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CAS IR Grid
机构
长春光学精密机械与物... [7]
力学研究所 [1]
采集方式
OAI收割 [8]
内容类型
会议论文 [8]
发表日期
2013 [1]
2011 [2]
2009 [1]
2007 [2]
2006 [2]
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Behavior of interface crack in layered structure under actions of both stress wave and residual stress
会议论文
OAI收割
13th International Conference on Fracture(ICF13), 中国北京, 2013-06-16
作者:
Wu CW(吴臣武)
;
Cheng XX(程欣欣)
;
Yuan YC(袁雨辰)
收藏
  |  
浏览/下载:25/0
  |  
提交时间:2015/09/09
layered
initially
singularity
stressed
relaxation
thereby
A fuzzy control method based on information integration for double inverted pendulum (EI CONFERENCE)
会议论文
OAI收割
2011 2nd International Conference on Digital Manufacturing and Automation, ICDMA 2011, August 5, 2011 - August 7, 2011, Zhangjiajie, Hunan, China
作者:
Fan Y.
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  |  
浏览/下载:61/0
  |  
提交时间:2013/03/25
This article proposes a new fuzzy controller based on information integration. The mathematical model of Linear double inverted pendulum has been studied and estabLished with dynamics analytical method and LQR theory is used to design the optimal Linear inverted pendulum controller
then
the integration technology is used to design the variable parameters self-tuning fuzzy controller. Thereby
the fuzzy controller input variable dimension and the number of fuzzy control rules have been extremely reduced. Two controllers are designed for inverted pendulum system control and the comparison simulation experiments have been done. The results show that the controllers can both reaLize good control
and the fuzzy controller has higher precision
faster response
better stabiLity and robustness. 2011 IEEE.
Application of improved UKF algorithm in initial alignment of SINS (EI CONFERENCE)
会议论文
OAI收割
2011 2nd International Conference on Artificial Intelligence, Management Science and Electronic Commerce, AIMSEC 2011, August 8, 2011 - August 10, 2011, Zhengzhou, China
Su W. X.
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浏览/下载:21/0
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提交时间:2013/03/25
In order to improve the initial alignment accuracy and convergence rate of the SINS system
proposed the improved UKF algorithm (AUKF) based on the Unscented Kalman Filter (UKF). Noise statistical characteristics are mostly unknown in real systems
when it was effected by the initial value errors and dynamic model errors
AUKF algorithm can real-time adjust the covariance of the state vector and observation vector
and balance the right ratio of the state information and observation information in the filter results
thereby improving the system performance. The experimental results show: The Improved UKF Algorithm enhances the convergence speed and alignment accuracy effectively. 2011 IEEE.
A spherical catadioptric telescope system based on Cooke corrector group (EI CONFERENCE)
会议论文
OAI收割
Novel Optical Systems Design and Optimization XII, August 3, 2009 - August 4, 2009, San Diego, CA, United states
作者:
Zhang J.
;
Liu W.
;
Zhang J.
;
Zhang J.
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  |  
浏览/下载:31/0
  |  
提交时间:2013/03/25
To obtain a number of advantages in fabrication
testing and alignment
many designs in which spherical mirrors replace classical Cassegrain-form aspheric mirrors are present in the literature. However
spherical mirrors suffer from substantial spherical aberration and thereby require some form of corrector group. But in this case
the question encountered is that of making the basic optical configuration more complex. In this paper
a new design based on Cooke corrector group is presented for eliminating spherical aberration
which is believed to provide higher performance with less complexity than previous approaches. Besides
the cost and fabrication period will be extremely decreased. The telescope system using corrector group here can achieve good optical performance with f# of 10
full field of 0.5
obscuration of 1/3 and MTF (Modulation Transfer Function) of 0.48 corresponding to 50@lp/mm. 2009 Copyright SPIE - The International Society for Optical Engineering.
The cell thickness and twist angle measurement of twist nematic liquid crystal cell by rotation of a quarter-wave plate using fourier analysis method (EI CONFERENCE)
会议论文
OAI收割
Asia Display 2007, AD'07, March 12, 2007 - March 16, 2007, Shanghai, China
Cui H.-Q.
;
Ling Z.-H.
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  |  
浏览/下载:25/0
  |  
提交时间:2013/03/25
Proposed a new method of determining the cell thickness and the twist angle of twisted nematic liquid crystal cells
a quarter-wave plate was inserted between the liquid crystal cell and the analyzer
a stepper motor rotated the Retarder by 360
and measured the light intensity of every modulated point
solved the stokes parameters of polarization light exiting from the liquid crystal cell using Fourier analysis method
thereby determining the cell thickness and the twist angle. Experiments indicated that it is suitable for measuring the low-cell-gap accurately. In addition
it also can be applied to the measurement of the cell thickness and twist angle of single polarizer reflected liquid crystal cell.
Research on animal laser varicose treatment in CIOMP, CAS (EI CONFERENCE)
会议论文
OAI收割
Fifth International Conference on Photonics and Imaging in Biology and Medicine, September 1, 2006 - September 3, 2006, Wuhan, China
作者:
Zhang L.
;
Guo J.
;
Guo J.
;
Li D.
;
Zhang L.
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浏览/下载:16/0
  |  
提交时间:2013/03/25
The work on laser varicose treatment carried out in CIOMP
It provides minimal invasion
CAS cooperating with The First Clinical Hospital
often under local anesthesia and intravenous sedation thereby eliminating the need for general anesthesia
Jilin University is summarized. Dozens of animal experiments adopting dog and rabbit samples are made in a long time of several years. Different lasers are used
greatly shortens postoperative recovery term
including long pulse frequency-doubled Nd:YAG(532nm) and semiconductor laser(808nm). Dozens of animal experiments show that laser has good efficacy to occlude the vein vessels. It has precise adjustability and relatively short treatment time only needing outpatient office setting with high cost and effect rate
and it is highly safe with no side effects and no serious complications.
Compression of remote sensing image based on Listless Zerotree Coding and DPCM (EI CONFERENCE)
会议论文
OAI收割
ICO20: Remote Sensing and Infrared Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China
Chen S.-L.
;
Huang L.-Q.
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浏览/下载:32/0
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提交时间:2013/03/25
The data quantity of remote sensing image is very large. Furthermore
the lowest frequency subband contains the main energy of original image and reflects the coarse of original image after remote sensing image is transformed by wavelet
so it is very important to the reconstructed image. Therefore a hybrid image compression method based on Listless Zerotree Coding (LZC) and DPCM is presented
namely
the lowest frequency subband is compressed by DPCM and others are compressed by LZC. LZC is a kind of zerotree coding algorithm for hardware implementation
which is based on SPIHT and substitutes two significant bit maps for three lists in SPIHT algorithm. Thereby LZC significantly reduces the memory requirement and complexity during encoding and decoding procedure. But LZC doesn't recognize the significance of grandchild sets
so the PSNR values of LZC are lower than SPIHT's and the compression speed drops. It is improved by adding a significant bit map that recognizes the significance of grandchild sets. A comparison reveals that the PSNR results of the hybrid compression method are 2 dB higher than those of LZC
and the compression speed is also improved.
Study of removing striping noise in CCD image (EI CONFERENCE)
会议论文
OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
作者:
Liu H.
;
Liu H.
;
Liu H.
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浏览/下载:17/0
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提交时间:2013/03/25
Striping noise is the common system noise during formation of image using linear array CCD and has the character of periodicity
directivity and banding distributing. It can be caused by errors in internal calibration devices
or by slight gain/offset differences among the elements that conform the array of detectors. Striping noise covers up useful information in CCD image and brings adverse effect to image interpretation. On the basis of analyzing wavelet decomposed coefficient
the regularities of distribution about striping noise in wavelet coefficient is found
thereby the method of wavelet threshold selection which is suitable to striping noise distribution is put forward. According to Donoho's method about denoising using wavelet
the image including striping noise is processed. Comparing the power spectrum of processed image with the one of original image polluted by striping noise in frequency field
we find pulse brought by striping noise is removed and the goal which reserves image details and reduces stripes is achieved.