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Structural Design and Verification of an Effective-Area Measurement Device Detection System
期刊论文
SENSORS, 2023, 卷号: 23, 期号: 19, 页码: 10
作者:
Chen, Xiangzi
;
Yun, Ziping
;
You, Ting
;
Quan, Xiangqian
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  |  
浏览/下载:5/0
  |  
提交时间:2023/11/06
effective-area method
absolute solar irradiance radiometer
measurement device
design of detection system
Prediction of the dynamic contact resistance of circuit breaker based on the kernel partial least squares
期刊论文
IET GENERATION TRANSMISSION & DISTRIBUTION, 2018, 卷号: 12, 页码: 1815-1821
作者:
Liu, Yakui
;
Zhang, Guogang
;
Qin, Hao
;
Geng, Yingsan
;
Wang, Jianhua
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  |  
浏览/下载:3/0
  |  
提交时间:2019/11/26
contact resistance
laser scanning microscope
dynamic contact resistance measurement
contact finger
circuit breaker
opening velocity
regression analysis
dynamic contact resistance curve prediction
ablation characteristics
effective contact area
DRM test
laser ablation
injected current
circuit breakers
current carrying dry sliding friction conditions
optical microscopes
least mean squares methods
kernel partial least squares regression method
The spatial scaling effect of the discrete-canopy effective leaf area index retrieved by remote sensing
期刊论文
science china earth sciences, 2013
Fan WenJie
;
Gai YingYing
;
Xu XiRu
;
Yan BinYan
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  |  
浏览/下载:5/0
  |  
提交时间:2015/11/10
spatial scaling effect
discrete canopy
effective leaf area index
directional second-derivative method
CONIFER FOREST CANOPY
REFLECTANCE MODEL
LAI
VALIDATION
MODIS
SATELLITE
PARAMETER
PRODUCTS
LEAVES
Investigation on dispersion property of a novel photonic crystal fiber with square array air holes
会议论文
Shenyang, Liaoning, China, July 27, 2012 - July 29, 2012
作者:
Yanjuna, Liu
;
Tongb, Dai
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浏览/下载:0/0
  |  
提交时间:2020/11/15
Beam propagation method
Dispersion (waves)
Electronics engineering
Photonic crystal fibers
Refractive index
Air holes
Dispersion characteristics
Dispersion parameters
Dispersion properties
Effective area
Effective refractive index
Fundamental modes
Hole diameter
Square array
Structural parameter
Structure parameter
The Research of real time auto-recognition of the moire fringe (EI CONFERENCE)
会议论文
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Wang M.-J.
;
Wu Z.-G.
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浏览/下载:15/0
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提交时间:2013/03/25
Measuring the movement of raster by the method of moire fringe has the advantage of high sensitivity
high resolution and non-contacted measurement. The characteristic of moire fringe is that the image is white alternate with black
the angle of the stripes is uniform
the width of the stripes is uniform
the terminators of the stripes aren't clear. A fast method that can figure out the width and angle of the moire fringe precisely is put forward in this paper. It calculates the angle the stripes firstly. According to the principle of the minimum mean squared error (MMSE)
the closer a series of data is
the smaller the value of the MMSE will be. The method is described as follows: It takes the image's center as the origin
180 beelines pass through the origin with the same angle interval. it calculates the value of the minimum mean squared error of the 180 beelines and find out the least one among those
then the angle of the moire fringe comes out primarily. In order to improving the calculating precision of moire fringe
60 equal angles are divided in the neighborhood of the angle
then a precise angle of moire fringe is calculated according to the principle of the MMSE. After getting out the angle of the moire fringe
we begin to calculate the width of moire fringe. A line vertical with the moire fringe is drawn
and we can get the width of the moire fringe by the vertical line. In order to get over the influence of the noise
an effective area with the shape of diamond is selected in the image. The data of area is accumulated and projected according to the direction of moire fringe
and a sine curve come out. The width of moire fringe can be obtained by getting the position of the first wave crest
the position of the last wave crest and the number of wave crest. Experiments prove that the precision of the method put forward in this paper is enhanced in comparison with the traditional frequency method
the precision of width calculation achieves to 99.6% according to the evaluation indicators of width detection error. The computing speed is boosted largely compared with traditional method
and it can achieve with 15 ms
that satisfying the demand of real time. 2011 SPIE.
Bend-Induced Distortion in Large Mode Area Holey Fibre
期刊论文
中国物理快报:英文版, 2008, 卷号: 第25卷, 页码: P1661-1663
作者:
Tan XiaoLing Geng YouFu Zhang TieLi Wang WeiNeng Wang Peng Yao JianQuan
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  |  
浏览/下载:2/0
  |  
提交时间:2019/11/26
bend-induced mode distortion/bent holey fibres/distorted mode distribution/mode effective area reduction/finite difference method
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