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长春光学精密机械与物... [6]
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会议论文 [12]
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Research on the intelligent control method of wind turbine grid connection without load
会议论文
Xian, China, August 7, 2020 - August 9, 2020
作者:
Ren, Jing
;
Wang, Shudong
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  |  
浏览/下载:5/0
  |  
提交时间:2020/11/15
Clustering algorithms
Electric power transmission networks
Fuzzy control
Fuzzy neural networks
Wind turbines
Control of wind turbines
Control strategies
Conventional control
Fitting accuracy
Fitting precision
Fuzzy control rules
Grid connection without loads
Nearest neighbour
Research on mirror surface shape of space camera fitting based on SVD
会议论文
Beijing, China, 2019-07-07
作者:
Huang, Tuo
;
Chen, Rong-Li
;
Chu, Chang-Bo
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  |  
浏览/下载:3/0
  |  
提交时间:2020/03/04
mirror surface shape
Zernike polynomials
spherical mirror
fitting precision
Zernike polynomials terms
singular value decomposition
Research on the calibration method of reference flat based on gravity deformation
会议论文
作者:
Zhu, Xueliang
;
Zhao, Siwei
;
Tian, Ailin
;
Zhao, Huiying
;
Liu, Bingcai
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  |  
浏览/下载:11/0
  |  
提交时间:2019/11/19
Calibration method
Gravity deformation
High-precision
Large caliber
Simulation tests
Surface detection
Surface shape
Zernike polynomial fitting
Laser tracker in geometric precision detection for large horizontal lathe
期刊论文
Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University, 2013, 卷号: 47, 期号: [db:dc_citation_issue], 页码: 74-79
作者:
Deng, Yufen
;
Guo, Junjie
;
Wang, Jindong
;
Li, Haitao
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  |  
浏览/下载:3/0
  |  
提交时间:2019/12/03
Auxiliary measuring
Cylindrical fitting
Geometric precision
Guide rail
Laser tracker
Principal axis
Time-sharing
Virtual axis
Simplified hysteretic model for magneto-rheological damper with parameter sensitivity analysis
期刊论文
Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University, 2013, 卷号: 47, 期号: [db:dc_citation_issue], 页码: 102-107
作者:
Xue, Xiaomin
;
Sun, Qing
;
Wu, Xiaohong
;
Zhang, Ling
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  |  
浏览/下载:9/0
  |  
提交时间:2019/12/10
Bouc Wen model
Fitting precision
Hysteresis curve
Hysteretic model
Magneto- rheological dampers
Model parameters
Parameter sensitivity analysis
Physical significance
逐点内插法建立DEM的研究
期刊论文
http://epub.edu.cnki.net/grid2008/brief/detailj.aspx?filename=chkd200901080&dbcode=CJFQ&dbname=CJFQ2009, 2012, 2012
兰燕
;
王明华
;
刘珊红
;
戴晓爱
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  |  
浏览/下载:3/0
  |  
提交时间:2017/06/19
移动拟合
加权平均
精度评定
权函数
mobile camber fitting
precision evaluation
distance-weighted average
weight function
P208
Projector calibration method based on projective transformation for structured light measurement system
期刊论文
Zhongguo Jiguang/Chinese Journal of Lasers, 2012, 卷号: 39, 期号: [db:dc_citation_issue]
作者:
Gao, Zhihua
;
Wang, Zhao
;
Huang, Junhui
;
Gao, Jianmin
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  |  
浏览/下载:2/0
  |  
提交时间:2019/12/10
Corresponding relations
Function fitting
Parameter calibration
Parameters calibrations
Projective transformation
Projector calibration
Structured-light measurement
System measurement precision
Choice of optimized scheme parameters of neural networks based on error handling
期刊论文
Advances in Information Sciences and Service Sciences, 2012, 卷号: 4, 期号: [db:dc_citation_issue], 页码: 76-82
作者:
Zhao, Yan
;
Wei, Wei
;
Tang, Xiaojun
;
Zhao, Minli
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  |  
浏览/下载:8/0
  |  
提交时间:2019/12/10
Error processing
Fitting functions
Fitting precision
Neural network (nn)
Overtraining
Parameter optimization
Simulation example
Training goals
The Establishment of Geodetic Datum in Jiaonan City
会议论文
作者:
Huang, Jun
;
Xing, Zhaobo
;
Fang, Xueling
;
Wang, Debao
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  |  
浏览/下载:2/0
  |  
提交时间:2019/12/05
Geodetic Surveying
Datum
GPS
Data Processing
Elevation Fitting
Precision
Reliability
Design of motion compensation mechanism of satellite remote sensing camera (EI CONFERENCE)
会议论文
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.
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  |  
浏览/下载:42/0
  |  
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.
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