Rotating mechanical equipment virtual assembly model and method based on context awareness

A technology for rotating mechanical equipment and virtual assembly, which is applied in design optimization/simulation, special data processing applications, instruments, etc., and can solve problems such as difficulty in determining the density radius and large computational load of hierarchical clustering algorithms

Inactive Publication Date: 2016-08-17
HOHAI UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The density-based clustering algorithm determines the cluster center by calculating the density of all sample points, but there is a problem that the density radius is difficult to determine
Hierarchical clustering initially re

Method used

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  • Rotating mechanical equipment virtual assembly model and method based on context awareness
  • Rotating mechanical equipment virtual assembly model and method based on context awareness
  • Rotating mechanical equipment virtual assembly model and method based on context awareness

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Embodiment

[0133] For the application of the assembly model of the present invention, the following describes the assembly process of parts as an example, which specifically includes the following steps:

[0134] Step A: Construct various part models required by the virtual assembly task, establish a three-dimensional model of the part, and calibrate the coordinate set of the feature points that describe the feature of the part;

[0135] Step B: Construct a virtual assembly model, and establish a virtual assembly model according to the features of the part, the parameters of the features and the assembly process; the following example shows a virtual assembly model:

[0136] Component 1 ={{trans-x,trans-y,trans-z},{Part 1 }}

[0137] ...

[0138] Component 7 ={{trans-x,trans-y,trans-z},{Part 7 }}

[0139] Part 1 ={Runner body shell,[Feature1,Feature 2 ....Feature 16 ]}

[0140] Part 2 ={paddle 1,[Feature 17 ,Feature 18 ,Feature 19 }

[0141] ...

[0142] Part 6 ={Under the rack,[Feature 29 ,Feature 30...

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Abstract

The invention discloses a rotating mechanical equipment virtual assembly model and method based on context awareness. A virtual assembly task is decomposed into an assembly knowledge layer, an assembly decision-making layer and a user control layer. The layers are endowed with different responsibilities. The virtual assembly model is defined for the assembly knowledge layer for containing assembly knowledge and assembly semantics to achieve contextualization of virtual assembly. Each part of the decision-making layer is regarded as an independent Agent, communication templates and decision-making rules between the Agents are defined according to the characteristics of the virtual assembly process, and user guide regularization is achieved. Through an offline clustering algorithm, the position and orientation of a user under a specific assembly situation are predicted, and time spent on adjusting a camera by the user is shortened. Compared with an existing assembly sensing technology, the model and method have the advantages that the assembly model is low in weight, interaction intelligence is achieved, and the interaction efficiency is high, and the assembly process can be customized to guide user operation.

Description

Technical field [0001] The invention relates to the technical field of virtual assembly simulation of large-scale rotating machinery equipment, in particular to a virtual assembly model and assembly method of rotating machinery equipment based on context perception. Background technique [0002] Virtual reality technology has the characteristics of immersion, interactivity and imagination. Virtual assembly technology is a typical application of virtual reality technology, which is widely used in product design verification and computer-aided assembly planning. Virtual perception technology is an important part of the virtual assembly system, which can reduce the user's cognitive burden on virtual scene information, and interact with the three-dimensional scene accurately and conveniently in the virtual scene. [0003] The existing virtual assembly perception mechanisms are commonly used: geometric constraints for feature matching and semantic constraints for task guidance. The ge...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 刘惠义张加雪钱福军宋晨郑源赵林章李频孟志伟樊锦川钱华清
Owner HOHAI UNIV
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