个人信息
黄翔
招生学科专业:
机械工程 -- 【招收博士、硕士研究生】 -- 机电学院
航空宇航科学与技术 -- 【招收博士、硕士研究生】 -- 机电学院
机械 -- 【招收博士、硕士研究生】 -- 机电学院
联系方式:17749500871;13851538871 学位:工学博士学位

个人信息 Personal information

学历:南京航空航天大学 毕业院校:南京航空航天大学 所在单位:机电学院 办公地点:机电学院15-405 电子邮箱:

Uncertainties evaluation of coordinate transformation parameters in the large-scale measurement for aircraft assembly

点击次数: 所属单位:机电学院 发表刊物:SENSOR REVIEW 关键字:Uncertainty Aircraft assembly ERS points Deployment errors Large-scale metrology Transformation parameters 摘要:Purpose For the measurement of large-scale components in aircraft assembly, the evaluation of coordinate transformation parameters between the coordinate frames of individual measurement systems to the assembly frame is an essential task, which is usually completed by registration of the enhanced reference system (ERS) points. This paper aims to propose an analytical method to evaluate the uncertainties of transformation parameters considering both the measurement error and the deployment error of ERS points. Design/methodology/approach For each measuring station, the measured coordinates of ERS points are first roughly registered to the assembly coordinate system using the singular value decomposition method. Then, a linear transformation model considering the measurement error and deployment error of ERS points is developed, and the analytical solution of transformation parameters' uncertainties is derived. Moreover, the covariance matrix of each ERS points in the transformation evaluation is calculated based on a new uncertainty ellipsoid model and variance-covariance propagation law. Findings For the transformation of both single and multiple measuring stations, the derived uncertainties of transformation parameters by the proposed analytical method are identical to that obtained by the state-of-the-art iterative method, but the solution process is simpler, and the computation expenses are much less. Originality/value The proposed uncertainty evaluation method would be useful for in-site measurement and optimization of the configuration of ERS points in the design of fixture and large assembly field. It could also be applied to other registration applications with errors on both sides of registration points. ISSN号:0260-2288 是否译文: 发表时间:2018-01-01 合写作者:Deng, Zhengping,Li, Shuanggao 通讯作者:黄翔