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• 长春光学精密机械与物... [1]
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• OAI收割 [13]

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• 期刊论文 [10]
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• 2017 [1]
• 2012 [1]
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浏览/检索结果: 共13条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Program in space detection of gravitational wave in Chinese Academy of Sciences 会议论文  OAI收割 Zurich, Switzerland, September 5, 2016 - September 9, 2016 作者:  Jin G(靳刚)   |  收藏  |  浏览/下载：24/0  |  提交时间：2018/11/08 Gravitational effects  Signal detection  Chinese Academy of Sciences  Gravitational  wave detection  Mission design  Road  maps  Space detection  Technological development  Working groups   Self-maps of p-local infinite projective spaces 期刊论文  OAI收割 SCIENCE CHINA-MATHEMATICS, 2012, 卷号: 55, 期号: 4, 页码: 739-744 作者:  Lin XianZu   |  收藏  |  浏览/下载：13/0  |  提交时间：2021/01/14 COMPACT GROUPS  CLASSIFICATION  OPERATIONS  infinite projective space  self-map  integer-valued polynomial   Design of motion compensation mechanism of satellite remote sensing camera (EI CONFERENCE) 会议论文  OAI收割 International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China Gu S.; Yan Y.; Xu K.; Jin G. 收藏  |  浏览/下载：47/0  |  提交时间：2013/03/25 With the development of aerospace remote sensing technology  the ground resolution of remote sensing camera enhances continuously. Since there is relative motion between camera and ground target when taking pictures  the target image recorded in recording media is moved and blurred. In order to enhance the imaging quality and resolution of the camera  the image motion had to be compensated. In order to abate the effect of image motion to image quality of space camera and improve the resolution of the camera  the compensation method of image motion to space camera is researched. First  the reason of producing drift angle and adjustment principle are analyzed in this paper. This paper introduce the composition and transmission principle of image motion compensation mechanism. Second  the system adopts 80C31 as controller of drift angle  and adopts stepping motor for actuators  and adopts absolute photoelectric encoder as the drift Angle measuring element. Then the control mathematical model of the image motion compensation mechanism are deduced  and it achieve the closed-loop control of the drift angle position. At the last  this paper analyses the transmission precision of the mechanism. Through the experiment  we measured the actual precision of the image motion compensation mechanism  and compared with the theoretical analysis. There are two major contributions in this paper. First  the traditional image motion compensation mechanism is big volume and quality heavy. This has not fit for the development trend of space camera miniaturization and lightweight. But if reduce the volume and quality of mechanism  it will bring adverse effects for the precision and stiffness of mechanism. For this problem  This paper designed a image motion compensation that have some advantages such as small size  light weight at the same time  high precision  stiffness and so on. This image motion compensation can be applicable to the small optics cameras with high resolution. Second  the traditional mechanism control need to corrected  fitting and iterative for the control formula of mechanism. Only in this way  we can get the optimal control mathematical model. This paper has high precision of the control formula derived. It can achieve the high precision control without fitting  It also simplify the difficulty of control mathematical model establishment. This paper designed the range of adjusting of image motion compensation mechanism between -5 +5. Based on choosing-5  -4  -3  -2  -1  0  +1  +2  +3  +4  +4 as the expectation value of the imaginary drift angle  we get ten groups of the fact data in adjusting drift angle measured. The test results show that the precision of the drift angle control system can be achieved in 1. It can meet the system requirements that the precision of the control system is less than 3'  and it can achieve the high-precision image motion compensation. 2011 SPIE.   Structural analysis of multiphase La1-xSrxCo 1-xFexO3-δ 会议论文  OAI收割 1st Annual Meeting on Testing and Evaluation of Inorganic Materials, Nanchang, China, APR 28-30, 2010 作者:  Gu YJ;  Yang ZN;  Chen YB;  Liu HQ;  Wu HK 收藏  |  浏览/下载：29/0  |  提交时间：2013/02/26 Materials testing  Rietveld method  Sol-gel process  Structural analysis  High-speed  Multiphase  Orthorhombic structures  Sol-gel methods  Space Groups  Structure geometry  Structure parameter  Structure refinements  Trigonal structures   High-pressure powder x-ray diffraction experiments and ab initio calculation of Ti3AlC2 期刊论文  OAI收割 JOURNAL OF APPLIED PHYSICS, 2009, 卷号: 106, 期号: 1, 页码: 5 作者:  Zhang, Haibin;  Wu, Xiang;  Nickel, Klaus Georg;  Chen, Jixin;  Presser, Volker   |  收藏  |  浏览/下载：23/0  |  提交时间：2021/02/02 ab initio calculations  elastic moduli  electronic structure  equations of state  high-pressure effects  lattice constants  space groups  titanium compounds  X-ray diffraction   High-pressure powder x-ray diffraction experiments and ab initio calculation of Ti3AlC2 期刊论文  OAI收割 JOURNAL OF APPLIED PHYSICS, 2009, 卷号: 106, 期号: 1, 页码: 5 作者:  Zhang, Haibin;  Wu, Xiang;  Nickel, Klaus Georg;  Chen, Jixin;  Presser, Volker   |  收藏  |  浏览/下载：22/0  |  提交时间：2021/02/02 ab initio calculations  elastic moduli  electronic structure  equations of state  high-pressure effects  lattice constants  space groups  titanium compounds  X-ray diffraction   High-pressure powder x-ray diffraction experiments and ab initio calculation of Ti3AlC2 期刊论文  OAI收割 JOURNAL OF APPLIED PHYSICS, 2009, 卷号: 106, 期号: 1, 页码: 5 作者:  Zhang, Haibin;  Wu, Xiang;  Nickel, Klaus Georg;  Chen, Jixin;  Presser, Volker   |  收藏  |  浏览/下载：16/0  |  提交时间：2021/02/02 ab initio calculations  elastic moduli  electronic structure  equations of state  high-pressure effects  lattice constants  space groups  titanium compounds  X-ray diffraction   High-pressure powder x-ray diffraction experiments and ab initio calculation of Ti(3)AlC(2) 期刊论文  OAI收割 Journal of Applied Physics, 2009, 卷号: 106, 期号: 1 H. B. Zhang; X. Wu; K. G. Nickel; J. X. Chen; V. Presser 收藏  |  浏览/下载：48/0  |  提交时间：2012/04/13 ab initio calculations  elastic moduli  electronic structure  equations  of state  high-pressure effects  lattice constants  space groups  titanium compounds  X-ray diffraction  liquid reaction synthesis  electronic-structure  gpa  compression  ti3sic2  behavior  crystal  ti3gec2  sn   Growth, structure, and optical properties of a congruent melting oxyborate,Bi2ZnOB2O6 期刊论文  OAI收割 Chemistry of Materials, 2009, 卷号: 21, 期号: 13, 页码: 2846-2850 Li; Feng1; 2; Hou; Xueling1; Pan; Shilie1; Wang; Xian3 收藏  |  浏览/下载：26/0  |  提交时间：2011/08/19 Deviation techniques - High quality - Orthorhombic systems - Phase-matchable - Second harmonic generation - Sellmeier equation - Space Groups - Three-dimensional networks - Top-seeded growth - Transmission spectrums - Unit-cell parameters - ZnO   Crystal structure prediction of LiBeH3 using ab initio total-energy calculations and evolutionary simulations 期刊论文  OAI收割 JOURNAL OF CHEMICAL PHYSICS, 2008, 卷号: 129, 期号: 23, 页码: 12 作者:  Hu, Chao-Hao;  Oganov, A. R.;  Wang, Y. M.;  Zhou, H. Y.;  Lyakhov, A.   |  收藏  |  浏览/下载：36/0  |  提交时间：2021/02/02 ab initio calculations  beryllium compounds  crystal structure  density functional theory  desorption  energy gap  enthalpy  ground states  heat of formation  high-pressure solid-state phase transformations  hydrogen storage  lithium compounds  space groups