Aiming at the failure problem of planetary transmission system due to the resonance in the process of actual application

by using 3D modeling software Pro/E a planetary transmission system entity model is established

the modal analysis of planetary transmission system is carried out by using Workbench

the inherent frequency and the vibration modes are obtained

and the vibration characteristic is analyzed.And through the research of sun gear floating and the influence of planet gear number on the vibration characteristics

further point out that the influence of planetary transmission system structure changes on vibration characteristics.The study of planetary transmission system design provides a basis for further improvement.