Body based sub assembly identification method

A technology of sub-assembly and identification method, applied in reasoning methods, instruments, manufacturing computing systems, etc., can solve problems such as combinatorial explosions, achieve the effects of reducing the scale of problems, enhancing description capabilities, and ensuring portability and scalability

Active Publication Date: 2016-12-07
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is the problem of "combination explosion" in the assembly sequence planning method of the existing assembly sequence when complex products are assembled, and an ontology-based sub-assembly recognition method is provided

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Embodiment Construction

[0024] An ontology-based subassembly recognition method, such as figure 1 shown, including the following steps:

[0025] Phase 1. The construction of ontology knowledge base representation framework and the construction of semantic reasoning rule base:

[0026] Step A. Construct the corresponding ontology knowledge base according to the assembly domain knowledge framework, and the attribute relationship between classes in the ontology provides a consistent description of the domain knowledge.

[0027] Step A1. According to the assembly domain knowledge, classes and class relationships in the process of ontology construction reflect the types of main description concepts and the containment relationship (hierarchical relationship) between concepts. Classes are mainly divided into two categories: one is physical objects, and its sub-categories mainly include parts, components, sub-assemblies, etc.; the other is feature classes, and its sub-categories mainly include geometric fe...

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Abstract

The invention discloses a body based sub assembly identification method. A body knowledge framework is constructed for complex assembling by utilizing the body, implicit knowledge is inferred according to explicit knowledge, an assembling information knowledge base is developed, and a sub assembly is identified aimed at a rigid connection structure by combining a language rule base of semantic network rules. According to the invention, the consistent knowledge description framework in the assembling field is provided between heterogeneous systems, the assembling structure in the sub assembly identification level is structured, the scale of plan problems of the assembling sequence is reduced, and the assembling and manufacturing efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of assembly sequence planning, in particular to an ontology-based sub-assembly recognition method. Background technique [0002] Assembly Sequence Planning (Assembly Sequence Planning, referred to as ASP) is the core link in the product manufacturing process, and the scientificity of the assembly sequence determines the assembly quality and product performance. For the production and manufacture of large-scale products, an assembly sequence with excellent performance will shorten the production cycle of the product, reduce the production cost of the product, and improve the quality and performance of the product. However, for the assembly of complex products with a large number of parts, the traditional assembly sequence planning methods such as priority constraint method and cut set disassembly method inevitably have the problem of "combinatorial explosion". Contents of the invention [0003] The technic...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/04G06N5/04
CPCY02P90/30G06Q50/04G06N5/04
Inventor 常亮暴雨欣古天龙袁文兵闵丰徐周波
Owner GUILIN UNIV OF ELECTRONIC TECH
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