NOVEL METHOD FOR ERROR ANALYSIS AND SELF-CALIBRATION OF LASER TRACKING MIRROR MECHANISM

查看全文 作　　者：OUYANG [1]Jianfei;LIU [2]Wanli;QU [2]Xinghua;YAN [1]Yonggang;WANG [3]Zhankui

机构地区：[1]Precision Engineenng Institute, Henan Polytechnic University, Jiaozuo 454003, China;[2]State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China;[3]Department of Mechanical and Electric Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China

出　　处：《Chinese Journal of Mechanical Engineering》索引2008年第21卷第4期,共6页

基　　金：National Natural Science Foundation of China (No. 50475038). 摘　　要：Laser tracking system(LTS)is an advanced device for large size 3D coordinates measuring with the advantages of broad range, high speed and high accuracy. However, its measuring accuracy is highly dominated by the geometric errors of the tracking mirror mechanism. Proper calibration of LTS is essential prior to the use of it for metrology. A kinematics model that describes not only the motion but also the geometric variations of LTS is developed. Through error analysis of the proposed model, it is claimed that gimbals axis misalignments and tracking mirror center off-set are the key contributors to measuring errors of LTS. A self-calibration method is presented of calibrating LTS with planar constraints. Various calibration strategies utilizing single-plane and multiple-plane constraints are proposed for different situations. For each calibration strategy, issues about the error parameter estimation of LTS are exploded to fred out in which conditions these parameters can be uniquely estimated. Moreover, these conditions reveal the applicability of the planar constraints to LTS self-calibration. Intensive studies have been made to check validity of the theoretical results. The results show that the measuring accuracy of LTS has increased by 5 times since this technique for calibration is used. 关键词：错误分析激光跟踪自我校准循迹反光镜

相关文献

参考文献（10）
引证文献（2）
耦合文献（16）

参考文献(10)

引证文献(2)

耦合文献(16)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

NOVEL METHOD FOR ERROR ANALYSIS AND SELF-CALIBRATION OF LASER TRACKING MIRROR MECHANISM

参考文献(10)

引证文献(2)

耦合文献(16)

用户提示