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长春光学精密机械与... [44]
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OAI收割 [44]
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会议论文 [44]
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2013 [1]
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内容类型:会议论文
专题:长春光学精密机械与物理研究所
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Thermal effect of diode-pumped solid state lasers based on composite crystals
会议论文
OAI收割
2013 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Optical Signal Processing, November 17, 2013 - November 19, 2013, Beijing, China
作者:
Huang Y.
收藏
  |  
浏览/下载:8/0
  |  
提交时间:2014/05/15
A new algorithm for solving the best-fit sphere of optical aspherical surface (EI CONFERENCE)
会议论文
OAI收割
2nd International Conference on Advances in Materials and Manufacturing, ICAMMP 2011, December 16, 2011 - December 18, 2011, Guilin, China
作者:
Lin J.
;
Lu M.
收藏
  |  
浏览/下载:30/0
  |  
提交时间:2013/03/25
To solve the best-fit sphere (BFS) accurately is one of the technological keys for the generating and testing of optical aspherical surfaces. This paper presents a new algorithm for solving the BFS of aspherical surfaces to suppress some deficiencies in the existing BFS algorithms. In the proposed approach
it is not only suitable for the conic surface
a BFS is constructed
but also for higher order aspheres. The obtained asphericity and material removal function is more suitable for the machining and test. (2012) Trans Tech Publications
which passes through both sides of endpoints in the section o -?xy of the aspherical surfaces
Switzerland.
the center of the BFS is shifted along the x-axis
and its radius of curvature is automatically computed. The variable step size method is proposed to speed up the convergence of the iteration. Through numerically solving the BFS of conic and cubic surface
the advantages of the proposed approach are verified. The results show that the proposed approach is of rapid convergence
and high accuracy
The state of the art for liquid crystal adaptive optics in astronomical applications (EI CONFERENCE)
会议论文
OAI收割
2012 International Conference on Optoelectronics and Microelectronics, ICOM 2012, August 23, 2012 - August 25, 2012, Changchun, China
作者:
Liu Y.
;
Liu Y.
;
Xuan L.
;
Liu Y.
收藏
  |  
浏览/下载:23/0
  |  
提交时间:2013/03/25
In this paper
we summarize the researches of liquid crystal (LC) adaptive optics(AO) in astronomical applications. Dual frequency and nematic LC materials were reported to be used in astronomical observations. However
nematic LC with its simple producing and driving method and multi-gray-level is promising in the application. We have investigated the nematic LC AO system and promoted its application for nearly ten years. Here
we reported our newest nematic LC AO system with bandwidth result of 3dB is 54.4 Hz
0dB bandwidth is 79.1Hz. 2012 IEEE.
The state of the art for Liquid crystal adaptive optics in astronomical applications
会议论文
OAI收割
2012
作者:
Xuan L.
收藏
  |  
浏览/下载:23/0
  |  
提交时间:2013/03/28
Effect of the edge roughness of the pinhole in point diffraction interferometer on light diffraction
会议论文
OAI收割
2012
Lu Z. X.
;
Jin C. S.
;
Ma D. M.
;
Zhang H. T.
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2013/03/28
Evaluation system of photovoltaic disturbance effect based on simulations (EI CONFERENCE)
会议论文
OAI收割
2011 International Conference on Electric Information and Control Engineering, ICEICE 2011, April 15, 2011 - April 17, 2011, Wuhan, China
作者:
Li Y.
;
Lu M.
;
Guo L.-H.
;
Li Y.
;
Li Y.
收藏
  |  
浏览/下载:10/0
  |  
提交时间:2013/03/25
The evaluation system is investigated for the disturbing effect of optical countermeasure device to photoelectrical guided weapon in this paper. The general optical countermeasure simulation model is established by using photoelectrical countermeasure simulation test to conduct the estimation of countermeasure effect. The target-missing quantity of guided weapon and guided precision is designated as evaluating index. Whether the disturbing is valid or not is based on Whether the target-missing quantity is more than 3 times of normal guided precision without disturbance or not. 2011 IEEE.
Sort optimization algorithm of median filtering based on FPGA (EI CONFERENCE)
会议论文
OAI收割
2010 International Conference on Machine Vision and Human-Machine Interface, MVHI 2010, April 24, 2010 - April 25, 2010, Kaifeng, China
作者:
Li S.
收藏
  |  
浏览/下载:23/0
  |  
提交时间:2013/03/25
The traditional sorting algorithm of median filtering is optimized according to the hardware structure features of FPGA. FPGA is used to acquire the data parallelly for comparing the data of the same column in the median filtering window. Comparing results shared by adjacent filter window are saved temporarily to match the new round of median filtering by using FPGA internal resources. This method can reduce the comparing times from current 21 down to 13
and improve the algorithm efficiency nearly 40%.The experimental results prove that the optimized algorithm can filter a 1K1K gray-level image in about 20ms
which ensure the proposed algorithm can be applied in the real-time image median filtering system. 2010 IEEE.
Infrared signature measurement of targets accounting for atmospheric attenuation (EI CONFERENCE)
会议论文
OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
作者:
Yang C.-Y.
;
Lu M.
;
Zhang J.-P.
;
Cao L.-H.
收藏
  |  
浏览/下载:15/0
  |  
提交时间:2013/03/25
Infrared radiation signature measurement of targets is one of important ways for target signature acquirement and target recognition. When measuring the infrared signature of a target in the atmosphere
molecules and aerosol particles in the atmosphere would attenuate the infrared radiation from the target
and at the same time
the air path radiation would be added to the target radiation. Therefore
in order to obtain the intrinsic infrared radiation of the target
it is necessary to perform atmospheric correction in the process of target radiation inversion. A model for target radiation measurement and inversion was established
and precision analysis on the model was given. A longwave infrared camera was used to perform infrared signature measurement experiment on an ISDC extended-area blackbody. Based on atmospheric parameters
the atmospheric transmittance and the air path radiation between the blackbody target and the camera were calculated by using the MODTRAN software
for use in atmospheric correction in the target radiation inversion process. The experimental results showed that radiation inversion precisions were about 7.3%9.3%. Additionally
inversion precision will improve as target temperature rises. 2010 IEEE.
The implementation of parachute jump commanding and simulation training system (EI CONFERENCE)
会议论文
OAI收割
2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China
作者:
Li Y.
;
Li Y.
;
Li Y.
;
Li Y.
;
Cui S.
收藏
  |  
浏览/下载:22/0
  |  
提交时间:2013/03/25
In order to improve the method of training the commander
secondly
thirdly
Finally
the aerial instructor
we adopted Vega to develop the aerial instructor federate with the models we build with Creator on MFC at Visual C++6.0 platform
we implement the commander federate
we interlink the federate that we implemented above with RTI
back parachute commander
the guarantee unit federate
realize a cooperated parachute jump training system. Through lots of experiments and we compare the training system experiment result with the computes data
the guarantee unit and the aerial broadcaster
the back parachute commander federate and the aerial broadcaster federate on MFC at VC++6.0
we use the compare result to direct the trainee. This system makes the parachute jump command training more effective
in this paper
more safety
we used Vega
shorten training cycle
Creator
lower costs and weather protected. 2010 IEEE.
and RTI implement the Parachute Jump Commanding And Simulation System to simulate the parachute jump commanding process. In this system
firstly
we used Creator build the 3D models that we need in the system
Direct adaptive fuzzy decentralized control for reconfigurable modular manipulators (EI CONFERENCE)
会议论文
OAI收割
29th Chinese Control Conference, CCC'10, July 29, 2010 - July 31, 2010, Beijing, China
作者:
Li Y.
;
Li Y.
;
Li Y.
;
Li Y.
;
Zhu L.
收藏
  |  
浏览/下载:26/0
  |  
提交时间:2013/03/25
A stable direct adaptive fuzzy decentralized control for reconfigurable modular manipulators is proposed to satisfy the concept of modular software. For the development of the decentralized control
the dynamics of reconfigurable manipulators is represented as a set of interconnected subsystems. The fuzzy logic systems are introduced to model the unknown dynamics of subsystem and the interconnection term by using adaptive algorithm. Based on Lyapunov stability theorem
the stability of the closed-loop systems can be verified. The simulation results are presented to show the effectiveness of the proposed adaptive fuzzy decentralized control schemes.