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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11535400 B1

PDFFull Text
Date of Patent:
Dec. 27, 2022

Filed:

Feb. 07, 2021

Fairing skin repair method based on measured wing data

Applicant:

Nanjing University of Aeronautics and Astronautics, Jiangsu, CN;

Inventors:

Jun Wang, Jiangsu, CN;

Xiaoge He, Jiangsu, CN;

Yuanpeng Liu, Jiangsu, CN;

Yuan Zhang, Jiangsu, CN;

Assignee:

NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS, Nanjing, CN;

Attorney:
Primary Examiner:

Dakshesh D Parikh

Int. Cl.
CPC ...
B64F 5/40 (2017.01); G06T 7/33 (2017.01); G05B 19/4097 (2006.01); G06K 9/62 (2022.01); G06T 5/00 (2006.01); G06V 10/75 (2022.01); G06V 10/48 (2022.01); G06V 10/77 (2022.01);
U.S. Cl.
CPC ...
B64F 5/40 (2017.01); G05B 19/4097 (2013.01); G06K 9/622 (2013.01); G06K 9/6215 (2013.01); G06K 9/6247 (2013.01); G06T 5/002 (2013.01); G06T 7/33 (2017.01); G06V 10/48 (2022.01); G06V 10/758 (2022.01); G06V 10/77 (2022.01); G05B 2219/37558 (2013.01); G06T 2207/10028 (2013.01); G06T 2207/30108 (2013.01);
Abstract

A fairing skin repair method based on measured wing data includes fairing skin registration. Data set P1 through denoising and filtering wing point cloud data is reorganized to obtain a key point set P. A histogram feature descriptor in a normal direction of any key point in set P and a skin point cloud data Q is calculated. Euclidean distance between feature descriptors of two points is calculated through K-nearest neighbor algorithm, and points with high similarity are added into a set M. A clustering is performed on set M using a Hough voting algorithm to obtain a local point cloud set P' in set P. The method includes fairing skin repair. The boundary line of the point frame is projected onto Q, and a distance between a projection line on the point cloud and the boundary line is calculated to obtain an amount of skin to be repaired.

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