中国科学院机构知识库网格
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Improved Static Capacity Configuration for Hybrid Power Supply Scheme With Energy Storage Based on NSGA in Tokamak 期刊论文  OAI收割
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 2024, 卷号: 60
作者:  
Tian, Yunxiang;  Wu, Yanan;  Lu, Jing;  Li, Jun;  Xu, Liuwei
  |  收藏  |  浏览/下载:6/0  |  提交时间:2024/11/20
The Benefits of Receiver Clock Modelling in Satellite Timing 期刊论文  OAI收割
SENSORS, 2021, 卷号: 21, 期号: 2, 页码: 15
作者:  
Qin, Weijin;  Wang, Xiao;  Su, Hang;  Zhang, Zhe;  Li, Xiao
  |  收藏  |  浏览/下载:33/0  |  提交时间:2021/11/29
Static output feedback secure control for cyber-physical systems based on multisensor scheme against replay attacks 期刊论文  OAI收割
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL, 2020, 卷号: 30, 期号: 18, 页码: 8313-8326
作者:  
Su L(苏磊);  Ye D(叶丹);  Zhao XG(赵新刚)
  |  收藏  |  浏览/下载:29/0  |  提交时间:2020/10/18
Study on the azimuth bearing scheme of a large Alt-azimuth telescope (EI CONFERENCE) 会议论文  OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, April 26, 2010 - April 29, 2010, Dalian, China
作者:  
Wang H.;  Dai S.;  Zhang J.;  Wang H.;  Zhang J.
收藏  |  浏览/下载:40/0  |  提交时间:2013/03/25
The azimuth bearing schemes in typical large Alt-azimuth telescopes  especially the 3.5-m APO telescope and the 4.1-m SOAR telescope were analyzed. A scheme of high-angular contacted thrust ball bearing integrated with a radial ball bearing was put forward. According to the Hertz contact theory  the corresponding parameters were designed for engineering application. The static performance parameters  within the range of 60 85 original contact angle were calculated. Compared with the traditional plane thrust ball bearing  the results shows that the high-angular (80) contact thrust ball bearing has more benefits at bearing strength and rigidity for large telescope. The 1500mm diameter prototyping bearing shows good performance  including the axial jitter is 0.009mm  the radial jitter is 0.006mm  the maximum starting torque without load is 30N·m  and the load capacity is more than 30t  which offers advanced technique path for the buildup of the high precision azimuth shafting and the whole telescope system. 2010 Copyright SPIE - The International Society for Optical Engineering.  
Error analysis and test study of fiber optic gyroscope north-finder (EI CONFERENCE) 会议论文  OAI收割
Advanced Sensor Systems and Applications II, November 8, 2004 - November 12, 2004, Beijing, China
Zhang Z.; Sun J.; Wu K.
收藏  |  浏览/下载:22/0  |  提交时间:2013/03/25
North-finder system is an important application of the inertial technology. It provides true north azimuth information to f all kinds of ground-based equipment. This paper designed a dynamic automatic north-finder based on the modulation output of fiber optic gyroscope (FOG). In this scheme  the sine output signal of the FOG was sampled and disposed  and then the real north of surveyed point on the surface of earth was calculated. The deviation caused by the base tilt was compensated by an accelerator. The output signals of FOG and accelerator were computed combined with the position sampled from increasing encoder by digital signal processor. Successive rotating technique was adopted to modulate the FOG signal periodically. Most of the low frequency part of random gyro drift errors was compensated. The north-finder accuracy was improved compared with the traditional static measuring method. The test result shows the FOG automatic north-finder obtains 2' true north angle accuracies within not more than three minutes  can meet the orientation need of artillery  terrain measurement vehicle  armored car  unmanned drive vehicle  geodetic survey and tunnel exploration.