摘要
尾旋是飞机在失速时的一种复杂而危险的非正常飞行状态;研究飞机尾旋及改出特性的常用方法是立式风洞尾旋试验,该方法具有费用低、周期短等优点;为解决试验中模型姿态的测量问题,采用两台CCD摄像机等设备构建了一套立体视觉测量系统,并通过开展空间直角坐标系转换和相关图像处理算法研究,获得飞机模型表面特征标记点的空间三维参数,实现了对尾旋模型的姿态测量;试验结果表明,该技术具有非接触,识别率高和使用灵活的特点,姿态角测量精度达到0.1°。
Spin is a kind of complicated, dangerous and abnormal flying state when airplane stalls in the air. Spin and recovery research is usually done in vertical wind tunnel test, which has the advantages of love expenses, short period and so on. In order to solve the attitude measurement of airplane, a set of measurement system based on stereo vision principle is designed and established. The 3D parameter is gained by the 2D coordinates of images taken by the two cameras, and the attitude measurement is realized by the method of coordinates transfer and correlative digital image processing algorithm. The test results show that the technology has the features such as： non contact, high recognition rate and flexible. The measurement accuracy of attitude angle reaches 0.1.
出处
《计算机测量与控制》
CSCD
北大核心
2011年第11期2646-2648,共3页
Computer Measurement &Control
基金
总装备部气动预研基金项目资助(513130402)
关键词
立体视觉
尾旋
坐标系转换
图像处理
stereo vision
spin
coordinates transfer
digital image processing
