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浏览/检索结果: 共10条，第1-10条 帮助

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Rotational properties in even-even superheavy (254-258)Rf nuclei based on total-Routhian-surface calculations 期刊论文  OAI收割
CHINESE PHYSICS C, 2014, 卷号: 38
作者:  Liu Min-Liang;  Jiang Jin-Ge;  Chai Qing-Zhen;  Wang Hua-Lei
  |  收藏  |  浏览/下载：25/0  |  提交时间：2018/07/05
Lateral migration of fiber in settling suspensions 会议论文  OAI收割
Paper Conference and Trade Show, PaperCon 2014, Nashville, TN, United states, April 26, 2014 - April 30, 2014
作者:  Qi DW;  He GW(何国威);  Liu YM
收藏  |  浏览/下载：23/0  |  提交时间：2017/05/27
Trajectory tracking control of a quad-rotor UAV based on command filtered backstepping (EI CONFERENCE) 会议论文  OAI收割
2012 3rd International Conference on Intelligent Control and Information Processing, ICICIP 2012, July 15, 2012 - July 17, 2012, Dalian, China
Gong X.; Bai Y.; Peng C.; Zhao C.; Tian Y.
收藏  |  浏览/下载：31/0  |  提交时间：2013/03/25
A quad-rotor unmanned aerial vehicle is an under-actuated  strong coupled nonlinear system with parameters uncertainty and unknown external aerodynamic disturbance. The trajectory tracking control system with a nested double-loops structure is designed in this paper according to the coupling characteristic between the attitude angles and translational position. A PD control algorithm is proposed in the translational outer-loop to export the desired attitude signals to the attitude inner-loop. An adaptive backstepping control algorithm is designed in the inner-loop with respect to the uncertain rotational inertia and un-modeled disturbance  while in order to reduce the computational complexity the command filtered approach is introduced into the designing procedure. And finally  the numerical simulation results are presented for the trajectory tracking stabilization of a Quad-rotor  which demonstrates the excellent performance of the proposed control system and illustrate its robustness in face of disturbance and uncertain parameters. 2012 IEEE.  
Study on bandwidth mutual-benefit between the azimuth and pitch in an optoelectronic tracking system (EI CONFERENCE) 会议论文  OAI收割
MEMS/MOEMS Technologies and Applications III, November 12, 2007 - November 14, 2007, Beijing, China
作者:  Guo J.;  Guo J.;  Chen J.
收藏  |  浏览/下载：16/0  |  提交时间：2013/03/25
Two-axis optoelectronic tracking equipments generally use such mode that azimuth and pitch system are independently controlled. It leads to the two structures completely uncoupled  therefore  and reduces the state space dimension. But the main problem is that the rotational inertia of azimuth is much larger than that of pitch  it is an effective control mode to the two-axis photoelectric tracking equipments.  which leads its dynamic tracking performance is worse. So to find a more suitable mechanics and more effective control strategy is necessary. Considering the tracking ability  this paper designs BMC (bandwidth mutual compensation) to uniformly correct the error of both the azimuth and pitch system in real time  it is realized by cross coupling control to the azimuth and pitch. The simulation result verified that compared with classical uncoupling system BMS not only guarantees the state space dimension but improves systematic tracking performance about 2  
Review and comparison of some common used rotational spectrum formulas 期刊论文  OAI收割
HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION, 2006, 卷号: 30, 页码: 45-47
作者:  Liu, Shu-Xin;  Lei, Yi-An;  Zeng, Jin-Yan
  |  收藏  |  浏览/下载：80/0  |  提交时间：2018/05/31
Configuration structure of superdeformed bands in A similar to 190 mass region 期刊论文  OAI收割
HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION, 2005, 卷号: 29, 页码: 871-874
作者:  Liu, SX
  |  收藏  |  浏览/下载：18/0  |  提交时间：2018/05/31
Systematic description of the superdeformed bands of the odd-a nuclei in the A approximate to 190 mass region 期刊论文  OAI收割
HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION, 2004, 卷号: 28, 期号: 10, 页码: 1055-1064
作者:  Liu, YX;  Tang, J;  Tang, J , Peking Univ, Dept Phys, Beijing 100871, Peoples R China.
  |  收藏  |  浏览/下载：27/0  |  提交时间：2012/08/30
Description of superdeformed bands of the nuclei in A-60 mass region 期刊论文  OAI收割
CHINESE PHYSICS LETTERS, 2003, 卷号: 20, 期号: 8, 页码: 1227-1230
作者:  Liu, YX;  Meng, XM;  Liu, YX , Peking Univ, Dept Phys, Beijing 100871, Peoples R China.
  |  收藏  |  浏览/下载：23/0  |  提交时间：2012/08/29
Microscopic mechanism of identical superdeformed bands in Hg-192,Hg-193,Hg-194 期刊论文  OAI收割
PHYSICAL REVIEW C, 2002, 卷号: 66, 期号: 2, 页码: -
作者:  Liu, SX , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.;  Liu, SX;  Zeng, JY;  Zhao, EG
  |  收藏  |  浏览/下载：28/0  |  提交时间：2012/08/29
Exponential model with pairing attenuation applied to superdeformed nuclei in the A similar to 190 region 期刊论文  OAI收割
PHYSICAL REVIEW C, 1997, 卷号: 55, 期号: 5, 页码: 2324-2329
作者:  Zhou, SG , BEIJING UNIV,DEPT TECH PHYS,BEIJING 100871,PEOPLES R CHINA.;  Zhou, SG;  Zheng, CK
  |  收藏  |  浏览/下载：12/0  |  提交时间：2012/08/29