摘要
运动学支撑定位精度检测,采用激光散斑干涉法记录被测体特定平面的位移,以获得6自由度刚体位移分量。其图象处理技术是用细激光束对处理好的散斑图进行照射以获取图象(即杨氏条纹图),通过增强、滤波、提取条纹中心线等技术对获取的图象进行处理,提取出杨氏条纹图象在X、Y、Z三个方向的条纹间距,从而分析出被测物体特定平面内的位移信息,精度达到0.4μm。实验证明,该技术提高了运动学支撑定位检测精度。
The laser speckle interferometry is adopted to record the displacements of rigid body in the test of locating accuracy for kinematic support, thus, the six freedom divisions of displacements of rigid body. Its image processing techniques are that use thin laser to irradiate the speckle image processed, hereby, Youngs fringe image is obtained in computer. The fringe image is processed with serial image processing techniques as filter, intensity, extracting of fringe line of center, the spacing of fringe in X, Y and Z three-dimensional direction of Youngs fringe image are extracted. Then the displacement information of rigid body in specific flat surface are calculated, its accuracy error arrives at 0.4靘. The experimental result shows that the accuracy of locating test for kinematic support is improved with the serial techniques.
出处
《兵工自动化》
2002年第3期44-47,共4页
Ordnance Industry Automation
