多自由度AT行星齿轮机构结构综合和同构判别  

Structural Synthesis and Isomorphism Identification of Multi-DOF AT Planetary Gear Trains

作　　者：薛焕樟 Xue Huanzhang(Department of Intelligent Manufacturing,Zhaoqing Technician Institute,Zhaoqing 526060,China)

机构地区：[1]肇庆市技师学院智能制造系,广东肇庆526060

出　　处：《机械传动》2023年第2期42-52,共11页Journal of Mechanical Transmission

摘　　要：由于4~5自由度的AT行星齿轮机构方案数量规模过于庞大,造成优选时间过长。为了能胜任大规模AT结构方案的综合,提出基于字符串编码的构件综合和同构判别方法。根据行星齿轮机构各构件的类型特征定义构件的字符,再将AT结构转化为字符串;通过分析行星排字符串中制动构件和互连构件的特征,并利用组合原理设计合理的字符串综合算法,分别实现了对行星齿轮机构和AT结构的同构判别。在对AT结构进行综合的过程中,分别剔除不满足构件约束条件的行星齿轮机构字符串和AT结构字符串。通过5个算例验证了该方法的正确性和高效性。Due to the large scale of AT planetary gear trains(PGTs)schemes with 4-5 degrees of freedom,the optimization time is too long.In order to be qualified for large-scale AT structural schemes synthesis,a link synthesis and isomorphism identification method based on string encoding is proposed.The characters of the links are defined according to each link type of the PGT,and the AT structure is converted into a string.By analyzing the characteristics of the brake links and interconnection links in the planetary gear set string,and using the combination principle to design a reasonable string synthesis algorithm,the isomorphism identification of the PGTs and the AT structures are realized respectively.During the synthesis of the AT structures,the PGT strings and AT structure strings that do not satisfy the link constraints are eliminated separately.The correctness and efficiency of the method are verified by five examples.

关 键 词：行星齿轮机构 多自由度 结构综合 同构判别 字符串编码 

分 类 号：TH132.41[机械工程—机械制造及自动化]