×
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... [11]
内容类型
会议论文 [11]
发表日期
2012 [2]
2011 [4]
2010 [3]
2008 [1]
2006 [1]
×
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11条,第1-10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
Reliable attitude stability control of quad-rotor based on fault-tolerant approach (EI CONFERENCE)
会议论文
2012 9th IEEE International Conference on Mechatronics and Automation, ICMA 2012, August 5, 2012 - August 8, 2012, Chengdu, China
Gong X.
;
Peng C.
;
Tian Y.
;
Bai Y.
;
Zhao C.
;
Gao Q.
;
Xu Z.
收藏
  |  
浏览/下载:30/0
  |  
提交时间:2013/03/25
The reliability flight property has received much attention within the aircraft control community throughout the last decades. In this paper
the fault-tolerant control technique is introduced into the attitude stability control system of a quadrotor UAV in order to compensate the influence of the actuators fault of the aircraft. This control scheme is composed of two components: a robust fault detection module using the modelbased observation approach and a reconfigurable controller. Besides the designing procedure
the theoretical analysis of robustness and stability of the designed FTC scheme are also contained in this article. And finally
the availability of the proposed scheme is verified through numerical simulation. 2012 IEEE.
Design of controlling system in multi-function durability testing device for vehicle vacuum booster with brake master cylinder (EI CONFERENCE)
会议论文
2012 International Conference on Mechanical and Electronic Engineering, ICMEE 2012, June 23, 2012 - June 24, 2012, Hefei, China
Hao X.
;
Zhang R.
;
Li X.
;
Wang M.
收藏
  |  
浏览/下载:30/0
  |  
提交时间:2013/03/25
The quality of vehicle vacuum booster with brake master cylinder is related to the safe of drivers and automobiles. The testing experiment must be executed strictly before leaving factory based on the national standards.The paper introduces the controlling system of multi-function durability testing device
which is designed for doing durable testing experiments and Anti-lock braking system (ABS) performance experiments. The structure and theory of device is presented. The controlling system is illuminated in detail. To test the dynamic property
this system was identified by a recursive BP neural network. According to the character of a great deal of sensors and actuators
the high precision
capabilities and reliability
the distributed control mode (DCS) including the computer and PLC by RS-485 bus is utilized. The four channels testing experiments are achieved at the same time. The test data is directly memorized into the computer. The results of general endurance and ABS endurance testing experiments are shown to demonstrate the excellent performance of the testing device. 2012 Springer-Verlag Berlin Heidelberg.
The investigation of point defect modes of phononic crystal for high Q resonance (EI CONFERENCE)
会议论文
2011 16th International Solid-State Sensors, Actuators and Microsystems Conference, TRANSDUCERS'11, June 5, 2011 - June 9, 2011, Beijing, China
Li F.
;
Liu J.
;
Wu Y. H.
收藏
  |  
浏览/下载:14/0
  |  
提交时间:2013/03/25
Point defect cavity was constructed in a two-dimensional phononic crystal plate. It was excited by a small piezo chip in the cavity and the vibration of each point defect modes were detected by an optical interferometer. Point defect modes on 2D PC plate in vacuum
air and loaded with water were investigated theoretically and experimentally to make clear of Q factors
which are affected by inner attenuation
band gap effects and medium. The way to get high Q resonance has been found. It helps to design a new kind of resonator or sensor. 2011 IEEE.
Multi-parameters decoupling method with Lamb wave sensor for improving the selectivity of label-free liquid detection (EI CONFERENCE)
会议论文
2011 16th International Solid-State Sensors, Actuators and Microsystems Conference, TRANSDUCERS'11, June 5, 2011 - June 9, 2011, Beijing, China
Zhou L.
;
Xuan M.
;
Wu Y.
;
Manceau J.-F.
;
Bastien F.
收藏
  |  
浏览/下载:22/0
  |  
提交时间:2013/03/25
The anti-symmetric modes (A01 mode for low frequency
A 03 mode for high frequency) and symmetric modes (S0 mode) produced by Lamb wave sensor are used to detect multi-parameters of a liquid
such as its density
sound velocity and viscosity. These modes are found to be very different to the parameters. For example
the A01 mode is very sensitive to the liquid's density but the A03 mode is sensitive to its sound velocity. The measurements of the attenuation with S0 mode can give out liquid's viscosity after its density been determined by A 01 mode. That could be a way to distinguish an unknown liquid with high sensitivity or to solve the problem of the selectivity of label free detection on biosensors. 2011 IEEE.
Design of motion compensation mechanism of satellite remote sensing camera (EI CONFERENCE)
会议论文
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Gu S.
;
Yan Y.
;
Xu K.
;
Jin G.
收藏
  |  
浏览/下载:37/0
  |  
提交时间:2013/03/25
With the development of aerospace remote sensing technology
the ground resolution of remote sensing camera enhances continuously. Since there is relative motion between camera and ground target when taking pictures
the target image recorded in recording media is moved and blurred. In order to enhance the imaging quality and resolution of the camera
the image motion had to be compensated. In order to abate the effect of image motion to image quality of space camera and improve the resolution of the camera
the compensation method of image motion to space camera is researched. First
the reason of producing drift angle and adjustment principle are analyzed in this paper. This paper introduce the composition and transmission principle of image motion compensation mechanism. Second
the system adopts 80C31 as controller of drift angle
and adopts stepping motor for actuators
and adopts absolute photoelectric encoder as the drift Angle measuring element. Then the control mathematical model of the image motion compensation mechanism are deduced
and it achieve the closed-loop control of the drift angle position. At the last
this paper analyses the transmission precision of the mechanism. Through the experiment
we measured the actual precision of the image motion compensation mechanism
and compared with the theoretical analysis. There are two major contributions in this paper. First
the traditional image motion compensation mechanism is big volume and quality heavy. This has not fit for the development trend of space camera miniaturization and lightweight. But if reduce the volume and quality of mechanism
it will bring adverse effects for the precision and stiffness of mechanism. For this problem
This paper designed a image motion compensation that have some advantages such as small size
light weight at the same time
high precision
stiffness and so on. This image motion compensation can be applicable to the small optics cameras with high resolution. Second
the traditional mechanism control need to corrected
fitting and iterative for the control formula of mechanism. Only in this way
we can get the optimal control mathematical model. This paper has high precision of the control formula derived. It can achieve the high precision control without fitting
It also simplify the difficulty of control mathematical model establishment. This paper designed the range of adjusting of image motion compensation mechanism between -5 +5. Based on choosing-5
-4
-3
-2
-1
0
+1
+2
+3
+4
+4 as the expectation value of the imaginary drift angle
we get ten groups of the fact data in adjusting drift angle measured. The test results show that the precision of the drift angle control system can be achieved in 1. It can meet the system requirements that the precision of the control system is less than 3'
and it can achieve the high-precision image motion compensation. 2011 SPIE.
Dynamic optimization of valveless micropump (EI CONFERENCE)
会议论文
2011 16th International Solid-State Sensors, Actuators and Microsystems Conference, TRANSDUCERS'11, June 5, 2011 - June 9, 2011, Beijing, China
Deng Y. B.
;
Wu Y. H.
;
Xuan M.
;
Korvink J. G.
;
Liu Z. Y.
收藏
  |  
浏览/下载:15/0
  |  
提交时间:2013/03/25
For the first time
this paper reports on an effective topology optimization method to improve the output net flux for valveless micropumps. The micropump considered here is actuated by the vibration of membranes and can generate a net flow along the optimized rigid fluidic channel. The detailed layout of the micropump channel is optimized with respect to a number of factors which influence the output net flux of liquid
such as the number of actuation elements
the positions of actuation elements
the driving phase differences and the driving frequency. Accordingly
the layouts of several novel valveless micropumps are presented. 2011 IEEE.
A 3-axis simulator for spacecraft attitude control research (EI CONFERENCE)
会议论文
2010 IEEE International Conference on Information and Automation, ICIA 2010, June 20, 2010 - June 23, 2010, Harbin, Heilongjiang, China
Dai L.
;
Jin G.
收藏
  |  
浏览/下载:17/0
  |  
提交时间:2013/03/25
This article presents the details of a new 3-axis simulator for spacecraft attitude control research and simulation. The air bearing allows the test bed to rotate about three axes with tiny friction. The attitude determination system consists of three fibre optical gyros
an inclinometer and a magnetometer. The actuator of the system consists of three reaction flywheels and four control moment gyros (CMG). Mathematical models of the sensors and actuators are given to help algorithm design. An extended Kalman filter was designed to provide attitude information for controller. Mathematical simulation results prove the attitude determination system can achieve high precision. A coulomb friction model of reaction wheels is given with experimental results. A friction compensation algorithm was developed to raise the pointing accuracy of the control system. The article also describes the details of the hardware structure. A PD stabilizing controller is implemented to test the validation of the whole control system at last. 2010 IEEE.
Research of active supporting technology based on 400mm thin mirror (EI CONFERENCE)
会议论文
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, April 26, 2010 - April 29, 2010, Dalian, China
Li H.-Z.
;
Liu X.-Y.
;
Wang J.-L.
收藏
  |  
浏览/下载:19/0
  |  
提交时间:2013/03/25
Using a spherical mirror of 400mm diameter and 12mm thickness
active supporting technology of thin mirror is researched. The axial support of the mirror is composed of 12 active supports and 3 fixed supports. The force actuator
which is composed of displacement actuator and force sensor
is installed in the active support. The mirror surface is tested by Zygo interferometer. For calibration
each actuator exerts unit force alone
and the surface variation is tested and taken as the response function of the actuator. The response functions of all actuators compose the stiffness matrix. Then the stiffness matrix is used by damped least square method to determine the correction force of each active support. In order to analyze the correction capability of the active supports
14 Zernike modes of the mirror surface are generated and tested respectively
and 7 modes are selected for correction. Initially
the RMS error of mirror surface is 1.16 I( =0.6328nm)when all actuators exert the same force. After 5 iterations
the RMS error of mirror surface is reduced to 0.13
close to the original surface quality. 2010 Copyright SPIE - The International Society for Optical Engineering.
Design and analysis of power system of micro-electromechanical actuator (EI CONFERENCE)
会议论文
2010 2nd International Conference on Industrial Mechatronics and Automation, ICIMA 2010, May 30, 2010 - May 31, 2010, Wuhan, China
Han X.
;
Liu B.
;
Zhang J.
;
Jia H.
;
Ge W.
收藏
  |  
浏览/下载:15/0
  |  
提交时间:2013/03/25
In order to apply the electromechanical actuator to tactical mini-missiles
maximum rotational speed of output shafts is greater than 250/s. Test results basically correspond to the requirement of technical indexes. It is proved that this analysis and design method is congruent with the design of micro-electromechanical actuators
this paper researches on the key technology such as load-bearing ability
the system bandwidth can reach 25.3Hz on the condition of no load and 23.4Hz on the condition of load
thus the method is feasible. 2010 IEEE.
rapidity and miniaturization of the micro-electromechanical actuator power system based on the ball screw. First
according to specific technical indexes
the power
electromechanical time constant and the size of the motors are screened originally through theoretical analysis. Finally
based on the characteristics of ball screw transmission
load locus of the micro-electromechanical actuator dynamic system is theoretically analyzed and the optimum speed ratio is determined through parameter optimization. The results of the double closed loop controlled test on the principle prototype show: the system can operate normally with 2.5N.m hinge moment
Proposal and investigation for a planar MOEMS 18 wavelength-selective switch (EI CONFERENCE)
会议论文
MEMS/MOEMS Technologies and Applications III, November 12, 2007 - November 14, 2007, Beijing, China
Li X.
;
Liang J.
;
Sun D.
;
Zhong Y.
;
Li W.
;
Liang Z.
收藏
  |  
浏览/下载:92/0
  |  
提交时间:2013/03/25
This paper presents a new wavelength-selective switch by combining silicon micromaching and microassembly techniques. The 18 wavelength-selective switch (WSS) based on micro electro mechanical systems (MEMS) technology is proposed and fabricated with micro electromagnetic actuators
8 WXC prototype node is implemented by using 18 WSSs as building elements. The working principle and the configuration of the micro electromagnetic actuator are illuminated. By analysis
reflecting prisms and narrow-band thin films filters. And a 8
the property suits for the application when the inputs are 2V
and the best fiber-to-fiber insertion loss 5dB is gotten.
©版权所有 ©2017 CSpace - Powered by
CSpace