中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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Practical method for the definition of chromatographic peak parameters in preparative liquid chromatography 期刊论文  OAI收割
JOURNAL OF SEPARATION SCIENCE, 2016, 卷号: 39, 期号: 20, 页码: 3917-3926
作者:  
Shen, Aijin;  Jin, Gaowa;  Guo, Zhimou;  Xiao, Yuansheng;  Yan, Jingyu
收藏  |  浏览/下载:52/0  |  提交时间:2017/10/29
Mythen detector for X-ray diffraction at the Beijing synchrotron radiation facility 期刊论文  OAI收割
INSTRUMENTATION SCIENCE AND TECHNOLOGY, 2015, 卷号: 44, 期号: 1, 页码: 1-11
作者:  
Du R(杜蓉);  Cai Q(蔡泉);  Chen ZJ(陈中军);  Gong Y(宫宇);  Wu ZH(吴忠华)
收藏  |  浏览/下载:44/0  |  提交时间:2016/04/18
Structure buckling load interval analysis of supercavitating projectile (EI CONFERENCE) 会议论文  OAI收割
2011 9th International Conference on Reliability, Maintainability and Safety: Safety First, Reliability Primary, ICRMS'2011, June 12, 2011 - June 15, 2011, Guiyang, China
作者:  
Zhou L.
收藏  |  浏览/下载:48/0  |  提交时间:2013/03/25
As a result of supercavitating projectiles with high underwater velocity  their structures undergo high longitudinal force. It is necessary to perform structure buckling load interval analysis because the uncertainty of structural own parameters should be considered. Critical buckling load of supercavitating projectiles is calculated by Galerkin method. The partial matrixes of critical buckling load implicit function to each uncertainty variable are deduced  and the interval of structure critical buckling load is calculated by interval analysis and convex model methods. Numerical results show that the nominal value  lower and upper bounds of critical buckling load increase with the increment of the ratio of base diameter to cavitator diameter. And the uncertainty degree of basic variables should be controlled as far as possible in the project for high reliability. 2011 IEEE.  
The aircraft autopilot design of parameters changing in a wide range (EI CONFERENCE) 会议论文  OAI收割
2011 International Conference on Electric Information and Control Engineering, ICEICE 2011, April 15, 2011 - April 17, 2011, Wuhan, China
Zhen D.; Yue Z.
收藏  |  浏览/下载:43/0  |  提交时间:2013/03/25
Autopilot is an important part of aircraft  Under the action of the disturbance torque  for the flight parameters of aircraft Changing in a wide range  the range was about 16km  on the basic of analyzing the typical trajectory  the max height was about 5100m  the trajectory of feature points were selected  the deviation of lateral was about 12m  taking pitch control loop for example  the maximum angle of attack was about 3.6  a sub- PID autopilot was designed using classical control theory  the maximum elevator deflection was less than 5  using single-mode Transient suppression method  the maximum aileron deflection was less than 2  the overload due to control surface transition deflection was avoided when control parameters changing  the maximum roll was less than 5  the verification was done by non-linear simulation. The result showed that: the phase margin of autopilot was greater than 30  the response of overload can accurately track the given overload instruction. An autopilot design method of aircraft of parameter changes in a wide range was provided. 2011 IEEE.  the bandwidth was more than 14rad / s  the settling time was less than 0.7s  the maximum overshoot was 23.3%  
Control method research on wide flight envelope aerocraft (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
作者:  
Duan Z.
收藏  |  浏览/下载:52/0  |  提交时间:2013/03/25
The flying qualities of aerocraft was directly effected by the autopilot  for the wide flight envelope aerocraft  on the basic of analyzing the typical trajectory  the three loop autopilots of roll stability  pitch and yaw were designed  using single-mode Transient suppression method  the overload due to control surface transition deflection was avoided when control parameters changing  the verification was done by non-linear simulation. The result showed that: Under the action of the disturbance torque  the maximum roll was less than 5  the range of the aerocraft was from 13.5km to 22.4km  the max height was about 5100m  the max deviation of lateral was about 42m  the maximum elevator deflection was less than 6.5 the control law was applicable within the effective range. An autopilot design method of wide flight envelope aerocraft was provided. 2011 IEEE.  
电子束蒸发镀膜速率控制 期刊论文  OAI收割
中国激光, 2008, 卷号: 35, 期号: 10, 页码: 1591, 1594
王善成; 方明; 易葵; 邵淑英; 范正修
收藏  |  浏览/下载:1605/209  |  提交时间:2009/09/22
The basic parameters of static pointing model of telescope 期刊论文  OAI收割
CHINESE ASTRONOMY AND ASTROPHYSICS, 2001, 卷号: 25, 期号: 4, 页码: 499-505
作者:  
Zhang, XX;  Wu, LD
收藏  |  浏览/下载:37/0  |  提交时间:2013/01/31
SOLUTIONS OF YANG-BAXTER EQUATION WITH COLOR PARAMETERS 期刊论文  OAI收割
SCIENCE IN CHINA SERIES A-MATHEMATICS PHYSICS ASTRONOMY & TECHNOLOGICAL SCIENCES, 1995, 卷号: 38, 期号: 9, 页码: 1105-1116
作者:  
SUN, XD;  WANG, SK
  |  收藏  |  浏览/下载:36/0  |  提交时间:2018/07/30