中国科学院机构知识库网格系统: 检索

The research activities on test platform of high payload transporter joint for a tokamak 期刊论文 OAI收割
FUSION ENGINEERING AND DESIGN, 2022, 卷号: 180
作者: Wang, Yan; Wang, Li; Choi, Chang-Hwan; Bai, Xiaowei; Yao, Damao

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收藏 | 浏览/下载：17/0 | 提交时间：2022/12/23

Remote handling Test platform Scheme design Strength analysis Load test

Design a Suitable Test Scheme for Triggering Bypass Protection Test of ITER PF Converter Unit 期刊论文 OAI收割
IEEE TRANSACTIONS ON PLASMA SCIENCE, 2018, 卷号: 46, 期号: 5, 页码: 1318-1322
作者: Zhang, Xiuqing; Gao, Ge; Fu, Peng; Song, Zhiquan; Wang, Bo

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收藏 | 浏览/下载：17/0 | 提交时间：2019/06/10

Bypass international thermonuclear experimental reactor (ITER) poloidal field (PF) converter unit test scheme

Momentary Current Test of Enclosed AC Busbar for ITER PF Converter Performed on ITER AC Test Platform 期刊论文 OAI收割
JOURNAL OF FUSION ENERGY, 2015, 卷号: 34, 期号: 3, 页码: 552-558
作者: Xia, Minxue; Song, Zhiquan; Li, Jinchao; Fu, Peng

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收藏 | 浏览/下载：27/0 | 提交时间：2019/06/03

Isolated phase bus ITER PF converter Momentary current test Test scheme ITER AC test platform

On the numerical technique for the simulation of hypervelocity test flows 期刊论文 OAI收割
Computers & Fluids, 2015, 卷号: 106, 页码: 12-18
作者: Hu ZM(胡宗民); Wang C(王春); Jiang ZL(姜宗林); Khoo BC; Hu ZM(胡宗民)

收藏 | 浏览/下载：31/0 | 提交时间：2014/11/27

Hypervelocity test flow DCD scheme Flux-splitting Spurious oscillation

Structural design of large aperture rectangular mirror for space telescope (EI CONFERENCE) 会议论文 OAI收割
2nd International Conference on Civil Engineering and Transportation, ICCET 2012, October 27, 2012 - October 28, 2012, Guilin, China
作者: Li Z.; Li Z.

收藏 | 浏览/下载：43/0 | 提交时间：2013/03/25

Structural design of large aperture mirror is one of the key technologies for space telescope development. To meet the requirements of high stiffness strength and thermal dimensional stability some factors such as support scheme materials selection lightweight design and flexible support design were taken into account. The three supports location of the mirror was determined according to the modal analytical solution. By adjusting the parameters of flexure hinge influences of gravity assembly stress and thermal stress on the mirror were reduced obviously. Finite element analysis (FEA) results indicate that the surface accuracy reach to rms10.2nm and 10.8nm under the gravity along optical axis direction and 5C uniform temperature rise respectively the fundamental frequency of the mirror component is 268Hz. Dynamics test shows that the first order natural frequency is 256Hz which shows an error less than 5% compared to FEA results. (2013) Trans Tech Publications Switzerland.

Design and experimental research of a new type focus mechanism used in space-based telescope (EI CONFERENCE) 会议论文 OAI收割
2012 9th IEEE International Conference on Mechatronics and Automation, ICMA 2012, August 5, 2012 - August 8, 2012, Chengdu, China
作者: Wang D.

收藏 | 浏览/下载：34/0 | 提交时间：2013/03/25

The position of focal plane will be changed because of temperature fluctuation and vacuum environment. In order to make the telescope work well positioning accuracy of the mechanism is 0.008mm. The performance satisfies the need of precision a focusing mechanism is needed. To majority of large space-based telescopes and the scheme design is reasonable and practicable. 2012 IEEE. the general way to do this would be to use a reflector which was located in the backfocal distance. One of typical schemes of this mechanism was introduced however because of the big axial size the mechanism can't be used when the size of the enclosure was limited. A new type of focusing mechanism was introduced which has such advantages of small size high accuracy and low mass. The design and test methods had been discussed. According to the results the repeatability positioning accuracy is 0.0025mm

The research on test scheme of the digital Electromechanical Actuator based on CAN Bus (EI CONFERENCE) 会议论文 OAI收割
2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China
作者: Zhang J.; Zhang J.; Zhang Y.; Zhang J.

收藏 | 浏览/下载：33/0 | 提交时间：2013/03/25

In order to realize the digital of Electromechanical Actuator(EMA) control system the CAN Bus which has efficient reliable performance and flexible network modes works as data interface.The EMA test scheme is designed based on the CAN Bus.First of all the microcontroller DSP with the CAN Bus works as the core of the EMA control system circuit boards.Then the CAN Bus test network is established with the EMA Ground Test System and Autopilot computer.The function and self-check of the EMA canbe conveniently tested by the network and the result of the test canbe easily displayed in the PC.Finally the CAN Bus test network is established with the EMA the Frequency Characteristics Scanner and etc.The purpose is to test the performance of the EMA.The result of the test can be intuitively showed on the Frequency Characteristics Scanner.In a word the application of the CAN bus provides a new method to test the EMA and reference to engineering the digital EMA which has vital significance. 2011 IEEE.

Image compression based on contourlet and no lists SPIHT (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
作者: Zhang S.

收藏 | 浏览/下载：46/0 | 提交时间：2013/03/25

The volume of raw image data captured by the high resolution camera is extremely huge. Thus the efficient image compression method should be used to decrease the bit rate. The image compression method based on wavelet is used more widely nowadays. However two dimensional wavelet is only the tensor product of the one dimensional wavelet whose support region of basis function is extended from interval to square. Contourlet is an image multiscale geometric analysis tool which could represent image sparsely and has strong capability of nonlinear approximation. The basis function of contourlet is multidirectional and anisotropic. Nevertheless contourlet is redundant. So the non-redundant Wavelet Based Contourlet Transform (WBCT) is used in this paper. The SPIHT algorithm is very efficient way to coding the significant coefficients. And the improved no lists SPIHT is more easy to implemented by hardware. Image compression method based on the combination of both wavelet based contourlet transform and no lists SPIHT coding is proposed in the paper. Experiment shows that compared to wavelet based scheme the contourlet scheme can reserve the texture of the image. For barbara test image when coding at low bit rate the PSNR can improve about 0.2dB. 2010 IEEE.

Design and analysis of Roll-Swing imaging seeker scan scheme (EI CONFERENCE) 会议论文 OAI收割
2010 2nd International Conference on Industrial Mechatronics and Automation, ICIMA 2010, May 30, 2010 - May 31, 2010, Wuhan, China
Bai Y.; Liu B.; Jia H.; Guo L.

收藏 | 浏览/下载：25/0 | 提交时间：2013/03/25

To achieve an optimum scan area and target stay time for Roll-Swing imaging seeker the scanning process is analyzed. The method of ground imaging area calculation is proposed in this paper. A kind of Roll-Swing imaging frame mechanism is introduced. The flight process simulation base on real flight data is realized. According to imaging sensor parameters and flight data a new scan scheme method is proposed and a new scan scheme is designed. The new scan scheme is compared to traditional scan scheme from different guide lines. The test results indicate that the new scan scheme satisfy requirement of the real flight experiment. 2010 IEEE.

System design on a field emission with phosphor detection (EI CONFERENCE) 会议论文 OAI收割
2009 International Symposium on Liquid Crystal Science and Technology, August 2, 2009 - August 5, 2009, Kunming, China
作者: Li Y.; Sun T.; Li Y.; Li Y.; Li Y.

收藏 | 浏览/下载：19/0 | 提交时间：2013/03/25

It is well-known that the phosphor is widely used for the field emission display (FED) and its luminescent and temperature properties are very important for the effect of display. In this paper we propose a measurement scheme for the phosphor and design a test-equipment to test the luminescent and temperature properties of phosphor. Furthermore the equipment can also be used for the life-test of the phosphor because it can generate a great excitation power. Finally there are design principle structure and some data and result which we obtained in the experiment. These data will be very useful for the design of FED. (2010) Trans Tech Publications.