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针对某型叉耳式翼身对接飞机在外场拆卸重装等特殊环境下,激光跟踪仪因现场环境等原因难以放置到满足测量精度要求的位置上进行直接测量的问题,提出一种基于视觉的直接测量方法。并搭建出该测量系统的模型,分析建立视觉测量系统所涉及到的关键技术,同时给出一种基于弧段组合的椭圆检测方法。最终通过模拟叉耳孔对接测量试验验证该方法的可行性。试验结果表明叉耳孔轴线间隙距离测量精度可达0.03mm,轴线角度测量精度达到0.025°,满足实际对接测量要求。
Aiming at the problem that some type of prong-type wing-body docking aircraft is disassembled and reassembled in the outfield, the laser tracker can not be placed directly to meet the requirement of measurement accuracy due to the scene environment and other problems. A visual Direct measurement method. The model of this measurement system is established, and the key technologies involved in establishing the visual measurement system are analyzed. At the same time, an ellipse detection method based on arc segment combination is given. Finally, the feasibility of this method is verified by simulating the test of fork prick-hole docking test. The experimental results show that the accuracy of the axial distance of the fork ear hole can reach 0.03mm and the accuracy of the axis angle can reach 0.025 °, which meets the requirements of actual docking measurement.