机构

• 南京天文光学技术研究... [2]
• 长春光学精密机械与物... [1]
• 合肥物质科学研究院 [1]

采集方式

• OAI收割 [4]

内容类型

• 会议论文 [3]
• 期刊论文 [1]

发表日期

• 2020 [1]
• 2012 [1]
• 2008 [1]
• 2007 [1]

学科主题

• 天文技术与方法::自... [2]
• 天文望远镜::郭守敬... [2]
• 终端仪器::天文光谱... [1]

筛选

浏览/检索结果: 共4条，第1-4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 二维MAX-DOAS仪扫描控制系统设计 期刊论文  OAI收割 量子电子学报, 2020, 卷号: 37 作者:  刘志鹏;  司福祺;  杨太平;  杨东上;  窦科   |  收藏  |  浏览/下载：38/0  |  提交时间：2020/10/26 spectroscopy  scanning control system  TMC261  stepper motor  precision  resolution  光谱学  扫描控制系统  TMC261  步进电机  精度  分辨率   FIBER POSITIONING CONTROL FOR LAMOST BASED ON ZIGBEE PRO 会议论文  OAI收割 Beijing, China, 2012-9-21 作者:  Zhenchao Zhang;  Tongying Li 收藏  |  浏览/下载：35/0  |  提交时间：2014/01/09 LAMOST  Fiber Positioning  ZigBee PRO  Mesh topology  LM3S9B96  CC2520  CC2530  Stepper motor   Design and realization of the real-time spectrograph controller for LAMOST based on FPGA 会议论文  OAI收割 Marseille, France, 2008-6-23 作者:  Zhongwen Hu;  Yongtian Zhu;  Zhen Wu;  Yi Chen;  Jianing Wang 收藏  |  浏览/下载：32/0  |  提交时间：2014/01/01 real-time spectrograph controller  Field Programmable Gate Array (FPGA)  System On Programmable Chip (SOPC)  NIOSⅡ  intellectual property (IP)  stepper motor  Ethernet network  LAMOST   The cell thickness and twist angle measurement of twist nematic liquid crystal cell by rotation of a quarter-wave plate using fourier analysis method (EI CONFERENCE) 会议论文  OAI收割 Asia Display 2007, AD'07, March 12, 2007 - March 16, 2007, Shanghai, China Cui H.-Q.; Ling Z.-H. 收藏  |  浏览/下载：23/0  |  提交时间：2013/03/25 Proposed a new method of determining the cell thickness and the twist angle of twisted nematic liquid crystal cells  a quarter-wave plate was inserted between the liquid crystal cell and the analyzer  a stepper motor rotated the Retarder by 360  and measured the light intensity of every modulated point  solved the stokes parameters of polarization light exiting from the liquid crystal cell using Fourier analysis method  thereby determining the cell thickness and the twist angle. Experiments indicated that it is suitable for measuring the low-cell-gap accurately. In addition  it also can be applied to the measurement of the cell thickness and twist angle of single polarizer reflected liquid crystal cell.