中国科学院机构知识库网格系统: 检索

Decomposition and estimation of the pulsed active power of the CPSS in the CFETR tokamak reactor based on the FFT and improved Prony methods 期刊论文 OAI收割
ENERGY REPORTS, 2022, 卷号: 8
作者: Hua, Yuting; Fu, Peng; Huang, Liansheng; Li, Shenghu

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收藏 | 浏览/下载：75/0 | 提交时间：2022/01/25

Active power decomposition Chinese Fusion Engineering Test Reactor (CFETR) Coil power supply system (CPSS) Exceeding of parameters Fast Fourier Transform (FFT) Prony method

A cluster-adjusted rank-based test for a clinical trial concerning multiple endpoints with application to dietary intervention assessment 期刊论文 OAI收割
BIOMETRICS, 2019, 卷号: 75, 期号: 3, 页码: 821-830
作者: Zhang, Wei; Liu, Aiyi; Tang, Larry L.; Li, Qizhai

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收藏 | 浏览/下载：62/0 | 提交时间：2020/01/10

generalized Behrens-Fisher hypothesis multivariate distributions nonparametrics rank statistics type I errors power of test

Research and experiment on viscous friction power loss of deep-sea electric manipulator 会议论文 OAI收割
Kobe, Japan, May 28-31, 2018
作者: Fan YL(范云龙); Zhang QF(张奇峰); Wang HL(王海龙); Bai YF(白云飞); Zhang AQ(张艾群)

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收藏 | 浏览/下载：38/0 | 提交时间：2019/02/09

deep-sea electric manipulator model of viscous power loss pressure test of oil-filled joint

Development of fiber laser system for a photocathode gun 期刊论文 OAI收割
HIGH POWER LASER AND PARTICLE BEAMS, 2015, 卷号: 27, 期号: 5, 页码: 51002
作者: Xu JQ(徐金强); Sun DR(孙大睿); Xu; Jinqiang; Sun

收藏 | 浏览/下载：24/0 | 提交时间：2016/04/18

Kinds of lasers Laser products Laser systems Main amplifiers Output power Repetition rate Second harmonics Test systems

Design of semi-physical simulation for small satellite by virtual display (EI CONFERENCE) 会议论文 OAI收割
2011 3rd International Conference on Mechanical and Electronics Engineering, ICMEE 2011, September 23, 2011 - September 25, 2011, Hefei, China
Xu K.; Lv Y.; Jin G.

收藏 | 浏览/下载：20/0 | 提交时间：2013/03/25

Semi-physical simulation of attitude control system is the more synthetically test and verify for designing of small satellite control system. It is an important means of small satellite development. However the results of current semi-physical simulation system have a lot of non-intuitive. Compare with the actual environment the simulation environment still has striking disparity. So the shortcomings affect precision of simulation. Based on the virtual display technology the group semi-physical simulation system has been constructed for attitude control of small satellite due to the combination with xPC real-time environment the simulation computer high-precision single-axis air-bearing turntable reaction wheel air thrust device fiber gyroscopes sensors synchronizer power subsystem and wireless devices virtual display computer etc. Semi-physical simulation achieved the visual simulation in orbit and tracked new information of virtual environment of space into real-time simulation computer. Simulation results show that the simulation system for real-time attitude and orbit position of small satellite semi-physical simulation has an excellent display effect. At the same time Real-time transfuse of orbit information provides a more accurate space environment simulation. The simulation system of small satellite attitude control to design and evaluate the more direct and convenient. (2012) Trans Tech Publications Switzerland.

Study on sub-pixel techniques for accurate image measurement of displacement (EI CONFERENCE) 会议论文 OAI收割
2011 2nd International Conference on Advanced Measurement and Test, AMT 2011, June 24, 2011 - June 26, 2011, Nanchang, China
作者: Zhang X.; Zhang X.; Zhang X.

收藏 | 浏览/下载：17/0 | 提交时间：2013/03/25

The high resolving power camera was often used to improve the precision of measuring system although its price is high because the accuracy of image measure was limited by the pixel resolving ability of camera. A method of one dimension gray level quadrature sub-pixel to detect edge was presented. This method was applied to measure the displacement of measuring head on 3-coordinate measuring machine. The data of test was shown that this system can distinguish displacement 0.001mm. it is higher accuracy than pixel level. So this method is convenient and fast fit to track and measure the moving object. It is obvious that this method can save the cost of hardware.

Research of real-time control and calibration on laser energy simulator for optoelectronic confrontation HWIL system (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Electronics, Communications and Control, ICECC 2011, September 9, 2011 - September 11, 2011, Ningbo, China
作者: Wang J.-J.

收藏 | 浏览/下载：20/0 | 提交时间：2013/03/25

In the paper real-time control and calibration on laser energy simulator is studied which is based on Optoelectronic confrontation hardware-in-loop (HWIL) simulation test system. The control of the laser energy is necessary in simulation system and it is vital to make the test successfully. The laser energy simulator simulates the attenuation process and the changing of laser energy by the continuous rotation of Glan prism. To get high accuracy of laser power outdoor the accurate calibration of the rotation position and the attenuation process in energy simulator is necessary. We apply dual calibration on the laser energy simulator and the feasibility was proved by the calibration data. 2011 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：20/0 | 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.

Study of three-mode parametric instability (EI CONFERENCE) 会议论文 OAI收割
8th Edoardo Amaldi Conference on Gravitational Waves, June 21, 2009 - June 26, 2009, New York, NY, United states
Liang F.; Zhao C.; Gras S.; Ju L.; Blair G.

收藏 | 浏览/下载：21/0 | 提交时间：2013/03/25

The effect of parametric instability in advanced interferometric gravitational wave detectors is a potential problem for their proper operation. Great efforts have been made to study the onset of parametric instabilities and to find ways to control them. Here we present an experimental design for studying parametric instability in a 72 m cavity with suspended high quality fused silica mirrors. With 5 W input power and 20 kW circulation power inside the cavity it is predicted that parametric instability will occur. The resonant condition of parametric instability can be met by thermally tuning the radius of curvature of a test mass. We will present simulation results of parametric gains for different radii of curvature of a test mass. The simulation results will provide the basis for designing the thermal tuning and observation parametric instability experiments. This will provide a test bed for studying parametric instability and its control for next generation detectors. 2010 IOP Publishing Ltd.

The novel facet coating technology for 808nm semiconductor laser (EI CONFERENCE) 会议论文 OAI收割
2010 Academic Symposium on Optoelectronics and Microelectronics Technology and 10th Chinese-Russian Symposium on Laser Physics and Laser Technology, RCSLPLT/ASOT 2010, July 28, 2010 - August 1, 2010, Harbin, China
作者: Liu Y.; Qin L.; Li Z.; Li Z.; Wang L.

收藏 | 浏览/下载：21/0 | 提交时间：2013/03/25

A novel facet coating technology is presented by studying catastrophic optical mirror damage mechanism of semiconductor laser. In this technology semiconductor laser are cleaved in the air and the surface oxide layer is removed with a low energy ion source flowed immediately by coating the facet with thin ZnSe layer of 20 nm. The function of this layer is to protect semiconductor laser facet and prevent impurity particles diffusing to the facet. Finally the facet is coated with oxidative optical film. The test results show that the output power of the semiconductor laser with the ZnSe coated layer is 13% higher than that of the Si coated layer and 47% higher than that of the oxide coated film. The device coated oxide film is damaged when current is 4.5 A and the device coated with Si layer is damaged when current is 5.5 A the final failed device is coated with ZnSe layer. In conclusion the method of coating ZnSe layer on the semiconductor laser facet can prevent effectively the catastrophic optical mirror damage and increase the output power of semiconductor lasers. 2010 IEEE.