Spacecraft process knowledge pushing system and method based on model characteristics

Abstract

The invention relates to a spacecraft process knowledge pushing system and method based on model characteristics and belongs to the technical field of digital manufacturing. In the three-dimensional process design process with a three-dimensional design model as the core, the perception range of knowledge demands is extended to three-dimensional model characteristics of model products, on the other hand, business process major task level extension is detailed to knowledge demand perception for process description content, knowledge item retrieval is performed through ontological vocabulary matching, and the retrieval accuracy is effectively improved. The association relations between ontological vocabularies in the process design field and knowledge items are labeled on the basis of knowledge item labels of ontological vocabularies, so that the higher retrieval efficiency is guaranteed while the knowledge retrieval range is extended. Knowledge pushing tests with the data scale of 10,000 or above prove that the system has the knowledge recall ratio up to 70% and the precision ratio up to 80%.

Description

technical field [0001] The invention relates to a model feature-based spacecraft process knowledge push system and method, belonging to the technical field of digital manufacturing. Background technique [0002] In the field of spacecraft digital manufacturing technology, the existing process preparation methods have problems such as being greatly affected by human factors and low process design efficiency. Reuse of process knowledge is one of the effective ways to solve the problem of low efficiency of process compilation. In order to ensure the high quality and high precision of aerospace model products, the requirements for refinement and quantification of process content are getting higher and higher. Therefore, the reuse granularity of process knowledge is also becoming more and more refined, and the requirements for ease of reuse and high efficiency are also increasing. higher. The traditional method of reusing process knowledge is that in the early stage of process ...

AI Technical Summary

Problems solved by technology

[0012] The technical solution problem of the present invention is: to overcome the deficiencies in the prior art, propose a kind of spacecraft process knowledge push system and method based on model characteristics, this system and method are aimed at the characteristics of single-piece, small-batch, multi-variety spacecraft products, Facing the process knowledge requirements of various business details in spacecraft 3D process design, a spacecraft process knowledge push system and method based on model features is proposed to solve the problem of weak correlation between process knowledge, high retrieval difficulty, low efficiency, and business-oriented The knowledge push granularity of the process is too coarse and the pertinence is not strong

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