机构

• 长春光学精密机械与物... [1]
• 高能物理研究所 [1]

采集方式

• OAI收割 [2]

内容类型

• 会议论文 [1]
• 期刊论文 [1]

发表日期

• 2011 [1]
• 2007 [1]

学科主题

筛选

浏览/检索结果: 共2条，第1-2条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序作者升序作者降序 Kinematics in Randers-Finsler geometry and secular increase of the astronomical unit 期刊论文  OAI收割 中国物理C, 2011, 期号: 11, 页码: 914-919 作者:  Li X(李昕);  Chang Z(常哲) 收藏  |  浏览/下载：7/0  |  提交时间：2015/12/10 ephemerides  celestial mechanics  astronomical unit  moon   Study on the Driving Scheme of a 4-m Alt-azimuth Telescope (EI CONFERENCE) 会议论文  OAI收割 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Large Mirrors and Telescopes, July 8, 2007 - July 12, 2007, Chengdu, China 作者:  Zhang J.;  Dai S.;  Zhao Y.;  Zhao Y.;  Zhao Y. 收藏  |  浏览/下载：29/0  |  提交时间：2013/03/25 By summarizing the corresponding parameters Of the driving system of a 4-m Alt-azimuth telescope  some unit techniques like the driving modes and structure  angular position measurement methods in detail  have been analyzed in the paper. A set of primary schemes for astronomical applications  including the altitude axes being driven by 2 DC torque motors  the azimuth by 4 DC torque motors using helical gears  and two pieces of the 27-bit segment tape encoders for each set of axes is proposed. To meet practical engineering needs  the shafting motion parameters are designed and motor elementary parameters are primarily calculated to offer the important references for further study on system driving model and prototype development.