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Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共7条,第1-7条 帮助

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Automatic simulation of soil-rock mixture seepage using image model directly 期刊论文  OAI收割
COMPUTERS AND GEOTECHNICS, 2025, 卷号: 186, 页码: 14
作者:  
Shen, Xinying;  Wu, Jie;  Song, Zhenzhen;  Jia TS(贾珽朔)
  |  收藏  |  浏览/下载:1/0  |  提交时间:2025/08/18
The Dynamic Processes of Sea Ice on the East Coast of Antarctica-A Case Study Based on Spaceborne Synthetic Aperture Radar Data from TerraSAR-X 期刊论文  OAI收割
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2016, 卷号: 9, 期号: 3, 页码: 1187-1198
作者:  
Liu, Huiying;  Li, Xiao-Ming;  Guo, Huadong
收藏  |  浏览/下载:43/0  |  提交时间:2017/04/24
PID control of glucose concentration in subjects with type 1 diabetes based on a simplified model: An in silico trial (EI CONFERENCE) 会议论文  OAI收割
10th World Congress on Intelligent Control and Automation, WCICA 2012, July 6, 2012 - July 8, 2012, Beijing, China
作者:  
Yu L.
收藏  |  浏览/下载:42/0  |  提交时间:2013/03/25
An artificial pancreas system (APS) mimics the function of a real pancreas through monitoring a diabetic's blood glucose and administering the right dose of insulin via an automatic control loop. It is hailed as a promising cure of diabetes  though this technology is still years away from commercial use due to a few technological bottlenecks. The simulation model of insulin-glucose metabolism of type 1 diabetes mellitus (T1DM) is an essential part of APS. In order to simplify the parameter identification task so that the model can be implemented electronically with ease  this paper presents a simplified model based on Routh approximation model reduction method. The results show that the approximation error between the simplified model and the original model is so small that can be neglected. Based on the simplified model  a PID controller is designed to maintain normoglycemia (90mg/dl) in subjects with T1DM. The in silico simulation results show that the glucose concentration is controlled well  the risk of hyperglycemia and hypoglycemia is reduced a lot. This suggests that the simplified model describes the insulin-glucose metabolism process accurately  and the PID control algorithm is well-suitable to guide the further development of an APS. 2012 IEEE.  
Research on image restoration of Roll-Swing imaging seeker (EI CONFERENCE) 会议论文  OAI收割
3rd IEEE International Conference on Advanced Computer Control, ICACC 2011, January 18, 2011 - January 20, 2011, Harbin, China
作者:  
Zhang H.;  Zhang H.
收藏  |  浏览/下载:38/0  |  提交时间:2013/03/25
To achieve a correct image receiving for Roll-Swing imaging seeker  the mechanism and imaging process is analyzed. The causes of image rotation are discussed. The influence of the frame encoders' precision on imaging de-rotation quality is analyzed. The Roll-Swing imaging seeker is designed for high-speed aerocraft  thus the received images are greatly degraded due to atmospheric turbulence. A new method of image restoration is proposed for turbulence-degraded images in this paper. The method is to get point spread function (PSF) based on the estimation of optical transfer function (OTF) according to the optical system design simulation. Finally  to obtain the restored image  constrained least squares filtering is used with the known PSF. The experiment results indicate that the new restoration method has a favorable effect to satisfy requirement of the automatic target recognition. 2011 IEEE.  
Development of the adjoint model of a canopy radiative transfer model for sensitivity study and inversion of leaf area index SCI/SSCI论文  OAI收割
2008
Qin J.; Liang S. L.; Li X. W.; Wang J. D.
收藏  |  浏览/下载:33/0  |  提交时间:2012/06/08
Study of high precision non-contact measurement based on CCD (EI CONFERENCE) 会议论文  OAI收割
4th International Conference on Information Technology and Applications, ICITA 2007, January 15, 2007 - January 18, 2007, Harbin, China
Lin L.; Yun F.
收藏  |  浏览/下载:27/0  |  提交时间:2013/03/25
In this paper a method that measures relatively positionrelationshipquickly and accurately between two vehicles both on a horizontal plane is introduced. When the linear CCD camera placed on the end of manipulator scans two point targets located on the other vehicle  by virtue of the spatial intersection principle and trigonometry theorem  the relative position relationship between the loading vehicles and launching ones can be gotten(i.e. the spatial coordinate parameters of x  y  z and the angle displacement ). At the same time the paper establishes that the measurement error of length is less than 1mm  by analysis of thee rror analysis and the simulation of computer. The angle displacement is less than 3  which satisfies the technical requests. So the vehicle orientation and loading missiles can be both done at the shortest time. It meets the demand of centralization between the measurement and execution. Forboth automatic transshipment and spatial position relationship measurement  the study is valuable. And the manipulator is measure device as well as executive one so that residual inherent error decreases according to identical reference principle. Therefore the measure precision can be improved greatly.  
Application of linear CCD for position measurement (EI CONFERENCE) 会议论文  OAI收割
ICO20: Optical Devices and Instruments, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Fu Y.;  Liu L.;  Liu L.
收藏  |  浏览/下载:35/0  |  提交时间:2013/03/25
A method that measures relatively position relation between two vehicles fleetly and accurately that are both on a horizontal plane is proposed in the article. When manipulator rotates horizontally  that of angle is less than 26  the linear CCD vidicon that is on the end of manipulator on the loading vehicle scans two point targets that are on the launching vehicle  which satisfies technical requests. So the method is feasible. The research is not only significant for missile of automatic transshipment  and then we can utilize spatial intersection principle and trigonometry theorem to get relatively position relationship. I.e. the coordinate parameters: x  but also is valuable in theoretic research on method of measuring spatial position relationship.  y  z  . Error analysis and the simulation on computer validate: the measurement error of length is less than 0.84mm