仕様書からMBSE要求図を自動生成する技術の開発

抄録

In recent years MBSE (Model Based Systems Engineering) has gained popularity as a useful methodology for overviewing the whole structure, functionality and requirements of products and identifying the impact range of design changes. However, construction of system models for MBSE is time-consuming, which prohibited the usage of MBSE in actual product design scenes. Our goal is to reduce human effort in constructing MBSE models by automatically generating SysML (Systems Modelling Language) diagrams from design documents. A combination of NLP (Natural Language Processing) technology BERT (Bidirectional Encoder Representations from Transformers) and rule-based selection is adopted to extract requirements information from design documents. Open-source software PlantUML is used to generate requirement diagrams from text scripts. We applied the technology to design documents of real rolling stock products and verified that the generated requirement diagrams can reproduce over 70% of the design requirements.