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CAS IR Grid
机构
长春光学精密机械与物... [2]
中国科学院大学 [1]
重庆绿色智能技术研究... [1]
上海光学精密机械研究... [1]
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OAI收割 [4]
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期刊论文 [3]
会议论文 [2]
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2019 [1]
2016 [1]
2011 [1]
2009 [1]
2008 [1]
学科主题
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RNN for Solving Perturbed Time-Varying Underdetermined Linear System With Double Bound Limits on Residual Errors and State Variables
期刊论文
OAI收割
IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS, 2019, 卷号: 15, 期号: 11, 页码: 5931-5942
作者:
Lu, Huiyan
;
Jin, Long
;
Luo, Xin
;
Liao, Bolin
;
Guo, Dongsheng
  |  
收藏
  |  
浏览/下载:38/0
  |  
提交时间:2020/08/24
Mathematical model
Time-varying systems
Linear systems
Informatics
Robots
Recurrent neural networks
Double bound limits
recurrent neural network
simulation results
theoretical analyses
time-varying underdetermined linear system
Dynamic and thermodynamic characteristics of the moving-coil linear compressor for the pulse tube cryocooler. part a: theoretical analyses and modeling
期刊论文
iSwitch采集
International journal of refrigeration-revue internationale du froid, 2016, 卷号: 69, 页码: 480-496
作者:
Dang, Haizheng
;
Zhang, Lei
;
Tan, Jun
收藏
  |  
浏览/下载:30/0
  |  
提交时间:2019/05/09
Dynamic and thermodynamic characteristics
Moving-coil linear compressor
Stirling-type pulse tube cryocooler
Theoretical analyses and modeling
Design of motion compensation mechanism of satellite remote sensing camera (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
Gu S.
;
Yan Y.
;
Xu K.
;
Jin G.
收藏
  |  
浏览/下载:47/0
  |  
提交时间:2013/03/25
With the development of aerospace remote sensing technology
the ground resolution of remote sensing camera enhances continuously. Since there is relative motion between camera and ground target when taking pictures
the target image recorded in recording media is moved and blurred. In order to enhance the imaging quality and resolution of the camera
the image motion had to be compensated. In order to abate the effect of image motion to image quality of space camera and improve the resolution of the camera
the compensation method of image motion to space camera is researched. First
the reason of producing drift angle and adjustment principle are analyzed in this paper. This paper introduce the composition and transmission principle of image motion compensation mechanism. Second
the system adopts 80C31 as controller of drift angle
and adopts stepping motor for actuators
and adopts absolute photoelectric encoder as the drift Angle measuring element. Then the control mathematical model of the image motion compensation mechanism are deduced
and it achieve the closed-loop control of the drift angle position. At the last
this paper analyses the transmission precision of the mechanism. Through the experiment
we measured the actual precision of the image motion compensation mechanism
and compared with the theoretical analysis. There are two major contributions in this paper. First
the traditional image motion compensation mechanism is big volume and quality heavy. This has not fit for the development trend of space camera miniaturization and lightweight. But if reduce the volume and quality of mechanism
it will bring adverse effects for the precision and stiffness of mechanism. For this problem
This paper designed a image motion compensation that have some advantages such as small size
light weight at the same time
high precision
stiffness and so on. This image motion compensation can be applicable to the small optics cameras with high resolution. Second
the traditional mechanism control need to corrected
fitting and iterative for the control formula of mechanism. Only in this way
we can get the optimal control mathematical model. This paper has high precision of the control formula derived. It can achieve the high precision control without fitting
It also simplify the difficulty of control mathematical model establishment. This paper designed the range of adjusting of image motion compensation mechanism between -5 +5. Based on choosing-5
-4
-3
-2
-1
0
+1
+2
+3
+4
+4 as the expectation value of the imaginary drift angle
we get ten groups of the fact data in adjusting drift angle measured. The test results show that the precision of the drift angle control system can be achieved in 1. It can meet the system requirements that the precision of the control system is less than 3'
and it can achieve the high-precision image motion compensation. 2011 SPIE.
Analysis of laser jamming to satellite-based detector (EI CONFERENCE)
会议论文
OAI收割
International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, June 17, 2009 - June 19, 2009, Beijing, China
作者:
Guo L.-H.
;
Guo R.-H.
;
Wang S.-W.
收藏
  |  
浏览/下载:30/0
  |  
提交时间:2013/03/25
The reconnaissance satellite
communication satellite and navigation satellite used in the military applications have played more and more important role in the advanced technique wars and already become the significant support and aid system for military actions. With the development of all kinds of satellites
anti-satellite laser weapons emerge as the times require. The experiments and analyses of laser disturbing CCD (charge coupled detector) in near ground have been studied by many research groups
but their results are not suitable to the case that using laser disturbs the satellite-based detector. Because the distance between the satellite-based detector and the ground is very large
it is difficult to damage it directly. However the optical receive system of satellite detector has large optical gain
so laser disturbing satellite detector is possible. In order to determine its feasibility
the theoretical analyses and experimental study are carried out in the paper. Firstly
the influence factors of laser disturbing satellite detector are analyzed in detail
which including laser power density on the surface of the detector after long distance transmission
and laser power density threshold for disturbing etc. These factors are not only induced by the satellite orbit
but dependence on the following parameters: laser average power in the ground
laser beam quality
tracing and aiming precision and atmospheric transmission. A calculation model is developed by considering all factors which then the power density entering into the detector can be calculated. Secondly
the laser disturbing experiment is performed by using LD (laser diode) with the wavelength 808 nm disturbing CCD 5 kilometer away
which the disturbing threshold value is obtained as 3.5510-4mW/cm2 that coincides with other researcher's results. Finally
using the theoretical model
the energy density of laser on the photosensitive surface of MSTI-3 satellite detector is estimated as about 100mW/cm2
which is largely exceed the disturbing threshold and therefore verify the feasibility of using this kind of laser disturbing the satellite-based detector. According to the results. using the similar laser power density absolutely saturate the requirements to laser disturbing satellite-based detector. If considering the peak power of pulsed laser
even decrease laser average power
it is also possible to damage the detector. This result will provide the reliable evidences to evaluate the effect of laser disturbing satellite-based detector. 2009 SPIE.
静动结合的化学腐蚀法制备近场光学探针的理论分析
期刊论文
OAI收割
光学学报, 2008, 卷号: 28, 期号: s2, 页码: 367, 372
Yang Yongbin
;
徐文东
收藏
  |  
浏览/下载:1448/247
  |  
提交时间:2009/09/22
光学器件
Approximate solutions
扫描近场光学显微镜
Chemical etching method combining static etching and dynamic etching
光纤探针
Cone angles
静动结合的化学腐蚀法
Fiber probe
新月形
First orders
Meniscus
Optical probes
Static and dynamics
Theoretical analyses
Time ranges