机构

• 长春光学精密机械与物... [1]
• 高能物理研究所 [1]
• 新疆天文台 [1]
• 云南天文台 [1]
• 近代物理研究所 [1]

采集方式

• OAI收割 [5]

内容类型

• 期刊论文 [4]
• 会议论文 [1]

发表日期

• 2013 [1]
• 2010 [1]
• 2005 [1]
• 2001 [1]
• 1998 [1]

学科主题

• Astronomy ... [1]
• Physics [1]
• 星系和宇宙学 [1]

筛选

浏览/检索结果: 共5条，第1-5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 A new compact structure for a high intensity low-energy heavy-ion accelerator 期刊论文  OAI收割 CHINESE PHYSICS C, 2013, 卷号: 37, 页码: 127001 作者:  He, Y;  Wang, ZJ;  Jia, H;  Wang, WS;  Li, C   |  收藏  |  浏览/下载：21/0  |  提交时间：2016/03/29 Hybrid RFQ  high intensity  heavy ion linac  compact structure   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：26/0  |  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.   BL LAC objects and quasars in global S2 18 cm VLBI experiment 期刊论文  OAI收割 BALTIC ASTRONOMY, 2005, 卷号: 14, 期号: 3, 页码: 395-398 作者:  Pushkarev, A;  Kovalev, YY;  Molotov, I;  Tuccari, G;  Hong, X 收藏  |  浏览/下载：22/0  |  提交时间：2013/03/06 galaxies : active, compact, structure  BL Lacertae objects  quasars : general  radio continuum : galaxies   Study on design of proton linacs 期刊论文  OAI收割 HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION, 2001, 卷号: 25, 期号: 5, 页码: 429-436 作者:  Yu QZ(郁庆长);  Yu, QC 收藏  |  浏览/下载：13/0  |  提交时间：2016/06/28 proton linac  high-current accelerator  compact accelerator  accelerating structure   Further evidence for an effect of radio structure of core-dominated quasars and a method for estimating cosmological parameters 期刊论文  OAI收割 ASTROPHYSICAL JOURNAL, 1998, 卷号: 508, 期号: 2, 页码: L119-L122 作者:  Tan YP(覃一平);  Xie GZ(谢光中) 收藏  |  浏览/下载：18/0  |  提交时间：2016/04/12 galaxies : active  galaxies : compact  galaxies : nuclei  galaxies : structure  quasars : general  radio continuum : galaxies