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

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 imp...

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Vydáno v:Sensors (Basel, Switzerland) Ročník 14; číslo 12; s. 23933 - 23953
Hlavní autoři: Jia, Zhenyuan, Ma, Xin, Liu, Wei, Lu, Wenbo, Li, Xiao, Chen, Ling, Wang, Zhengqu, Cui, Xiaochun
Médium: Journal Article
Jazyk:angličtina
Vydáno: Switzerland MDPI AG 12.12.2014
MDPI
Témata:
Aircraft
Artificial Intelligence
Cooperation
Diagnostic systems
Experiments
High speed
high-speed motion
Humans
Image acquisition
machine vision
Markers
Measurement methods
pose measurement
Rolling motion
Sensors
Signal-To-Noise Ratio
Supersonic wind tunnels
Wind
wind tunnel
Wind tunnel testing
Wind tunnels
China
ISSN:1424-8220, 1424-8220
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Shrnutí: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°.
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External Editor: Vittorio M.N. Passaro
ISSN:1424-8220
1424-8220
DOI:10.3390/s141223933