Assembly Information Model Based on Knowledge Graph

doi:10.1007/s12204-020-2179-y

Abstract

Abstract: There are heterogeneous problems between the CAD model and the assembly process document. In
the planning stage of assembly process, these heterogeneous problems can decrease the efficiency of information
interaction. Based on knowledge graph, this paper proposes an assembly information model (KGAM) to integrate
geometric information from CAD model, non-geometric information and semantic information from assembly
process document. KGAM describes the integrated assembly process information as a knowledge graph in the
form of “entity-relationship-entity” and “entity-attribute-value”, which can improve the efficiency of information
interaction. Taking the trial assembly stage of a certain type of aero-engine compressor rotor component as an
example, KGAM is used to get its assembly process knowledge graph. The trial data show the query and update
rate of assembly attribute information is improved by more than once. And the query and update rate of assembly
semantic information is improved by more than twice. In conclusion, KGAM can solve the heterogeneous problems
between the CAD model and the assembly process document and improve the information interaction efficiency.

Key words: knowledge graph| assembly process| information model| integrating

摘要： There are heterogeneous problems between the CAD model and the assembly process document. In
the planning stage of assembly process, these heterogeneous problems can decrease the efficiency of information
interaction. Based on knowledge graph, this paper proposes an assembly information model (KGAM) to integrate
geometric information from CAD model, non-geometric information and semantic information from assembly
process document. KGAM describes the integrated assembly process information as a knowledge graph in the
form of “entity-relationship-entity” and “entity-attribute-value”, which can improve the efficiency of information
interaction. Taking the trial assembly stage of a certain type of aero-engine compressor rotor component as an
example, KGAM is used to get its assembly process knowledge graph. The trial data show the query and update
rate of assembly attribute information is improved by more than once. And the query and update rate of assembly
semantic information is improved by more than twice. In conclusion, KGAM can solve the heterogeneous problems
between the CAD model and the assembly process document and improve the information interaction efficiency.

关键词: knowledge graph| assembly process| information model| integrating

CLC Number:

TP 391

CHEN Zhiyu, BAO Jinsong, ZHENG Xiaohu, LIU Tianyuan . Assembly Information Model Based on Knowledge Graph[J]. J Shanghai Jiaotong Univ Sci, 2020, 25(5): 578-588.

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