Quick positioning and display method for key components in maintenance geometry model based on ontology

Abstract

The invention provides a quick positioning and a display method for key components in maintenance geometry model based on ontology. Firstly, a product CAD model is used as the information source, and some preprocessing is carried out to obtain and store the product assembly tree information and attribute information of each component. Simultaneously a corresponding ontology list is established as the terminology standard and reasoning standard. According to the established ontology, the attribute information contained in the CAD model is semantically labeled and corresponding to the assembly tree structure, and the annotation result is recorded into the semantic index information. Finally, the annotated semantic index information is retrieved by applying ontology and ontology reasoning method to obtain the assembly tree location of the target component. The 3D model of CAD is transformed into a lightweight model, and the corresponding relationship between the lightweight model and the original model is established through the assembly tree information. The lightweight model of transformation is applied to quick positioning and display. The quick positioning and the display method for key components in maintenance geometry model based on ontology provide a method of quick positioning of key components in to be maintained in the lightweight model of maintenance for digital maintenance.

Description

technical field [0001] The invention relates to a technology for fast positioning and displaying of key parts of a geometric model in the maintenance and repair process of complex products, and in particular to a method for fast positioning and display of key parts in the maintenance and repair of a geometric model based on an ontology. Background technique [0002] In the whole life cycle of complex products, the application of 3D model technology in the design and manufacturing stage has been widely used, while the application of technology in the maintenance and repair stage has just started, and the level is very limited. In this limited application of digital technology, most of the maintenance and repair functions are mainly aimed at operational fault diagnosis and general maintenance information management, while for maintenance processes, there is generally no 3D model for specific display, only a simple 2D schematic diagram, which is difficult to meet the requirement...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of rapid and automatic positioning and display of key components of the 3D model of the maintenance process for complex products, and proposes a rapid positioning and display method for key components of the 3D model of the maintenance process based on the ontology

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