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CAS IR Grid
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长春光学精密机械与物... [4]
近代物理研究所 [1]
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OAI收割 [5]
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会议论文 [4]
期刊论文 [1]
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2017 [1]
2011 [2]
2010 [1]
2005 [1]
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New understanding of nano-scale interstitial dislocation loops in BCC iron
期刊论文
OAI收割
JOURNAL OF PHYSICS-CONDENSED MATTER, 2017, 卷号: 29, 页码: 7
作者:
Gao, N.
;
Chen, J.
;
Kurtz, R. J.
;
Wang, Z. G.
;
Zhang, R. F.
  |  
收藏
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浏览/下载:37/0
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提交时间:2018/05/31
dislocation loop
non-conservation of Burgers vector law
molecular dynamics
rotation of loop
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:36/0
  |  
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).
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.
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浏览/下载:20/0
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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.
High precision test method for dynamic imaging of space camera (EI CONFERENCE)
会议论文
OAI收割
2010 IEEE International Conference on Advanced Computer Control, ICACC 2010, March 27, 2010 - March 29, 2010, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
作者:
Jin L.-X.
;
Zhang K.
;
Zhang K.
;
Zhang K.
;
Zhang K.
收藏
  |  
浏览/下载:26/0
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提交时间:2013/03/25
A test method for dynamic imaging of space TDICCD (Time Delay and Integration Charge Coupled Devices) camera was presented in this paper. The test method adopted the PLL (Phase Locked Loop) technology and CMAC (Cerebella Model Articulation Controller) friction compensation as control strategy. Furthermore
According to this method
a test system for dynamic imaging of space TDICCD camera was designed and implemented. The system simulated the movement of the ground objects relative to the space aerocraft
to validate the capability of image speed match and the dynamic imaging quality of TDICCD camera. The design adopted a precision turntable and a drift turntable to simulate the movement around the earth and the drift motion in different latitude due to the rotation of earth
of the aerocraft. The turntables were drived by permanent magnet torque motor which was powered by PWM (Pulse Width Modulation). The system adopted DSP (Digital Signal Processor) as the control core and reached a very high performance. The experimental results showed that the steady speed error was better than 0.01 % and the instantaneous speed error reached 0.0267%. The precision of the test system designed met the requirement for dynamic imaging of TDICCD camera. 2010 IEEE.
Position following control system for the dome based on TMS320F2812 (EI CONFERENCE)
会议论文
OAI收割
ICMIT 2005: Control Systems and Robotics, September 20, 2005 - September 23, 2005, Chongging, China
作者:
Zhao J.
收藏
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浏览/下载:16/0
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提交时间:2013/03/25
A position following control system was discussed to synchronize the rotational position of the dome with that of the theodolite. There were two loops in the servo control system. Open loop control was for speed adjustment
while closed loop control was for position following control. The core controller of the servo control system adopted TMS320F2812 DSP (Digital Signal Processing) chip and an absolute type encoder was used as a position feedback unit. A converter DA8562 converted the digital angular position calculated in DSP to an analogy voltage to control the dome rotation through a series of devices such as frequency conversion actiyator
servomotor and gear case. The experimental results show that the system synchronous following error less than 2 at 0.1/s to 35/s.