Based on the basic concept of transformed mechanism, transmission ratio, moment and efficiency of closeddifferential train, multiple freedom train and multiple train are analysed in this thesis.
本文应用转化机构的基本概念分析了封闭式差动轮系，多自由度轮系和多重轮系的传动比、力矩和效率。
2
Theaction of the Closed system, the phenomena of the split flow of power and the force in the closed type of differential gear train have been demonstrated.
对封闭式差动轮系进行了受力分析，揭示了封闭系统所起的作用以及轮系中的功率分流和力分流的现象。
3
About the problem how to calculate efficiency of differential gear train, in this paper, there is a new idea of "extending a differential gear train to an equivalent closed planetary gear train".