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Chinese Academy of Sciences Institutional Repositories Grid
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长春光学精密机械与物... [2]
地质与地球物理研究所 [1]
武汉物理与数学研究所 [1]
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OAI收割 [4]
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会议论文 [2]
期刊论文 [2]
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2019 [1]
2016 [1]
2011 [1]
2009 [1]
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Extending the stability limit of explicit scheme with spatial filtering for solving wave equations
期刊论文
OAI收割
JOURNAL OF COMPUTATIONAL PHYSICS, 2019, 卷号: 397, 页码: 9
作者:
Gao, Yingjie
;
Zhang, Jinhai
;
Yao, Zhenxing
  |  
收藏
  |  
浏览/下载:145/0
  |  
提交时间:2019/11/14
Explicit scheme
Spatial filtering
CFL stability limit
Time-dispersion error
Large time step
THE RELATIVISTIC VLASOV-MAXWELL-BOLTZMANN SYSTEM FOR SHORT RANGE INTERACTION
期刊论文
OAI收割
KINETIC AND RELATED MODELS, 2016, 卷号: 9, 期号: 3, 页码: 515-550
作者:
Liu, Shuangqian
收藏
  |  
浏览/下载:36/0
  |  
提交时间:2016/07/12
Relativistic Vlasov-Maxwell-Boltzmann system
large time stability
coercivity
time-velocity weighted energy method
optimal temporal decay
Adaptive control at launching using three loop autopilot (EI CONFERENCE)
会议论文
OAI收割
2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China
作者:
Zhang Y.
收藏
  |  
浏览/下载:25/0
  |  
提交时间:2013/03/25
In order to guarantee the precise initial flight trajectory
control the missile disturbance of large disturbance torque
three loop adaptive autopilot was researched. The characteristics of the projectile and three loop autopilot instruction formation characteristics were analysed. From equivalent pitching angle of lateral acceleration feedback loop
combined with the instruction of generalized error
autopilot structure was simplified
and three loop autopilot adaptive control law and stability were designed. The test data show that when disturbance torque was 600Nm
the attitude angle generalized error was -4.4. In the time lasted about 15s
late trajectory accuracy was within 1.0.Three loop autopilot adaptive control law was able to control the disturbance of initial trajectory and adapt to dynamic characteristics changes
control system stability. It was the initial trajectory accurate solution method of flight. 2011 IEEE.
Micro-motion exposure method based on PZT piezoelectric ceramics (EI CONFERENCE)
会议论文
OAI收割
International Symposium on Photoelectronic Detection and Imaging 2009: Material and Device Technology for Sensors, June 17, 2009 - June 19, 2009, Beijing, China
作者:
Meng Z.
;
Meng Z.
收藏
  |  
浏览/下载:102/0
  |  
提交时间:2013/03/25
There mainly is laser digital photofinishing technique and digital photofinishing technique based on LCD consisting of TFT and LCOS in the digital photofinishing field at the present time. The former have a good many merit such as wide color gamut
high processing rate
large output size and high brightness
but his cost is very high
his maintain technique being comparatively complex
that result in difficult use for people. The utilization ratio of the latter is low because of lower resolution and lower aperture ratio for LCD
but the digital photofinishing based on LCD have lower cost and higher utilization ration
being suitable for people's current standard of living. Considering above mentioned problem
a micro-motion exposure method based on PZT piezoelectric ceramics used in digital image photofinishing is presented. The two-dimension micro-motion exposure system consisting of PZT piezoelectric ceramics
LCD panel
polarizing film and spring strip is designed. By means of PZT piezoelectric ceramics the LCD panel is removed about the one half of the pixel size of the LCD panel for four times from the original place
at the same time imaging system is exposed four times at the printing paper. The software is used to control the time synchronization
the exposure time and motion range of the LCD panel. The system has advantages such as shorter response time than 0.1seconds
lesser motion error than 0.01 microns
high stability and repeatability. Experimental results show that the proposed micro-motion exposure method improve the picture brightness and enlarge output size
at the meantime reducing the cost of the system. 2009 SPIE.