Fault features analysis of a compound planetary gear set with damaged planet gears. (May 2018)

• Record Type: Journal Article
• Authors: Li, Guoyan; Li, Fangyi; Liu, Haohua; Dong, Dehao
• Is Part Of: Proceedings of the Institution of Mechanical Engineers. Volume 232:Number 9(2018)
• Page Start: 1586
• Page End: 1604
• Publication Date: 2018-05
• Subjects: Compound planetary gear set -- nonlinear dynamic model -- time-varying mesh stiffness -- fault features -- damaged planet; Mechanical engineering -- Periodicals; 621.05
• DOI: 10.1177/0954406217705906
• Languages: English
• ISSNs: 0954-4062

Abstract

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.