Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A Registration Method of Aircraft C-Beam Based on Local Invariance

An aircraft and registration technology, which is applied in graphics and image conversion, image analysis, image enhancement, etc., to achieve the effects of ensuring registration accuracy and method reliability, solving technical problems, and high application value

Active Publication Date: 2020-12-15
南京耘瞳科技有限公司
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through the effective fusion of the three methods, the success rate and accuracy of the registration between the actual measurement data of the deformed aircraft C-beam and the standard digital-analog inspection have been greatly improved, and the detection of deformed C-beams in the field of aviation manufacturing has been solved. previous registration problem

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Registration Method of Aircraft C-Beam Based on Local Invariance
  • A Registration Method of Aircraft C-Beam Based on Local Invariance
  • A Registration Method of Aircraft C-Beam Based on Local Invariance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0050] combine figure 1 , the present invention proposes a local non-deformable aircraft C-beam registration method, which is especially suitable for deformed aircraft C-beam workpieces. The registration method includes:

[0051] S1, obtain the measured point cloud data of the aircraft C-beam.

[0052] S2, use the fast point feature histogram feature description method to perform rough registration on the C-beam digital model and the measured point cloud data.

[0053] S3, performing segmentation processing and plane extraction on the measured point cloud data after rough registration, dividing the C-beam into three planes, and determining the bottom surface of the C-beam from them.

[0054] S4, using the bottom surface of the C-beam as a constraint for registration with the digital model of the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an aircraft C-shaped beam registration method based on local invariance. The method comprises the following steps: acquiring actual measurement point cloud data of an aircraftC-shaped beam; carrying out coarse registration on the C-shaped beam digital-analog and actual measurement point cloud data by utilizing a rapid point feature histogram feature description method; carrying out segmentation processing and plane extraction on the roughly registered actual measurement point cloud data, segmenting the C-shaped beam into three planes, and judging the bottom surface ofthe C-shaped beam from the three planes; taking the bottom surface of the C-shaped beam as a constraint of C-shaped beam digital-analog registration, carrying out fine registration by adopting part ofpoint cloud data of the bottom surface of the C-shaped beam and the C-shaped beam digital-analog registration, and calculating to obtain a transformation matrix of actually measured point cloud dataof the bottom surface of the C-shaped beam and the C-shaped beam digital-analog registration; and performing position transformation on the roughly registered aircraft C-shaped beam actual measurementpoint cloud data by adopting the transformation matrix to obtain a final registration result. According to the method, the success rate and the accuracy of registration of the airplane C-shaped beamactual measurement data and the standard digital-analog before detection under the deformation condition are greatly improved.

Description

technical field [0001] The invention relates to the technical field of precision machining and detection of workpieces in the aviation manufacturing industry, in particular to an aircraft C-beam registration method based on local non-deformation. Background technique [0002] With the wide application of composite materials in the field of aircraft manufacturing, the material of some aircraft load-bearing components has changed from metal materials to composite materials. This development trend has become one of the important directions for the technological upgrading of the aviation manufacturing industry in the future. During the development of new aircraft in my country, composite C-beams have gradually become the preferred structure for design. Its molding and processing have gone through a series of complicated processes, and many uncontrollable or unpredictable changes have been encountered in these processes. In order to make it meet the requirements of service perfo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/33G06T7/11G06T5/40G06T3/60
CPCG06T3/60G06T5/40G06T2207/10028G06T7/11G06T7/33G06T7/344
Inventor 汪俊曹涛谢乾徐旭
Owner 南京耘瞳科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com