Research on Dynamic Characteristics of Planetary Gear Sets

The torsional vibration model of 2K-H type of planetary gear sets was developed based on the Lagrange equations.Then complex dynamic model was developed, in which the system coordinated rotate with the carrier.In the model, each component has one torsional degree of freedom and two translation degree of freedom.The dynamic models of the compound planetary gear set of Ravingneaux type were developed to predict the free vibration characteristics under different kinematic configurations resulting in different speed ratios.Making use of the functions in MATLAB, the analysis software(TVLab) was built based on the above research.Then the software was tested with the instances of compound planetary gear set of Ravingneaux type.The results show that the software is stable and efficient as an analysis tool of planetary gear sets.