High-precision pose measurement method in wind tunnels based on laser-aided vision technology

被引:23
作者
Liu Wei [1 ]
Ma Xin [1 ]
Li Xiao [1 ]
Chen Ling [1 ]
Zhang Yang [1 ]
Li Xiaodong [1 ]
Shang Zhiliang [1 ]
Jia Zhenyuan [1 ]
机构
[1] Dalian Univ Technol, Key Lab Precis & Nontradit Machining Technol, Minist Educ, Dalian 116024, Peoples R China
基金
中国国家自然科学基金;
关键词
High-speed motion; Machine vision; Pose measurement; Structured light; Wind tunnel; CAMERA; SYSTEM;
D O I
10.1016/j.cja.2015.05.009
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
The measurement of position and attitude parameters for the isolated target from a highspeed aircraft is a great challenge in the field of wind tunnel simulation technology. In this paper, firstly, an image acquisition method for small high-speed targets with multi-dimensional movement in wind tunnel environment is proposed based on laser-aided vision technology. Combining with the trajectory simulation of the isolated model, the reasonably distributed laser stripes and self-luminous markers are utilized to capture clear images of the object. Then, after image processing, feature extraction, stereo correspondence and reconstruction, three-dimensional information of laser stripes and self-luminous markers are calculated. Besides, a pose solution method based on projected laser stripes and self-luminous markers is proposed. Finally, simulation experiments on measuring the position and attitude of high-speed rolling targets are conducted, as well as accuracy verification experiments. Experimental results indicate that the proposed method is feasible and efficient for measuring the pose parameters of rolling targets in wind tunnels. (C) 2015 The Authors.
引用
收藏
页码:1121 / 1130
页数:10
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