Multistage planetary gear transmission design method based on hypergraph expression

By using hypergraph representation and adjacency matrix transformation, the problems of low efficiency in configuration design and difficulty in structural analysis of multi-stage planetary gear transmission mechanisms are solved. This enables efficient configuration screening and analysis of high power density load-splitting transmission systems, and is applicable to complex mechanical transmission systems such as wind power speed increasers and aerospace transmissions.

CN122452064AActive Publication Date: 2026-07-24EAST CHINA JIAOTONG UNIVERSITY
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Patent Information

Application Number
CN202610911893.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-24
Publication Date
2026-07-24
Estimated Expiration
2046-06-24

AI Technical Summary

Technical Problem

Existing technologies are inefficient in designing configurations for multi-stage planetary gear transmission mechanisms, making it difficult to standardize the description of structural information and lack a unified adjacency matrix expression form. This leads to difficulties in complex configuration analysis and structural identification, making it hard to meet the demand for high power density output.

Method used

A multi-stage planetary gear transmission design method based on hypergraph representation is adopted. By establishing functional component identification rules and hypergraph mapping rules, a hypergraph model is constructed and converted into an adjacency matrix, realizing the digital description and automatic generation of multi-stage planetary gear transmission mechanism. The Hamming matrix method is combined to perform isomorphism discrimination, identify and remove duplicate configurations.

Benefits of technology

It improves the efficiency of configuration design and structural analysis capabilities of multi-stage planetary gear transmission mechanisms, can fully reflect the motion topology characteristics and multi-component coupling relationships of the mechanism, is suitable for high power density load splitting transmission systems, reduces reliance on manual experience, and improves configuration screening efficiency and topology discrimination accuracy.

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Abstract

The invention discloses a multi-stage planetary gear transmission design method based on hypergraph expression. The method comprises the following steps: establishing a functional component identification rule and a hypergraph mapping rule of a planetary gear transmission mechanism; establishing a motion relation graph of the planetary gear transmission mechanism; performing simplification processing on the hypergraph; establishing a multi-stage planetary gear transmission mechanism combination hypergraph model; converting the hypergraph model into a corresponding adjacent matrix; establishing a motion topology model of the multi-stage planetary gear transmission mechanism, and constructing a corresponding transmission ratio matrix; performing configuration generation on the multi-stage planetary gear transmission mechanism, and generating a corresponding configuration scheme of the multi-stage planetary gear transmission mechanism; carrying out isomorphic discrimination by adopting a Hamming matrix method, and identifying and removing repeated isomorphic configurations; and carrying out validity verification on the isomorphism judgment result, and obtaining an effective multi-stage planetary gear transmission mechanism configuration scheme meeting constraint conditions. According to the method, the configuration design efficiency and the structure analysis capability of the complex multi-stage planetary gear transmission mechanism can be improved.
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