中国科学院机构知识库网格
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浏览/检索结果: 共7条,第1-7条 帮助

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Review on Developments and Progress in Nickelate-Based Heterostructure Composites and Superconducting Thin Films 期刊论文  OAI收割
ADVANCED QUANTUM TECHNOLOGIES, 2022
作者:  
Yang, Xiaoping;  Li, Miao;  Ding, Zhenyu;  Li, Liangyu;  Ji, Ce
  |  收藏  |  浏览/下载:50/0  |  提交时间:2022/12/23
Optimal design of near-earth asteroid sample-return trajectories in the sun-earth-moon system 期刊论文  iSwitch采集
Acta mechanica sinica, 2016, 卷号: 32, 期号: 4, 页码: 753-770
作者:  
He, Shengmao;  Zhu, Zhengfan;  Peng, Chao;  Ma, Jian;  Zhu, Xiaolong
收藏  |  浏览/下载:39/0  |  提交时间:2019/05/09
Parameter optimization of passive dynamic walking biped with knees (EI CONFERENCE) 会议论文  OAI收割
2012 2nd International Conference on Materials Science and Information Technology, MSIT 2012, August 24, 2012 - August 26, 2012, Xi'an, Shaan, China
作者:  
Zhang P.
收藏  |  浏览/下载:26/0  |  提交时间:2013/03/25
A method to find the optimized parameter values of passive dynamic walking biped is presented. The effects of biped physical parameters on the stability property of passive gaits are studied by simulation experiments. The chosen parameters include the mass distribution  length of leg and slope angle. The stability property of passive walking limit cycles is used as criterion of optimization calculation  including the orbital stability described by eigen-values of linearized Poincare map and the global property described by size of attraction region. The simulation results show how the stability of limit cycle varies when physical parameters of the passive biped change. The work is useful to explore the inherent property of passive dynamic walking and can be used as an important instruction in the mechanical design of biped robots based on principle of passive dynamic walking. (2012) Trans Tech Publications  Switzerland.  
Design and calibration of the solar irradiance monitor (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China
作者:  
Yang D.-J.;  Gong C.-H.;  Wang Y.-P.;  Ye X.;  Fang W.
收藏  |  浏览/下载:39/0  |  提交时间:2013/03/25
The solar irradiance monitor (SIM)  with the design accuracy of 5  used to monitor the secular changes of the total solar irradiance on FY-3 satellite  takes the sun-scanning measurement method on-orbit. Compared to the sun-tracking measurement method  this method simplifies the structure and cuts the cost  but the measuring accuracy is affected by the sun-synchronous orbit  sunlight incidence angle and the installing angle of the SIM in the satellite. Through the ground calibration experiment  studies on the affection of different sunlight incidence angles to the measurement accuracy. First  by the satellite tool kit (STK) simulation software  simulates the orbital parameters of the sun-synchronous satellite  and calculates the Sun ascension and declination at any time. By the orbit coordinate transformation matrix gets the components of the Sun vectors to the axes of the satellite  and base on the components designs the field of view and the installing angles of the SIM. Then  designs and completes the calibration experiment to calibrate the affection of the incidence angles. Selecting 11 different angles between the sunlight and the satellite X-axis  measures the total solar irradiance by the SIM at each angle  and compares to the irradiances of the SIAR reference radiometers  and gets the coefficient curves of the three channels of the SIM. Finally  by the quadratic fitting  gets the correction equations on the incidence angles: R 1=5.7110-52 -2.45310 -3+1.0302  R2=2.8410-5-1. 96510-3+1.0314 and R3 =1.7210 -52-4.18410-4+0.9946. The equations will aimprove the on-orbit measurement accuracy of the solar irradiance  and are very important to the on-orbit data processing after the satellite launched. 2011 SPIE.  
Orbit design for the Laser Interferometer Space Antenna (LISA) 期刊论文  OAI收割
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2010, 卷号: 53, 期号: 1, 页码: 179-186
作者:  
Xia Yan;  Li GuangYu;  Heinzel, Gerhard;  Ruediger, Albrecht;  Luo YongJie
收藏  |  浏览/下载:46/0  |  提交时间:2011/11/23
Coorbital restricted problem and its application in the design of the orbits of the LISA spacecraft 期刊论文  OAI收割
INTERNATIONAL JOURNAL OF MODERN PHYSICS D, 2008, 卷号: 17, 期号: 7, 页码: 1005-1019
作者:  
收藏  |  浏览/下载:24/0  |  提交时间:2011/12/29