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浏览/检索结果: 共19条，第1-10条 帮助

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Application of precision harmonic gear drive in focusing mechanism of space camera (EI CONFERENCE) 会议论文  OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Smart Structures and Materials in Manufacturing and Testing, April 26, 2010 - April 29, 2010, Dalian, China
作者:  Zhang X.;  Zhang X.;  Zhang X.
收藏  |  浏览/下载：31/0  |  提交时间：2013/03/25
A kind of precision harmonic gear drive in the focusing mechanism of space camera is studied  which adopt external meshing complex wave transmission mode. Wave generator is combined with an elliptic cam and a flexible bearing around it. Flexspline is a structure of single wave with the same teeth. The output shaft is supported by a single cross-roller bearing. Ball screws connected the output shaft translate the rotational motion to the linear motion  and drive the focusing mirror repeated moving along the linear guide. The output rigid wheel is connected with absolute encoder to detect displacement of focusing movement. It has the characteristics of big transmission ratio  high precision  compact structure  high efficiency and smooth running etc. According to the practical application of this harmonic gear drive in the space camera  the location relationship between the displacement of focusing structure and the focal plane movement is derived  and the system error is analyzed  its accuracy is tested with the open-loop control method. Experimental results show that transmission ratio of the instrument is 1:70  repeated positional accuracy is 2m  which meet the requirements for use. 2010 SPIE.  
Hydrothermal synthesis, crystal structure and fluorescent property of a novel polyoxometalate (H6Mo8O27)-O-VI center dot 3C(4)N(2)H(10) 期刊论文  OAI收割
Chinese Journal of Structural Chemistry, 2008, 卷号: 27, 期号: 9, 页码: 1144-1148
X. R. Lin; J. X. Chen; W. J. Zhang; Z. S. Li; T. Y. Lan; M. P. Zhu and A. K. Li
收藏  |  浏览/下载：25/0  |  提交时间：2013/01/22
Catalytic Oxidation of Cyclohexane with Alumina-Supported Schiff Base Manganese Complexes 期刊论文  OAI收割
Petrochemical Technology, 2008, 卷号: 37, 期号: 6, 页码: 554-558
作者:  Yang Danhong;  Zhao Wenjun;  Gao Lin;  Gao L(高林)
收藏  |  浏览/下载：37/0  |  提交时间：2012/11/29
Asymmetric Diels-Alder reactions on supported bis(oxazoline) catalysts 期刊论文  OAI收割
chinese journal of catalysis, 2006, 卷号: 27, 期号: 11, 页码: 946-948
作者:  Wang Hong;  Liu Jian;  Liu Peng;  Yang Qihua;  Xiao Jianliang
收藏  |  浏览/下载：34/0  |  提交时间：2015/11/11
Catalytic behavior of silica-supported chitosan-platinum-iron complex for asymmetric hydrogenation of ketones 期刊论文  OAI收割
POLYMERS FOR ADVANCED TECHNOLOGIES, 2004, 卷号: 15, 期号: 5, 页码: 287-290
作者:  Wei, WL;  Hao, SJ;  Zhou, J;  Huang, MY;  Jiang, YY
  |  收藏  |  浏览/下载：21/0  |  提交时间：2019/04/09
Hydrogenation of aldehydes catalyzed by kieselguhr-supported carboxymethylcellulose-nickel complex 期刊论文  OAI收割
POLYMERS FOR ADVANCED TECHNOLOGIES, 2004, 卷号: 15, 期号: 4, 页码: 218-220
作者:  Zhou, DJ;  Zhou, DQ;  Cui, XH;  Wang, FM;  Huang, MY
  |  收藏  |  浏览/下载：14/0  |  提交时间：2019/04/09
Hydrogenation of toluidines catalyzed by silica-supported carboxymethylcellulose-platinum complex 期刊论文  OAI收割
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES, 2004, 卷号: 20, 期号: 2, 页码: 176-179
作者:  Wang, X;  Yang, JH;  Huang, MY;  Jiang, YY
  |  收藏  |  浏览/下载：10/0  |  提交时间：2019/04/09
The asymmetric hydration of 1-octene to (S)-(+)-2-octanol with a biopolymer-metal complex, silica-supported chitosan-cobalt complex 期刊论文  OAI收割
REACTIVE & FUNCTIONAL POLYMERS, 2004, 卷号: 58, 期号: 2, 页码: 117-121
作者:  Xue, L;  Zhou, DJ;  Tang, L;  Ji, XF;  Huang, MY
  |  收藏  |  浏览/下载：20/0  |  提交时间：2019/04/09
Asymmetric hydrogenation of furfuryl alcohol catalyzed by a biopolymer-metal complex, silica-supported alginic acid-amino acid-Pt complex 期刊论文  OAI收割
REACTIVE & FUNCTIONAL POLYMERS, 2004, 卷号: 59, 期号: 1, 页码: 33-39
作者:  Wei, WL;  Zhu, HY;  Zhao, CL;  Huang, MY;  Jiang, YY
  |  收藏  |  浏览/下载：20/0  |  提交时间：2019/04/09
A new alpha-Keggin type polyoxometalate coordinated to four silver complex moieties: {PW9V3O40[Ag(2,2 '-bipy)](2)[Ag-2(2,2 '-bipy)(3)](2)} 期刊论文  OAI收割
dalton transactions, 2003, 期号: 2, 页码: 233-235
Luan GY; Li YG; Wang ST; Wang EB; Han ZB; Hu CW; Hu NH; Jia HQ
收藏  |  浏览/下载：23/0  |  提交时间：2010/09/13