Spacecraft process knowledge pushing system and method based on model characteristics

A technology of process knowledge and spacecraft, applied in the field of digital manufacturing, can solve the problems of weak correlation of process knowledge, difficult retrieval, and weak pertinence, and achieve the goal of expanding the scope of knowledge retrieval, improving retrieval accuracy, and high retrieval efficiency. Effect

Active Publication Date: 2018-03-09
BEIJING SATELLITE MFG FACTORY
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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 requirement

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  • Spacecraft process knowledge pushing system and method based on model characteristics
  • Spacecraft process knowledge pushing system and method based on model characteristics
  • Spacecraft process knowledge pushing system and method based on model characteristics

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[0046] Example

[0047] like figure 1 As shown, a spacecraft process knowledge push system based on model features, the system includes a model feature extraction module 1, a model feature management module 2, a knowledge demand perception module 3, an ontology vocabulary management module 4, a process knowledge management module 5, a process Knowledge retrieval module 6, process knowledge push module 7, process planning module 8 and process knowledge display module 9;

[0048] The model feature extraction module 1 is used to automatically identify and extract model feature information from the three-dimensional design model of the spacecraft product; take the three-dimensional design model of the satellite assembly structure based on Proe as an example, the three-dimensional design model files include XX_0-0.ASM, XX_0 -0-1.prt,...,XX_0-0-n.prt(n>1), wherein, the model features extracted from the cabin assembly XX_0-0.ASM include: basic attributes include: model="XX" , code=...

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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 ...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06F17/30
CPCG06F16/951G06F30/15
Inventor 冯锦丹刘金山谭益梅王黎黎徐磊孙连胜
Owner BEIJING SATELLITE MFG FACTORY
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