【摘要】 某大尺寸弹翼不对称度直接影响导弹飞行过程中的安全性和稳定性，需对其不对称度进行测量。弹翼不对称度激光视觉测量仪系统标定精度直接影响弹翼不对称度的测量精度。本文设计了一种弹翼的不对称度测量方法并研制了测量仪，提出一种无重叠视场下的多源数据信息融合的标定方法，实现测量坐标系的精确标定。首先，相机在预设各点采集图像获得各点位姿数据；针对z轴标定精度易受相机景深限制问题，提出一种激光光斑追踪与位移传感器测距相结合的辅助修正z轴位姿数据的方法，通过激光光斑位移特征分析获取平面坐标信息，结合位移传感器测距值构建三维空间约束。之后，通过采用岭回归算法对各轴初始位姿数据进行线性拟合，构建基向量；依据基变换理论与旋转平移变换推求测量坐标系与世界坐标系之间的位姿转换关系。最后，通过黑盒仿真实验与工程实验验证，黑盒仿真实验测量相对误差低于0.004%,在工程试验验证中，平均测量误差小于10μm,完全满足高精度装配的测量需求。更多还原

【Abstract】 The asymmetry degree of a large size wing directly affects the safety and stability of the missile during flight, so it is necessary to measure the asymmetry degree. The system calibration accuracy of the laser vision measuring instrument directly affects the measurement accuracy of missilewing asymmetry. In this paper, a method of measuring the asymmetry of the projectile wing is designed and the measuring instrument is developed. A calibration method of multi-source data information fusion under non-overlapping field of views is proposed to realize the accurate calibration of the measurement coordinate system. Firstly, the camera collected images at the preset points to obtain the pose data of each point. Aiming at the problem that the accuracy of z-axis calibration is easily limited by the depth of field of the camera, a method combining laser spot tracking and displacement sensor ranging was proposed to assist in correcting z-axis position and orientation data. The plane coordinate information was obtained by analyzing the displacement characteristics of the laser spot, and the three-dimensional space constraint was constructed by combining the displacement sensor ranging value. Then, the ridge regression algorithm is used to linearly fit the initial pose data of each axis to construct the basis vector. According to the basis transformation theory and rotation and translation transformation, the pose transformation relation between the measurement coordinate system and the world coordinate system is deduced. Finally, through the black-box simulation experiment and engineering experiment verification, the relative error of measurement in the black-box simulation experiment is less than 0.004%, and the average measurement error is less than 10 μm in the engineering test verification, which fully meets the measurement requirements of high-precision assembly.更多还原