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Research on the Fault Location Method of Double-terminal MMC-HVDC Transmission Line without the Influence of Wave Velocity 会议论文
Beijing, China, June 21, 2020 - June 22, 2020
作者:  Zhang, Mingguang;  Yang, Chengming;  Liu, Zilin;  Chang, Jianhua
收藏  |  浏览/下载:2/0  |  提交时间:2020/12/18
A Turbulence Image Restoration Algorithm for Subpixel Position of Location Holes on Nuclear Fuel Assemblies 会议论文
OPTICAL METROLOGY AND INSPECTION FOR INDUSTRIAL APPLICATIONS V, 2018-01-01
作者:  Chen, Wenjun[1];  Zheng, Zheng[2];  Zhang, Zhen[3]
收藏  |  浏览/下载:4/0  |  提交时间:2019/04/22
A novel PDR aided UWB indoor positioning method 会议论文
Proceedings of 5th IEEE Conference on Ubiquitous Positioning, Indoor Navigation and Location-Based Services, UPINLBS 2018
作者:  Xia, M.;  Xiu, C.;  Yang, D.;  Wang, L.
收藏  |  浏览/下载:12/0  |  提交时间:2019/12/30
Adaptive genetic algorithm-based method for antenna location optimization in RF relative measurement 会议论文
2018 NASA/ESA Conference on Adaptive Hardware and Systems, AHS 2018
作者:  Zijie, W.;  Rongke, L.;  Weiqing, M.;  Xiaoyan, S.;  Thompson, J.
收藏  |  浏览/下载:3/0  |  提交时间:2019/12/30
Database Search Algorithm Based on Track Predicting in Fingerprinting Localization 会议论文
INTELLIGENCE SCIENCE AND BIG DATA ENGINEERING, ISCIDE 2017, 2017-01-01
作者:  Zou, Deyue;  Guo, Yuqun;  Liu, Xin
收藏  |  浏览/下载:7/0  |  提交时间:2019/12/03
An Improved Kalman Filtering Method for Indoor Location 会议论文
2016 2nd IEEE International Conference on Computer and Communications (ICCC 2016), Chengdu, China, October 14-17, 2016
作者:  Guo TT(郭廷廷);  Liu MZ(刘明哲);  Qiao F(乔枫);  Xu AD(徐皑冬);  Liu QN(刘秦宁)
收藏  |  浏览/下载:39/0  |  提交时间:2016/12/21
Signal-in-Space Accuracy Research of GPS/BDS in China Region 会议论文
7th China Satellite Navigation Conference (CSNC), Changsha, PEOPLES R CHINA, 2016-01-01
作者:  Sun, Si;  Wang, Zhipeng
收藏  |  浏览/下载:3/0  |  提交时间:2019/12/30
The research of DV-HOP positioning algorithm based on RSSI calibration 会议论文
Changsha, China, April 18, 2014 - April 20, 2014
作者:  Cao, Jie;  Chen, Mu
收藏  |  浏览/下载:20/0  |  提交时间:2020/11/15
Structural design of primary mirror subassembly for space telescope (EI CONFERENCE) 会议论文
2nd International Conference on Mechatronics and Applied Mechanics, ICMAM 2012, December 8, 2012 - December 9, 2012, Taiwan
Xu H.
收藏  |  浏览/下载:43/0  |  提交时间:2013/03/25
In order to design a large aperture primary mirror with the diameter of 1150 mm  the parameters impacting on gravity deformation of the mirror were analyzed and discussed in detail  including material selection  diameter-thickness ratio  the number of the support points  location selection and lightweight structure  etc. A novel space mirror structure system was put forward  and its back was opened and supported by six points on back. The dynamic and static and thermal characteristics were analyzed based on the finite element method. Analysis results showed the surface figure accuracy reached to RMS 14.5nm under the action of gravity load along the optical axis direction and the first-order natural frequency was 214Hz which met to the designed indexes requirements. (2013) Trans Tech Publications  Switzerland.  
Structural design of large aperture rectangular mirror for space telescope (EI CONFERENCE) 会议论文
2nd International Conference on Civil Engineering and Transportation, ICCET 2012, October 27, 2012 - October 28, 2012, Guilin, China
Li Z.
收藏  |  浏览/下载:27/0  |  提交时间:2013/03/25
Structural design of large aperture mirror is one of the key technologies for space telescope development. To meet the requirements of high stiffness  strength and thermal dimensional stability  some factors such as support scheme  materials selection  lightweight design and flexible support design were taken into account. The three supports location of the mirror was determined according to the modal analytical solution. By adjusting the parameters of flexure hinge  influences of gravity  assembly stress and thermal stress on the mirror were reduced obviously. Finite element analysis (FEA) results indicate that the surface accuracy reach to rms10.2nm and 10.8nm under the gravity along optical axis direction and 5C uniform temperature rise respectively  the fundamental frequency of the mirror component is 268Hz. Dynamics test shows that the first order natural frequency is 256Hz  which shows an error less than 5% compared to FEA results. (2013) Trans Tech Publications  Switzerland.  


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