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长春光学精密机械与物... [4]
自动化研究所 [2]
数学与系统科学研究院 [1]
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OAI收割 [7]
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会议论文 [4]
期刊论文 [3]
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2020 [1]
2013 [3]
2009 [1]
2006 [1]
2003 [1]
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Regularization by Noise for the Point Vortex Model of mSQG Equations
期刊论文
OAI收割
ACTA MATHEMATICA SINICA-ENGLISH SERIES, 2020, 页码: 15
作者:
Luo, De Jun
;
Saal, Martin
  |  
收藏
  |  
浏览/下载:22/0
  |  
提交时间:2020/05/24
Point vortices
modified Surface Quasi-Geostrophic equations
space-dependent noise
absolute continuity
Weighted data fusion algorithm in the application of visual measurement network system (EI CONFERENCE)
会议论文
OAI收割
2012 International Conference on Mechatronics and Control Engineering, ICMCE 2012, November 29, 2012 - November 30, 2012, Guangzhou, China
作者:
Zhang Y.-c.
;
Zhou J.
收藏
  |  
浏览/下载:28/0
  |  
提交时间:2013/03/25
For the problem on the deviation of actual measurement values between different network positions of visual measurement network system
so present the weighted data fusion algorithm. To distribute the weight coefficients according to the stability of eigenvector and fuse the coordinates
finally get the ultimate expression of fusion estimate. The experiment results present the maximum absolute tolerance of the fusion results is 0.039mm via the weighted data fusion algorithm
the maximum one via traditional data fusion algorithm of the center of point set is 0.056mm
Repeatedly measure 50 times
compared with the traditional algorithm
proposed weighted data fusion algorithm has much better precision and better stability. (2013) Trans Tech Publications
Switzerland.
LABTM control system based on FPGA (EI CONFERENCE)
会议论文
OAI收割
2nd International Conference on Mechatronics and Applied Mechanics, ICMAM 2012, December 8, 2012 - December 9, 2012, Taiwan
作者:
Wang Y.
;
Yu P.
;
Yu P.
;
Wang Y.
;
Wang Y.
收藏
  |  
浏览/下载:158/0
  |  
提交时间:2013/03/25
This paper presents the digital PI control method for design and simulation of a high precision limited angle brushless torque motor control system in Field Programmable Gate Array device (FPGA). The direct drive structures which are widely applied in many servo control fields. Matlab Xilinx System GeneratorR toolbox based on Fixed-Point Arithmetic is used to design the digital PI controller using DSP architecture
plot the responses of the control system and generate the VHDL source code. The control system model consists of a digital PI
a real LABTM
and a real absolute Inductosyn
encoder to rpm and position blocks. Through loading generated codes in process of the simulation that built by the digital discrete model
it is verified that the rising time of current loop is only 1.2ms
and rate loop is 8ms
overshoot is rarely 4.2%. Finally
the comprehensive positioning accuracy of system can reach up to 5 arc sec
and the rate jitter achieves 5% with the 4 arc sec accuracy absolute Inductosyn. (2013) Trans Tech Publications
Switzerland.
Data normalization of single camera visual measurement network system (EI CONFERENCE)
会议论文
OAI收割
2012 International Conference on Information Technology and Management Innovation, ICITMI 2012, November 10, 2012 - November 11, 2012, Guangzhou, China
作者:
Zhang Y.-C.
;
Zhou J.
收藏
  |  
浏览/下载:27/0
  |  
提交时间:2013/03/25
With the development of visual measurement system
Normalize the measured coordinates into the same world coordinate system
Apply in the three coordinate measuring machine(CMM) to have the simulation experiment
So the data normalization has the advantage of more high precision. (2013) Trans Tech Publications
the visual measurement system of single camera which applied in the imaging theory of optical feature points
then get the global data
the result indicates that the maximum absolute tolerance between the normalization coordinates via the center of point set and the ones measured by CMM directly is 0.058mm
Switzerland.
it has been widespread used in the modern production. Due to the limit of the environment in scene
and achieve the overall measurement
the visual measurement system of single camera could not measure the shield between the measured objects each other. Focus on this problem
But the one between the coordinate repeatedly measured at the position of one network control point is 0.066mm
present a kind of the the knowledge of measurement network based on the visual measurement of single camera
set up the measurement network system via the multi-control points. Measure the optical feature points in every network control point via the visual measurement system of single camera
Real-time matching algorithm of navigation image based on corner detection (EI CONFERENCE)
会议论文
OAI收割
International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Imaging Detectors and Applications, June 17, 2009 - June 19, 2009, Beijing, China
作者:
Zhang T.
收藏
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浏览/下载:59/0
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提交时间:2013/03/25
In order to meet requirement of real-time and high accuracy in image matching aided navigation
SSDA algorithm is used to match remote sensing image and template image coarsely
a fast and effective algorithm of remote sensing image matching based on corner detection is put forward. With the combination of rough and fine match
when the matching result is bigger than one to count absolute value sum of energy difference of characteristic point energy to realize fine match of remote sensing image and template image to locate the position of template image in remote sensing image accurately. Simulation experiment proves that the matching of a remote sensing image resolution of 1018*1530 and a template image resolution of 150*90 can be fulfilled within 2.392 second
wavelet transform is used to acquire low frequency component to realize image compression to decrease calculation work and increase matching speed. Harris corner detection algorithm is used to detect corner of remote sensing image and template image and energy of every corner is calculated
the algorithm is robust and effective
real time image navigation can be achieved. 2009 SPIE.
Euclidean reconstruction of a circular truncated cone only from its uncalibrated contours
期刊论文
OAI收割
IMAGE AND VISION COMPUTING, 2006, 卷号: 24, 期号: 8, 页码: 810-818
作者:
Wu, Yihong
;
Wang, Guanghui
;
Wu, Fuchao
;
Hu, Zhanyi
收藏
  |  
浏览/下载:28/0
  |  
提交时间:2015/11/07
circular truncated cone or cylinder
absolute conic
circular point
camera intrinsic parameter
camera extrinsic parameter
Euclidean reconstruction
Planar pattern for automatic camera calibration
期刊论文
OAI收割
OPTICAL ENGINEERING, 2003, 卷号: 42, 期号: 6, 页码: 1542-1549
作者:
Zhang, BW
;
Li, YF
;
Wu, FC
收藏
  |  
浏览/下载:13/0
  |  
提交时间:2015/11/08
planar pattern
automatic calibration
plane at infinity
absolute point
vanishing point