中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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Reversible and irreversible loss in performance in direct methanol fuel cells during freeze/thaw cycles 期刊论文  OAI收割
journal of power sources, 2012, 卷号: 219, 页码: 193-198
作者:  
Yang, Linlin;  Sun, Hai;  Wang, Suli;  Jiang, Luhua;  Sun, Gongquan
收藏  |  浏览/下载:29/0  |  提交时间:2015/11/12
The ship-borne infrared searching and tracking system based on the inertial platform (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, May 24, 2011 - May 24, 2011, Beijing, China
作者:  
Li Y.;  Zhang H.;  Zhang H.;  Li Y.;  Li Y.
收藏  |  浏览/下载:42/0  |  提交时间:2013/03/25
As a result of the radar system got interferenced or in the state of half silent  it can cause the guided precision drop badly In the modern electronic warfare  therefore it can lead to the equipment depended on electronic guidance cannot strike the incoming goals exactly. It will need to rely on optoelectronic devices to make up for its shortcomings  but when interference is in the process of radar leading  especially the electro-optical equipment is influenced by the roll  pitch and yaw rotation  it can affect the target appear outside of the field of optoelectronic devices for a long time  so the infrared optoelectronic equipment can not exert the superiority  and also it cannot get across weapon-control system "reverse bring" missile against incoming goals. So the conventional ship-borne infrared system unable to track the target of incoming quickly  the ability of optoelectronic rivalry declines heavily.Here we provide a brand new controlling algorithm for the semi-automatic searching and infrared tracking based on inertial navigation platform. Now it is applying well in our XX infrared optoelectronic searching and tracking system. The algorithm is mainly divided into two steps: The artificial mode turns into auto-searching when the deviation of guide exceeds the current scene under the course of leading for radar.When the threshold value of the image picked-up is satisfied by the contrast of the target in the searching scene  the speed computed by using the CA model Least Square Method feeds back to the speed loop. And then combine the infrared information to accomplish the closed-loop control of the infrared optoelectronic system tracking. The algorithm is verified via experiment. Target capturing distance is 22.3 kilometers on the great lead deviation by using the algorithm. But without using the algorithm the capturing distance declines 12 kilometers. The algorithm advances the ability of infrared optoelectronic rivalry and declines the target capturing time by using semi-automatic searching and reliable capturing-tracking  when the lead deviation of the radar is great. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).  
Design of an improved data signal timing for an amorphous silicon active-matrix organic LED display (EI CONFERENCE) 会议论文  OAI收割
ICO20: Display Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Zhang Z.-W.
收藏  |  浏览/下载:23/0  |  提交时间:2013/03/25
The most critical issue in the design of an active matrix organic light emitting diode (AM-OLED) display pixel is the pixel to the pixel luminance uniformity. By substituting four-thin film transistor (TFT) pixel circuit for two-TFT pixel circuit  the luminous uniformity has great improved  but it requires more components than the two-TFT pixel circuit. There are some barriers needed to resolve to utilize hydrogenated amorphous silicon transistor to lit OLED  such as low field effect mobility  low output current and threshold voltage shift. In this article  a two-a-Si:H TFT pixel circuit was designed  which consisted of one named switching TFT and the other named driving TFT. The driving TFT gate line structure modified and a data signal timing improved were reported. The modified driving TFT can provide enough current about 30 microampere to lit OLED and the novel data signal timing can provide a constant current to OLED by restraining the driving TFT threshold voltage variation. In the novel data signal timing  the control signals to the driving TFT gate include a data signal and a reverse data signal. The signals alteration is performed either at a frame rate or at a line rate. By experiments  the driving TFT output current value is plotted as a function of the time in different reversed voltage value. When the magnitude of the positive data signal and the negative data signal is equal  the variety of Vth  is smallest  about 1.28V after a fixed stressing time of 1.33104min  which shows the novel data signal timing can improved the driving TFT output-input current stability.  
Study on the reverse characteristics of Ti/6H-SiC Schottky contacts 期刊论文  OAI收割
acta physica sinica, 2003, 卷号: 52, 期号: 1, 页码: 211-216
Shang YC; Liu ZL; Wang SR
收藏  |  浏览/下载:63/0  |  提交时间:2010/08/12
Study on the reverse characteristics of ti/6h-sic schottky contacts 期刊论文  iSwitch采集
Acta physica sinica, 2003, 卷号: 52, 期号: 1, 页码: 211-216
作者:  
Shang, YC;  Liu, ZL;  Wang, SR
收藏  |  浏览/下载:24/0  |  提交时间:2019/05/12
Influence of crystal perfection on the reverse leakage current of the sige si p-n heterojunction diodes 期刊论文  iSwitch采集
Journal of crystal growth, 1999, 卷号: 201, 页码: 551-555
作者:  
Liu, XF;  Liu, JP;  Li, JP;  Wang, YT;  Li, LY
收藏  |  浏览/下载:13/0  |  提交时间:2019/05/12
Influence of crystal perfection on the reverse leakage current of the SiGe Si p-n heterojunction diodes 期刊论文  OAI收割
journal of crystal growth, 1999, 卷号: 201, 期号: 0, 页码: 551-555
作者:  
Liu XF
收藏  |  浏览/下载:35/0  |  提交时间:2010/08/12