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Optimization of Grasping Efficiency of a Robot Used for Sorting Construction and Demolition Waste 期刊论文  OAI收割
International Journal of Automation and Computing, 2020, 卷号: 17, 期号: 5, 页码: 691-700
作者:  
Yue-Dong Ku;  Jian-Hong Yang;  Huai-Ying Fang;  Wen Xiao;  Jiang-Teng Zhuang
  |  收藏  |  浏览/下载:18/0  |  提交时间:2021/02/22
Analysis of ground surface settlement induced by a large EPB shield tunnelling: a case study in Beijing, China 期刊论文  OAI收割
ENVIRONMENTAL EARTH SCIENCES, 2019, 卷号: 78, 期号: 20, 页码: -
作者:  
Cheng, HongZhan;  Chen, Jian;  Chen, GuoLiang
  |  收藏  |  浏览/下载:25/0  |  提交时间:2020/04/08
New progress and development of engineering blasting in China 会议论文  OAI收割
9th International Symposium on Rock Fragmentation by Blasting, FRAGBLAST 9, Granada, Spain, September 13, 2009 - September 17, 2009
作者:  
Wang XG;  Liu DS;  Zhou JH
收藏  |  浏览/下载:22/0  |  提交时间:2017/06/20
Design and tolerance analysis of compensator for high order aspheric surface testing (EI CONFERENCE) 会议论文  OAI收割
2009 International Conference on Optical Instruments and Technology - Optoelectronic Measurement Technology and Systems, October 19, 2009 - October 22, 2009, Shanghai, China
作者:  
Chen X.;  Liu W.;  Chen X.;  Chen X.
收藏  |  浏览/下载:29/0  |  提交时间:2013/03/25
High accuracy is required in surface testing of 90nm nodal point lithography projecting lens. By comparing various aspheric surface testing methods  the structure layout of the compensator is a meniscus positive lens combined with a Plano-convex positive lens. The design results indicate that: primary and high order aberrations are balanced well  we adopt Offner null compensator to test the aspheric surface in the point diffraction interferometer at last. In this paper  MTF exceeds diffraction limit  an Offner compensator is presented on the base of the third order aberration theory to test concave aspheric surface  root-mean-square (RMS) of wave front error /167. The F-number of the system can achieve F/1.64. By the analysis of the process of aspheric surface testing with the designed system  the optical construction parameters of which is determined by introducing equal-quantities spherical aberration to compensate all orders of aspheric coefficients. The field of view of the system is 0.02  a loosen distribution of the tolerance was presented based on the accuracy of measuring apparatus. 2009 SPIE.