an outer gear that revolves about a central sun gear of an epicyclic train

a permanent magnetic epicyclic gear drive was presented, and its geometry and kinematics were analysed by applying the principles of epicyclic gear drive and electromagnetics integratively.

综合应用行星齿轮传动原理和电磁学原理，对永磁行星齿轮传动进行了几何学和运动学的分析。

the graph theory method for solving the electric net problem is suggested, which can be used in the graph theory model for epicyclic gear trains research.

认识到电网与轮系同属于物理系统，提出了解决电网络问题的图论方法可应用于轮系系统化研究的图论模型，并从理论上说明了拓扑图满足基尔霍夫定律。

the algorithm has great useful value for deciding the rationality of the structure of closed epicyclic gear train.

对设计封闭式周转轮系的结构方便实用。

the epicyclic gear train is connected with the erection seat through the skip key at the internal spline of the sun gear via an internal gear ring, an epicyclic gear and a sun gear.

行星轮系由内齿轮圈，行星齿轮，中心齿轮，在中心齿轮的内花键经跳健与装置座连接。

an epicyclic gear system (34) is attached to the output shaft (33) of the motor, to produce an output of reduced rotational speed.

行星齿轮系统（34）与马达的输出轴（33）相连，以产生转速降低的输出。

in this paper, a. new algorithm substituting an optimized round arc for the outline of tooth curve of an epicyclic gear tooth with long amplitude is discussed.

本文提出了用最优化圆弧代替长幅外摆线轮齿廓曲线的一种新型算法。

it is difficult and complicated to analyze the power-flow of the complex epicyclic gear trains and compute their transmission ratio and meshing efficiency.

目前，复杂周转轮系的功率流分析、传动比和啮合效率的计算既困难又繁复，而应用离散分析法可以改变这一局面。

a unified formula is derived for efficiency of h closed epicyclic gear train.

并在此基础上，推导出h封闭式周转轮系的效率计算的统一公式；

first, a dynamic model of the closed epicyclic gear trains, which is suitable to transmitting matrix, is established.

提出了考虑并联分支结构的适用于传递矩阵法的封闭周转轮系动力学分析模型。

this method is concise and intuitional for assembling gear trains. so the design and analysis of the closed epicyclic gear trains will not be difficult any longer.

这种方法简明直观，使封闭式周转轮系的设计和功率流分析不再困难。

study on the new inner planar moving spur gear typed epicyclic gear transmission with few teeth difference;

介绍一种新型斜盘式锥齿少齿差行星传动的传动比、角速度与角加速度等分析计算 。

teh repot relative failure analyzed epicyclic gear of early serious failure make use of macrographic examination and micrographic observation and advanced correct ways.

对早期严重失效的行星齿轮进行宏观和微观组织检测对比分析，提出改进措施。