinear dynamic model
• time-varying mesh stiffness
• fault features
• damaged planet

The fault properties of compound planetary gear set are much more complicated than the simple planetary gear set. A damaged planet will induce two periodic transient impulses in the raw signals and generates modulation sidebands around the mesh harmonics. This paper aims to investigate the fault properties of a compound planetary gear set in damaged planet conditions. A dynamic model is proposed to simulate the vibration signals. The time interval between the fault-induced close impulses in the time domain is used as a significant feature to locate the faulty planet. Considering the phase relations, the time-varying mesh stiffness is obtained. Then, the fault properties are demonstrated in the simulation, and the theoretical derivations are experimentally verified.

• 出版日期2018-5
• 单位山东大学