The structural characteristic of a spindle-set series few teeth difference epicyclic gear transmission system is expounded
the multi-input or multi-output transmission characteristic and the velocity ratiosare.For demonstrating the systemic transmission characteristic
the motion simulation and results analysis to every input-output type are realized based on ADAMS platform under combining with three-mensional simulation model in Unigraphic.The simulation results are in accord with the theoretical analysis ones.The results also show that it is practical to the new system kinematics analysis through the virtual prototype.