中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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The influence of operation variables on stress spectrum of high-speed train bogie frames 期刊论文  OAI收割
VEHICLE SYSTEM DYNAMICS, 2022, 页码: 14
作者:  
Yuan, Zheng;  Chen, Xianjia;  Li, Cen;  Ma, Lijun;  Li, Qiang
  |  收藏  |  浏览/下载:69/0  |  提交时间:2022/05/17
An optimal control method for parallel variable speed hydraulic pumps used in High Magnetic Field Laboratory 会议论文  OAI收割
2018-10-12
作者:  
Qiu Wenjun;  Ouyang Zhengrong
  |  收藏  |  浏览/下载:47/0  |  提交时间:2021/12/08
The design and analysis of variable buoyancy system of AUV 会议论文  OAI收割
2nd Asia-Pacific Conference on Intelligent Robot Systems, ACIRS 2017, Wuhan, China, June 16-18, 2017
作者:  
Ren FL(任福琳);  Liang HG(粱洪光);  Zheng R(郑荣);  Li MZ(李默竹);  Sun QG(孙庆刚)
  |  收藏  |  浏览/下载:26/0  |  提交时间:2017/09/12
Novel fast measurement method of twist angle and optical retardation of liquid crystal display (EI CONFERENCE) 会议论文  OAI收割
Asia Display 2007, AD'07, March 12, 2007 - March 16, 2007, Shanghai, China
Huang X.; Lu Y.-T.; Kong X.-J.; Jing H.; Fu G.-Z.; Jin H.
收藏  |  浏览/下载:19/0  |  提交时间:2013/03/25
A novel method is proposed to measure twist angle and optical retardation of liquid crystal display in this paper. The new method which is one of single-wavelength methods has three characteristics  introducing a method of measuring the total intensity ratio of the transmitted light to eliminate the influence of absorption by the polarizer  using circularly and homogeneously aligned LC cell (CH-LC) as a unique polarization-converting device  analyzer  using variable sector diaphragm and photodetector to detect the total intensity of transmitted light whose original polarization direction is continuously changed from 0 to arbitrary angle  CH-LC  liquid crystal display and so on. The twist angle () and optical retardation (nd) can be derived by using Jones matrix analysis and a curve fitting where and nd are fitting parameters. Experiment proved the results are accurate  the process of operation is fast  the devices are economical.