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浏览/检索结果: 共15条,第1-10条 帮助

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Laboratory Measurements of the Relative Permeability of Coal: A Review 期刊论文  OAI收割
ENERGIES, 2020, 卷号: 13, 期号: 21, 页码: 24
作者:  
Shen, Shaicheng;  Fang, Zhiming;  Li, Xiaochun
  |  收藏  |  浏览/下载:30/0  |  提交时间:2021/05/25
Relative closeness ranking of Kalman filtering with multiple mismatched measurement noise covariances 期刊论文  OAI收割
IET CONTROL THEORY AND APPLICATIONS, 2018, 卷号: 12, 期号: 8, 页码: 1133-1140
作者:  
Shao, Teng;  Ge, Quanbo;  Duan, Zhansheng;  Yu, Junzhi
  |  收藏  |  浏览/下载:32/0  |  提交时间:2018/10/10
Research and Design of Automatic Detection Platform for Inner and Outer Rings of Bearings 会议论文  OAI收割
Huhhot, China, September 14-16, 2018
作者:  
Yang X(杨旭);  Wang XY(王信野);  Yan HX(闫宏旭);  Liu F(刘飞)
  |  收藏  |  浏览/下载:31/0  |  提交时间:2018/12/24
Design of Control System of Full-Automatic Detection Line for Inner and Outer Rings of Bearings 会议论文  OAI收割
Harbin, China, July 19-21, 2018
作者:  
Wang XY(王信野);  Yang X(杨旭);  Meng DP(孟大鹏);  Yan HX(闫宏旭)
  |  收藏  |  浏览/下载:79/0  |  提交时间:2018/12/24
Stochastic consensus of single-integrator multi-agent systems under relative state-dependent measurement noises and time delays 期刊论文  OAI收割
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL, 2017, 卷号: 27, 期号: 5, 页码: 860-872
作者:  
Djaidja, S.;  Wu, Q. H.;  Cheng, L.
收藏  |  浏览/下载:46/0  |  提交时间:2017/05/05
Experimental study of ionization of Ar by impact of anions 期刊论文  OAI收割
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2012, 卷号: 283, 页码: 35-39
作者:  
Zhao, Zilong;  Li, Junqin;  Zhang, Xuemei
  |  收藏  |  浏览/下载:31/0  |  提交时间:2018/07/05
Observation of total solar irradiance (EI CONFERENCE) 会议论文  OAI收割
2012 World Automation Congress, WAC 2012, June 24, 2012 - June 28, 2012, Puerto Vallarta, Mexico
作者:  
Fang W.;  Zhang H.;  Chen Y.;  Wang K.;  Zhang H.
收藏  |  浏览/下载:26/0  |  提交时间:2013/03/25
Design and fabrication of CGH for aspheric surface testing and its experimental comparison with null lens (EI CONFERENCE) 会议论文  OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China
作者:  
Zhao J.;  Zhang X.;  Zhang X.;  Zhang X.;  Li F.
收藏  |  浏览/下载:34/0  |  提交时间:2013/03/25
Computer-generated hologram (CGH) is an effective way to compensate wavefront in null test of aspheric surfaces and freeform surfaces. Our strategies of CGH design and fabrication for optical testing are presented  and an experiment demonstrating the compensation results of CGH and null lens is also reported. In order to design complex CGH  software was developed  with which we can design a CGH including three sections: main section for compensating wavefront in null test  alignment section for adjusting the relative position between CGH and interferometer  and fiducial section for projecting fiducial marks around the optics under test. The design result is represented in GDS II format file which could drive a laser-direct-writer- machine to fabricate a photomask. Then  a 1:1 replication process is applied to duplicate the patterns from photomask to a parallel optical substrate whose surface is error better than /60 rms. Finally  an off-axis aspheric surface was tested with CGH and null lens respectively. The test result with CGH (0.019rms) is almost the same as the result with null lens (0.020 rms). This experiment also demonstrated that fiducial marks projected by CGH can be used to guide the alignment of the optics and measurement of its off-axis distance. 2010 Copyright SPIE - The International Society for Optical Engineering.  
The experimental measurement of the relative biological effectiveness of carbon ions with different qualities 期刊论文  OAI收割
PLASMA SCIENCE & TECHNOLOGY, 2008, 卷号: 10, 期号: 3, 页码: 387-390
作者:  
Wang Jufang;  Li Wenjian
  |  收藏  |  浏览/下载:12/0  |  提交时间:2010/10/29
Annular sub-aperture stitching interferometry for testing of large asphreical surfaces (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging, ISPDI 2007: Optoelectronic System Design, Manufacturing, and Testings, September 9, 2007 - September 12, 2007, Beijing, China
作者:  
Zheng L.-G.;  Zhang X.-J.;  Deng W.-J.;  Wang X.-K.
收藏  |  浏览/下载:76/0  |  提交时间:2013/03/25
Annular subaperture stitching interferometric technology can test large-aperture  and the PV and RMS of residual error of the full aperture phase distribution is 0.027 and 0.0023  high numerical aperture aspheric surfaces with high resolution  the relative error of PV and RMS is -0.53% and -0.31%  respectively. The results conclude that this splicing model and algorithm are accurate and feasible. So it provides another quantitive measurement for test aspheric surfaces especially for large aperture aspheres besides null-compensation.  low cost and high efficiency without auxiliary null optics. In this paper  the basic principle and theory of the stitching method are introduced  the reasonable mathematical model and effective splicing algorithm are established based on simultaneous least-squares method and Zernike polynomial fitting. The translation errors are eliminated from each subaperture through the synthetical optimization stitching mode  it keeps the error from transmitting and accumulating. The numerical simulations have been carried on by this method. As results  the surface map of the full aperture after stitching is consistent to the input surface map  the difference of PV error and RMS error between them is -0.0074 and -0.00052 ( is 632.8nm)  respectively