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Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共8条,第1-8条 帮助

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Experimental study on Multi-material composite surface polishing by Abrasive Water Jet 会议论文  OAI收割
Beijing, China, 2023.7.25-27
作者:  
Chen Z(陈哲);  Li XN(李新南);  Jiang ZB(姜自波);  Xu C(徐晨);  Duan R(段然)
  |  收藏  |  浏览/下载:49/0  |  提交时间:2024/03/19
Study on the Influence of Seismic Wave Parameters on the Dynamic Response of Anti-Dip Bedding Rock Slopes under Three-Dimensional Conditions 期刊论文  OAI收割
SUSTAINABILITY, 2022, 卷号: 14, 期号: 18
作者:  
Ren, Zhanghao;  Chen, Congxin;  Zheng, Yun;  Sun, Chaoyi;  Yuan, Jiahao
  |  收藏  |  浏览/下载:7/0  |  提交时间:2023/08/02
Back Analysis of Surrounding Rock Parameters in Pingdingshan Mine Based on BP Neural Network Integrated Mind Evolutionary Algorithm 期刊论文  OAI收割
MATHEMATICS, 2022, 卷号: 10, 期号: 10, 页码: -
作者:  
Zhang, Jianguo;  Li, Peitao;  Yin, Xin;  Wang, Sheng;  Zhu, Yuanguang
  |  收藏  |  浏览/下载:10/0  |  提交时间:2023/08/02
Effect of seawater ions on cyclopentane-methane hydrate phase equilibrium 期刊论文  OAI收割
FLUID PHASE EQUILIBRIA, 2018, 卷号: 458, 页码: 272-277
作者:  
Lv, Qiunan;  Zang, Xueru;  Li, Xiaosen;  Li, Gang
  |  收藏  |  浏览/下载:21/0  |  提交时间:2020/10/29
Information extraction from laser speckle patterns using wavelet entropy techniques (EI CONFERENCE) 会议论文  OAI收割
MIPPR 2011: Multispectral Image Acquisition, Processing, and Analysis, November 4, 2011 - November 6, 2011, Guilin, China
作者:  
Li X.-Z.;  Wang X.-J.
收藏  |  浏览/下载:38/0  |  提交时间:2013/03/25
A novel speckle patterns processing method is presented using multi-scale wavelet techniques. Laser speckle patterns generated from the sample contained abundant information. In this paper  we propose a method using wavelet entropy techniques to analyze the speckle patterns and exact the information on the sample surface. In our case  we used this approach to test the solar silicon cell surface profiles based on the sym8 orthogonal wavelet family. According different wavelet entropy values  the micro-structure of different solar silicon cell surfaces were comparative analyzed. Furthermore  we studied the AFM and reflective spectra of the wafer. Results show that the wavelet entropy speckle processing method is effective and accurate. And the experiment proved that this method is a useful tool to investigate the surface profile quality. 2011 SPIE.  
Study of experimental design and Response Surface method for surrogate model of computational simulation (EI CONFERENCE) 会议论文  OAI收割
2nd Annual Conference on Electrical and Control Engineering, ICECE 2011, September 16, 2011 - September 18, 2011, Yichang, China
Xi R.; Jia H.; Xiao Q.
收藏  |  浏览/下载:21/0  |  提交时间:2013/03/25
While the high-precision simulation is widely used in science and technology  Design of Experiment (DOE) based on Response Surface (RS) method can be employed in surrogate model to reduce the cost and error. In order to illustrate the relationship between parameters and response features  several DOE methods and Response Surface (RS) method are studied. The author used polynomial regression and RBF neural network based on orthogonal array to build a rocket aerodynamic discipline surrogate model respectively which proved their feasibility. From the results of the test case  conclusion is drawn that characteristic as well as acclimatization of DOE methods and different approximation should be considered for different issues  so the factors of cost and accuracy could reach a balance synthetically. 2011 IEEE.  
Miniaturize photoelectric stable platform (EI CONFERENCE) 会议论文  OAI收割
2010 International Conference on Computer Application and System Modeling, ICCASM 2010, October 22, 2010 - October 24, 2010, Shanxi, Taiyuan, China
Xue W.-Q.; Wang Y.-Y.; Dai M.
收藏  |  浏览/下载:76/0  |  提交时间:2013/03/25
In order to reduce the size and weight of the gimbal in a traditional stable platform and correct the disadvantage in size of the payload  the paper first improves the gimbal which is an important component of a stable photoelectric platform  that also is an important factor in affecting the size and weight of a stability platform. In this paper  a closed-form solution of 3-DOF manipulator is designed according mechanical arm design principles. This manipulator is formed by a three joint axes whose extended line is intersected at one point. A standard orthogonal coordinate system is set up for each rod in the manipulator. And then  rotation transformation matrix expression is obtained. At last in this paper  the manipulator arm-shaped method for solving solutions is description  and also  each parameter of the gimbal is calculated when the photoelectric detection devices at bottom reach the expected position. Test results show that the photoelectric stability platform with gimbal we designed is smaller  lighter and simpler than that traditional. Also  the packaging and size of the photoelectric will not be affected with this open structure. 2010 IEEE.  
Based on Householder transform of the Zernike polynomial wave front fitting method to solve active optics correction force (EI CONFERENCE) 会议论文  OAI收割
Infrared Materials, Devices, and Applications, November 12, 2007 - November 15, 2007, Beijing, China
作者:  
Wu X.-X.
收藏  |  浏览/下载:26/0  |  提交时间:2013/03/25
Corrective force solving is a critical technology of the active optics. A method to solve active optics corrective force is introduced  which is based on Householder transform of Zernike polynomial wave front fitting  this method is different from the traditional least square method and Gram-Schmid orthogonal method  because it does not bring ill-conditioned polynomial without constructing normal equation  so it can avoid calculation error  wave front fitting is precision. Based on the coefficient of the Zernike polynomial and the response function of the each actuator  the stiffness matrix of the primary mirror is built  and then adopting the damp least square method to calculate corrective force. Based on this method  cp400m test mirror is simulated many times  the calculation result approve: if the Householder transform is adopted  wave front fitting is precision  the result is stabilization and corrective effectiveness is better.