Single camera videogrammetry measurement method of angle of attack based on homography matrix

被引：0
|
作者：
Zhou R. [1 ]
Zhang Z. [1 ,2 ]
Yang Z. [1 ]
Huang X. [1 ]
机构：
[1] High Speed Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang
[2] College of Information Engineering, Southwest University of Science and Technology, Mianyang
来源：
Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica | 2019年 / 40卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Angle of attack; Homography matrix; Single camera; Videogrammetry measurement; Wind tunnel test;
D O I：
10.7527/S1000-6893.2019.22800
中图分类号：
学科分类号：
摘要：
Accurate measurement of the angle of attack of the model in wind tunnel test is one of the important ways to reduce the error of the drag coefficient. Therefore, this paper proposes a single camera videogrammetry measurement of angle of attack based on homography matrix. Using two homography matrices, the proposed method obtains the real-time pose of the camera and the coordinates of the reference mark points during the wind tunnel test, and applies the coordinate rotation relationship to measure the angle of attack test model. Numerical simulation results show that the deviation of the distance between the measuring mark points and test section wall is approximately linear with the measurement error of angle of attack. Therefore, this measurement error can be corrected relying on this feature when the marker points do not satisfy the coplanar condition. The static calibration and wind tunnel tests show that by correcting the system error, the accuracy of the measured angle of attack does not exceed 0.01°, and the precision is within 0.012°. The method introduced in the paper is easy to implement and the engineering practical value is huge. © 2019, Press of Chinese Journal of Aeronautics. All right reserved.
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  • [1] Zhang Z.Y., Yu B., Huang S.J., Et al., Videogrammetric measurement of attack angle and its precision investigation in wind tunnel tests, Journal of Experiments in Fluid Mechanics, 27, 1, pp. 88-92, (2013)
  • [2] Crawford B.L., Finley T.D., Improved correction system for vibration sensitive inertial angle of attack: AIAA-2000-0415, (2000)
  • [3] Hoang N.T., Barber K.M., Walker D., Design and development of an optical pitch sensor utilizing polarized infrared light: AIAA-1994-0734, (1994)
  • [4] Tang L., Yang Z.H., Xie Y., Et al., Application of Optotrak optical tracking measurement instrument in wind tunnel angle measurement, Ordnance Industry Automation, 34, 3, pp. 68-70, (2015)
  • [5] Jones T., Hoppe J., Comparison of angle of attack measurements for wind tunnel testing: AIAA-2001-0559, (2001)
  • [6] Mantik J., Quix H., Quest J., Enhancement of the stereo pattern tracking technique for model deformation assessment at ETW: AIAA-2013-0870, (2013)
  • [7] Graves S.S., Burner A.W., Development of an Intelligent Videogrammetric Wind Tunnel Measurement system, Proceedings of the International Society for Optical Engineering (SPIE), 4448, pp. 120-131, (2001)
  • [8] Burner A.W., Radeztsky R.H., Liu T.S., Videometric Applications in Wind tunnels, Proceedings of the International Society for Optical Engineering (SPIE), 3174, pp. 234-247, (1997)
  • [9] Kushner L.K., Schairer E.T., Heineck J.T., Et al., Model deformation and optical angle of attack measurement system in the NASA Ames Unitary Plan wind tunnel: AIAA-2017-1053, (2017)
  • [10] Zhang X.L., Jiang J.L., Jia Y.S., Et al., Videogrammetric application in wind tunnel model attitude measurement, Journal of Experiments in Fluid Mechanics, 19, 3, pp. 21-25, (2005)
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