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浏览/检索结果: 共11条，第1-10条 帮助

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Detector control system for Daya Bay Reactor Neutrino Experiment 期刊论文  OAI收割
Science China(Technological Sciences), 2013, 期号: 8, 页码: 1966-1973
作者:  Zhang SH(张书华);  Wang YF(王贻芳);  Ye M(叶梅);  ZHANG ShuHua;  WANG YiFang
收藏  |  浏览/下载：27/0  |  提交时间：2015/12/21
Detector control system for Daya Bay Reactor Neutrino Experiment 期刊论文  OAI收割
SCIENCE CHINA-TECHNOLOGICAL SCIENCES, 2013, 卷号: 56, 期号: 8, 页码: 1966-1973
作者:  Zhang SH(张书华);  Wang YF(王贻芳);  Ye M(叶梅);  Zhang, SH;  Wang, YF
收藏  |  浏览/下载：33/0  |  提交时间：2016/04/08
Design and analysis of auto-focus assembly for spaceborne remote sensing camera (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:  Chen W.;  Gao X.
收藏  |  浏览/下载：29/0  |  提交时间：2013/03/25
Spaceborne remote sensing camera may be out of focus when the environment and photographic distance changes. In order to get higher ground sampled distance for the camera  based on the experience gained from the development of a remote sensing camera  working principle of auto-focus assembly control system was discussed. Time of waveform extraction was reduced. It sets force an auto-focus assembly that uses cam and line guide rail in order to move the lens group. The motion error of the auto-focus assembly was difficult to be eliminated and would affect on the focusing accuracy of the spaceborne remote sensing camera directly. So it was analyzed at both ends of the focusing structure. The CCD detector can keep stable when the remote sensing camera is imaging. The motion error was tested to verify the validity of the simulation result and it is less than 0.01mm. Its accuracy meets using demand. The focusing method of moving focal plane is suitable for spaceborne remote sensing camera. 2011 IEEE.  
The stability design and realization of airborne platform based on TMS320F2812 (EI CONFERENCE) 会议论文  OAI收割
2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011, August 19, 2011 - August 22, 2011, Jilin, China
作者:  Zhang X.;  Zhang X.;  Zhang X.
收藏  |  浏览/下载：40/0  |  提交时间：2013/03/25
Airborne electro-optical stable platform can isolate movement and vibration of the airframe  stabilizes the optic axis of the photoelectic detector  realize the observation and tracking for the object. It has comprehensive application value in army and cicil field. Most of present airborne platforms are analogic control system  digital control system can improve the system general performance  digital control is the development direction of platform systems. In view of the requirements of isolating disturbances and stabilizing optical axis of high-precision photoelectric guidance system  a three-axis stabilized platform system centering on the rate gyro was designed. The disturbance-isolation theory of the stabilized platform was analyzed and the control structure including multiple closed-loops was designed. At last a controller of the servo system based on TMS320F2812 DSP has been designed. Experiment results meet the technical index and precision requirement  and illustrate the practicability and effectiveness of the scheme. 2011 IEEE.  
Linearity measurement for image-intensified CCD (EI CONFERENCE) 会议论文  OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China
作者:  Zhang L.;  Zhao Y.;  Zhao Y.
收藏  |  浏览/下载：30/0  |  提交时间：2013/03/25
To the characteristic of the ultraviolet CCD (UV ICCD)  technique of the linearity measurement of the UV ICCD camera is studied based on the theory of radiometry. Approach of linearity measurement is discussed  and a kind of measurement system of the UV ICCD has been developed based on the method of neutral density filter. It is very important that the transmittance of the filter is independent of the wavelength in the method of neutral density filter. Black metal screen mesh with different transmittance is used in our system  and calibration of the filters' transmittance in different working positions has been done. Meanwhile  to assure the uniform of the received radiation on the target of the detector at any test points  an integrating sphere is placed behind the neutral filter to balance light. The whole measurement system mainly consists of a deuterium lamp with high stabilization  the attenuation film with transmission  integrating sphere  optical guide and electro-shift platform. Auto control is realized via special software during the test. With this instrument  the linearity of the UV ICCD was measured. Experimental results show that the nonlinearity of the UV ICCD under fixed-gain is less than 2% and the uncertainty of measurement system is less than 4%. 2010 Copyright SPIE - The International Society for Optical Engineering.  
Design and implementation of the detector control system for the BESIII drift chamber cosmic ray test 期刊论文  OAI收割
CHINESE PHYSICS C, 2008, 卷号: 32, 期号: 8, 页码: 649-652
作者:  Chen XH(陈锡辉);  Xie XX(谢小希);  Li XN(李小男);  Gao CS(高翠山);  Zhang YH(张银鸿)
收藏  |  浏览/下载：18/0  |  提交时间：2016/06/28
Design and implementation of the detector control system for the BESIIIdrift chamber cosmic ray test 期刊论文  OAI收割
中国物理C, 2008, 期号: 8, 页码: 649-652
作者:  Chen XH(陈锡辉);  Xie XX(谢小希);  Li XN(李小男);  Gao CS(高翠山);  Zhang YH(张银鸿)
收藏  |  浏览/下载：11/0  |  提交时间：2015/12/21
Design and implementation of the BESIII detector-control system 期刊论文  OAI收割
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2008, 卷号: 592, 期号: 3, 页码: 428-433
作者:  Chen XH(陈锡辉);  Xie XX(谢小希);  Gao CS(高翠山);  Zhang YH(张银鸿);  Min J(闵建)
收藏  |  浏览/下载：20/0  |  提交时间：2016/06/28
Optical and electrochemical detection techniques for cell-based microfluidic systems 期刊论文  OAI收割
ANALYTICAL AND BIOANALYTICAL CHEMISTRY, 2006, 卷号: 384, 期号: 6, 页码: 1259-1268
Yi, CQ; Zhang, Q; Li, CW; Yang, J; Zhao, JL; Yang, MS
收藏  |  浏览/下载：24/0  |  提交时间：2011/11/08
Developing of in-suit long trance profiler for testing slope error of aspherical optical Elements (EI CONFERENCE) 会议论文  OAI收割
ICO20: Optical Devices and Instruments, August 21, 2005 - August 26, 2005, Changchun, China
Zhou C.; Li H.; Chen C.; Zhou C.; Qian S.
收藏  |  浏览/下载：35/0  |  提交时间：2013/03/25
Profile error of super smooth surface of optical elements at X-ray/EUV in synchrotron radiation (SR) light beam line is described as slope error of them generally. The Long Trace Profiler (LPT) is used for testing surface slope error of SR optical elements in world generally. It is requisite to use In-suit LTP measuring surface thermal distortion of SR optical elements with high heat under high bright SR source. Authors design an In-suit LTP by means of co-path interferometer with pencil light beam. The instrument not only can be used for testing slope error of mirrors in Lab. also in situation test the distortion of mirror with high heat load at synchrotron light beam line. The device can be used to test various absolute surface figures of optical elements such as aspherieal  spherical and plane. It is needless standard reference surface. It is named by LTP-III. This paper describes its basic operating principle  optical system  mechanical constructions  DC serve motor control system  array detector  data acquisition system and computer system for controlling and data analysis of LTP-III. The Instrument has advantages of high accuracy  low cost  multifunction and wide application. Length of surface measured of optical element accuracy is 0.04 arcsec.