×
验证码:
换一张
忘记密码?
记住我
CORC
首页
科研机构
检索
知识图谱
申请加入
托管服务
登录
注册
在结果中检索
科研机构
长春光学精密机械与物... [6]
内容类型
会议论文 [6]
发表日期
2013 [1]
2011 [1]
2009 [1]
2008 [1]
2006 [1]
2005 [1]
更多...
×
知识图谱
CORC
开始提交
已提交作品
待认领作品
已认领作品
未提交全文
收藏管理
QQ客服
官方微博
反馈留言
浏览/检索结果:
共6条,第1-6条
帮助
限定条件
内容类型:会议论文
专题:长春光学精密机械与物理研究所
第一署名单位
第一作者单位
通讯作者单位
已选(
0
)
清除
条数/页:
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
排序方式:
请选择
作者升序
作者降序
题名升序
题名降序
发表日期升序
发表日期降序
提交时间升序
提交时间降序
High gain observer for drag tracking in mars entry longitudinal guidance (EI CONFERENCE)
会议论文
2012 International Conference on Measurement, Instrumentation and Automation, ICMIA 2012, September 15, 2012 - September 16, 2012, Guangzhou, China
Wu K.
;
Cui H.
;
Ma D.
;
Cui P.
收藏
  |  
浏览/下载:13/0
  |  
提交时间:2013/03/25
An extended high gain state and perturbation observer combined with feedback linearization was applied in drag tracking for Mars entry longitudinal guidance. The observer estimates the drag
the drag rate and the perturbation due to model uncertainty and disturbance for drag tracking. Mars entry simulation was performed to assess the performance of the adaptive guidance law. The results demonstrate that the proposed guidance law is robust to model error
and can recover the ideal performance of the feedback linearization control. Introduction In recent years
the concept of pinpoint landing has been proposed (2013) Trans Tech Publications
Switzerland.
Simulation and experiment of the static FTIR based on micro multi-step mirrors (EI CONFERENCE)
会议论文
International Symposium on Photoelectronic Detection and Imaging 2011: Sensor and Micromachined Optical Device Technologies, May 24, 2011 - May 26, 2011, Beijing, China
Liang J.
;
Liang Z.-Z.
;
Lv J.-G.
;
Fu J.-G.
;
Zheng Y.
;
Feng C.
;
Wang W.-B.
;
Zhu W.-B.
;
Yao J.-S.
;
Zhang J.
收藏
  |  
浏览/下载:26/0
  |  
提交时间:2013/03/25
In recent years
Fourier transform spectrometer (FTS) with small size and low mass is required in many applications with growing need for real-time and small platform spectral detection. In this paper
a micro Fourier transform infrared spectrometer (FTIR) based on spatial modulation mode was designed. This spectrometer has the advantages of high stability and simplified configuration. It also promises optical path differences (OPD) with high precision
as MOEMS technology is used in manufacturing the key components. The simulation and the experiments with regard to this FTIR configuration have been done. Firstly
the diffraction effect of the micro multi-step mirrors (MMSMs) is studied. We discuss the influence to the reversed spectrum by different mirror widths and different diffraction distances. Secondly
we simulate and analyze the influence of the source solid angle to the spectral resolution. Thirdly
we set up the theoretical model of the collimation error which is mainly from the defocus of the optical system and analyze the result caused by the collimation error. Fourthly
a new discrete Fourier transform arithmetic using least-squares cosines progression (LSCP) is proposed which can reconstruct the spectrum with nonuniform sampled signals. Finally
the MMSMs are fabricated used the MOEMS technology and the structural parameters are tested. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).
Intelligent traffic control system based on DSP and Nios II (EI CONFERENCE)
会议论文
2009 International Asia Conference on Informatics in Control, Automation, and Robotics, CAR 2009, February 1, 2009 - September 2, 2009, Bangkok, Thailand
Zhao H.
;
Zheng X.
;
Liu W.
收藏
  |  
浏览/下载:14/0
  |  
提交时间:2013/03/25
In view of domestic traffic
the traffic flow is increasing rapidly recent years
whereas the traffic control is deficient. This paper presents a design of intelligent traffic control system based on DSP and Nios II. Using Dual-CPU
Intelligent Traffic Control System combined with logic control in FPGA implements kinds of functions
which include crossphase adjustment
exchanging and establishing related information
live human-computer interaction and remote control etc. The system works mostly at the mode of timing and multiple phases according to the user demands dynamically
thus it breaks through the bottleneck of traditional traffic signal controller
and can accomplish the control in complicated and diversified traffic. This paper gives the realization of hardware system as well as the software system. The experiment results show that the Intelligent Traffic Control System can completely meet the requirements of modern traffic control. 2009 IEEE.
Characteristics of ZnMgO-based metal-semiconductor-metal photodetectors (EI CONFERENCE)
会议论文
International Symposium on Photoelectronic Detection and Imaging, ISPDI 2007: Photoelectronic Imaging and Detection, September 9, 2007 - September 12, 2007, Beijing, China
Liu K.
;
Shen D.
;
Zhang J.
;
Lu Y.
;
Jiang D.
;
Zhao Y.
;
Li B.
;
Zhao D.
;
Zhang Z.
;
Yao B.
收藏
  |  
浏览/下载:18/0
  |  
提交时间:2013/03/25
In recent years
ZnMgO semiconductor alloys
with a direct bandgap tunable between 3.37 eV and 7.8 eV
become one of the most suitable materials for the fabrication of ultraviolet detectors. In this paper
we have fabricated metal-semiconductor-metal photodetectors on 1-m thick Zn 0.8Mg0.2O films. The interdigital metal electrodes are 500 m long and 5 m wide with an interelectrode spacing 2 m
5 m and 10 m
respectively. Zn0.8Mg0.2O films were grown on quartz by ratio frequency magnetron sputtering at 500C. Dark current
spectral responsivity and pulse response were carried out for the devices with different finger pitches. All the photodetectors showed the peak responsivity at 330 nm and the ultraviolet-visible rejection ratio (R330 nm/R400 nm) is more than four orders of magnitude at 3 V bias. For the device with 2 m finger pitch
the detectivity was calculated as 4.21011 cm Hz 1/2/W at 330 nm. Furthermore
the transient response measurement for all devices revealed similar rise time of 10 ns. The 90%-10% fall times are 130 ns
170 ns and 230 ns for the devices with different finger pitches of 2 m
5 m and 10 m
respectively..
Study on the fabrication of orange micro-LED arrays for display (EI CONFERENCE)
会议论文
ICO20: Display Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China
Jin X.
;
Liang J.
;
Li J.
;
Zhao L.
;
Wang W.
收藏
  |  
浏览/下载:22/0
  |  
提交时间:2013/03/25
Arrays of micro-sized LEDs which can be used as microdisplays have been demonstrated in recent years. In order to reduce the input and output connections to the arrays
we employ a matrix addressable architecture
in which all the pixels in each row are connected by a common metal line on the top of the window layer (top electrode) or at the base of substrate(bottom electrode). Decreasing the size of electrodes makes for minimizing the size of device. The optic and electric isolation and good ohmic contact are also helpful to obtain superior optical and electrical performance. We describe a procedure of fabrication of AlGalnP-based orange micro-LED by wet etching. The structure of devices is etched using both isotropic and anisotropic etchant. The pixel size is about 16um 20um
and there are 1000 818 pixels in the light emitting chip whose diagonal is 1-in.
INS's error compensation on the base of the celestial theodolite (EI CONFERENCE)
会议论文
ICO20: Optical Devices and Instruments, August 21, 2005 - August 26, 2005, Changchun, China
Zhao H.-B.
;
Guo L.-H.
收藏
  |  
浏览/下载:61/0
  |  
提交时间:2013/03/25
In recent years there has been a major upsurge of interest in the integrated inertial navigation system (INS)/celestial navigation system (CNS) as a cost-effective way of providing accurate and reliable navigation aid for civil and military vehicles (ships
aircrafts
land vehicles and so on). One of the disadvantages of INS is its errors will grow unbounded. The CNS can be used to improve position estimation resulting from INS measurement. This paper describes the design of this. An error model developed earlier is used for CNS/INS filter (Kalman filter) mechanization. In CNS
celestial theodolite acquires an image of the sky
recognize the most brilliant stars in the image
creates with them a "constellation"
and searches for this pattern in an on board star catalogue of the observed region to get the precise position and attitude information of vehicles. The Kalman filter method is used to fuse measurement from the system. We can use this information to compensate INS's error. The tests carry out with this system show that system will get accurate navigation information.
©版权所有 ©2017 CSpace - Powered by
CSpace