二自由度行星变速箱最佳方案的选择方法

Selection Method of Optimum Scheme for Freedom Planetary-gearbox of Two Degrees of Freedom

利用计算机选择二自由度行星变速箱的最佳方案，首先将轮系信息化，用数码的型式表示轮系中各基本构件；对构件进行分析、计算，对满足构件完整性的变速箱简图符号按离合器传递扭矩最小的原则确定离合器的安装位置，对所有这样的简图符号计算各档时各构件的转速、内力矩及各档效率；得到满足技术要求的一个或几个变速箱方案简图符号；并根据这些符号画出传动简图，由设计人员从结构和工艺角度选择一最佳方案．编制相应程序，经实例证明。

For choosing optimum scheme of planetary-gearbox of two degrees of freedom using computer,the train must be converted to number codes indicating fundamental components of gearbox system. Based on the analysis and synthesis of the components,if schematic diagram symbols of the gearbox meet integrity, determines a installating place of clutch according to a principle that minimum torque is transmited, else eliminates the schematic diagram symbols.Then calculates rotational speed,internal torque and efficiency of all the components in all gears.Finally,we can get one or a few schematic diagram symbols of gear box,designer can choose a optimum scheme according to structure and process.At the same time,a program scheme and an example are given as well.The applications prove that this algorithm is better than previous ones in design speed and quality.