摘要
根据考虑ERS点3维热变形的大尺寸测量场转站模型,推导出基于雅克比矩阵的转站参数线性化计算方法。通过分析转站过程中坐标变换雅克比矩阵的条件数,建立转站参数求解模型的量化指标。在考虑测量仪器测量误差的情况下建立了整个仿真流程,进行仿真实验。计算不同ERS点布局的情况下雅克比矩阵的条件数,通过仿真得到求解转站参数所需的迭代次数,从而得到量化评价ERS点布局策略的方法,为测量仪器转站时ERS点的布局方法提供指导。
According to the registration model of large-scale measuring field with the consideration of thermal deformation of ERS points in three dementions,the linearization calculation method of registration parameter based on Jacobian matrix was deduced. By the method of analyzing the Jacobian matrix of coordinate transformation during the registration,the quantitative indicator for solving method model of registration parameter was constructed. With the consideration of the mesurment erro of measuring equipment,the simulation process was built and the simulation experiment was conducted. The condition number of the Jacobian matrix under different distribution of ERS points was calculated,and the number of iterations was obtained accordingly through simulation. Finally the quantitative evaluation method of different ERS distribution strategy was obtained and construction for ERS distribution during the registration could be provided.
作者
常晏宁
王皓
孔令雨
唐楚禹
CHANG Yanning;WANG Hao;KONG Lingyu;TANG Chuyu(Shanghai Key laboratory of Digital Manufacture for Thin-walled Structures, Shanghai Jiao Tong University, Shanghai 200240, China;State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240, China)
出处
《机械设计与研究》
CSCD
北大核心
2018年第3期1-6,共6页
Machine Design And Research
基金
国家自然科学基金资助项目(51605300,11472172)
航天先进技术联合研究中心技术创新项目(USCAST2015-20)
上海市军民结合专项
关键词
ERS点
转站参数
雅克比矩阵
量化指标
仿真实验
ERS points
registration parameter
Jaeobian matrix
quantitative indicator
simulation experiment
