Registration error analysis and evaluation in large-volume metrology system

The basic principle of coordinate system registration method was introduced in order to evaluate the measurement accuracy of large-scale metrology system in aircraft assembly. Then an explicit model was derived to mathematically describe the transformation parameter errors and the registration error. The model reveals the impacts of the layout of the enhanced reference system (ERS) points and the measurement errors of the ERS points of the laser tracker. The uncertainty evaluation of the transformation parameter errors and the estimation of the registration error were fulfilled based on the derived model. Monte-Carlo simulation was performed to simulate the coordinate system registration process. The proposed uncertainty evaluation method and the estimation method were validated. ©, 2015, Zhejiang University. All right reserved.