For automobile wheel planetary gear system noise and vibration problems in the process of moving due to the deterioration caused by the support conditions

considering the concept of displacement deformation bearing operation

based on the introduction of coincidence degree pressure angle and change over time

the establishment of a fixed ring gear

sun gear and the bracket are power input

output wheel planetary gear system dynamic model to study the coincidence degree pressure angle and change over time

and the two kinetic constants for the model in response to changes in case law.The results show that coincidence degree

pressure angle and related numerical relationship can be established separately with time

the sun gear and the planetary gear pressure angle and contact ratio show fluctuations over time

in the state of the smaller bearing stiffness

deformation of the gear mesh frequency components exist in many aspects of the dynamic response

the planetary gear assembly and the angle of overlap of the pressure change over time than the pressure in the conditions of dynamic radial angle and a constant degree of overlap when the displacement is large

the radial displacement of the sun wheel constant conditions is approximately linear.