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Sensors 2014, 14(12), 23933-23953; doi:10.3390/s141223933

Pose Measurement Method and Experiments for High-Speed Rolling Targets in a Wind Tunnel

1
Key Laboratory for Precision and Non-Traditional Machining Technology of the Ministry of Education, Dalian University of Technology, Dalian 116024, China
2
AVIC Aerodynamics Research Institute, Shenyang 116024, China
*
Author to whom correspondence should be addressed.
Received: 28 September 2014 / Revised: 1 December 2014 / Accepted: 5 December 2014 / Published: 12 December 2014
(This article belongs to the Section Physical Sensors)
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Abstract

High-precision wind tunnel simulation tests play an important role in aircraft design and manufacture. In this study, a high-speed pose vision measurement method is proposed for high-speed and rolling targets in a supersonic wind tunnel. To obtain images with high signal-to-noise ratio and avoid impacts on the aerodynamic shape of the rolling targets, a high-speed image acquisition method based on ultrathin retro-reflection markers is presented. Since markers are small-sized and some of them may be lost when the target is rolling, a novel markers layout with which markers are distributed evenly on the surface is proposed based on a spatial coding method to achieve highly accurate pose information. Additionally, a pose acquisition is carried out according to the mentioned markers layout after removing mismatching points by Case Deletion Diagnostics. Finally, experiments on measuring the pose parameters of high-speed targets in the laboratory and in a supersonic wind tunnel are conducted to verify the feasibility and effectiveness of the proposed method. Experimental results indicate that the position measurement precision is less than 0.16 mm, the pitching and yaw angle precision less than 0.132° and the roll angle precision 0.712°. View Full-Text
Keywords: machine vision; pose measurement; high-speed motion; wind tunnel machine vision; pose measurement; high-speed motion; wind tunnel
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Jia, Z.; Ma, X.; Liu, W.; Lu, W.; Li, X.; Chen, L.; Wang, Z.; Cui, X. Pose Measurement Method and Experiments for High-Speed Rolling Targets in a Wind Tunnel. Sensors 2014, 14, 23933-23953.

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