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长春光学精密机械与物... [5]
力学研究所 [3]
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会议论文 [6]
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One-Step Patterned Contact-Resistance-Free Stretchable Strain Sensors With High Linearity and Repeatability for Body-Motion Detection
期刊论文
OAI收割
JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME, 2023, 卷号: 90, 期号: 7, 页码: 71004
作者:
Lan YQ(蓝昱群)
;
Liu GD(刘国栋)
;
Yin SZ(尹世珍)
;
Zhao Y(赵阳)
;
Liu C(刘崇)
  |  
收藏
  |  
浏览/下载:19/0
  |  
提交时间:2023/07/17
stretchable strain sensors
high linearity
high repeatability
laser cutting
elasticity
structures
Stretchable Strain Sensors Based on Deterministic-Contact-Resistance Braided Structures with High Performance and Capability of Continuous Production
期刊论文
OAI收割
ADVANCED FUNCTIONAL MATERIALS, 2022
作者:
Li JY(李居耀)
;
Li S(李爽)
;
Su YW(苏业旺)
  |  
收藏
  |  
浏览/下载:46/0
  |  
提交时间:2022/10/23
continuous mass production
deterministic-contact-resistance braided structures
high repeatability
high robustness
stretchable strain sensors
Contact-Resistance-Free Stretchable Strain Sensors with High Repeatability and Linearity
期刊论文
OAI收割
ACS NANO, 2021, 页码: 13
作者:
Li S(李爽)
  |  
收藏
  |  
浏览/下载:48/0
  |  
提交时间:2022/02/17
flexible electronics
stretchable strain sensors
high repeatability
high linearity
Tianwen-1
The application of digital signal processing (DSP) for the real time solving of artillery fire control exterior trajectory (EI CONFERENCE)
会议论文
OAI收割
2012 IEEE 3rd International Conference on Software Engineering and Service Science, ICSESS 2012, June 22, 2012 - June 24, 2012, Beijing, China
作者:
Li D.
收藏
  |  
浏览/下载:141/0
  |  
提交时间:2013/03/25
Method of gain firing data by calculate the group of differential equation has the advantages of high repeatability and high accuracy
But much of the CPU time is occupied by the task of re-iteration in computational processing. Therefore
it is not the real time processing. This paper introduces a method to quickly determine angle of firing by iteration method
which realizes Runge-Kutta method for the equations of exterior ballistic according to the model of mass center motion of projectile. Moreover
it also provides the flow of real-time integral solution and be proved by the simulation of MATLAB. Its accuracy satisfies the requirements. This work can be as reference for the design of opt-electrical fire control system and the demonstration work. 2012 IEEE.
Design and experimental research of a new type focus mechanism used in space-based telescope (EI CONFERENCE)
会议论文
OAI收割
2012 9th IEEE International Conference on Mechatronics and Automation, ICMA 2012, August 5, 2012 - August 8, 2012, Chengdu, China
作者:
Wang D.
收藏
  |  
浏览/下载:34/0
  |  
提交时间:2013/03/25
The position of focal plane will be changed because of temperature fluctuation and vacuum environment. In order to make the telescope work well
positioning accuracy of the mechanism is 0.008mm. The performance satisfies the need of precision
a focusing mechanism is needed. To majority of large space-based telescopes
and the scheme design is reasonable and practicable. 2012 IEEE.
the general way to do this would be to use a reflector
which was located in the backfocal distance. One of typical schemes of this mechanism was introduced
however
because of the big axial size
the mechanism can't be used when the size of the enclosure was limited. A new type of focusing mechanism was introduced
which has such advantages of small size
high accuracy and low mass. The design and test methods had been discussed. According to the results
the repeatability positioning accuracy is 0.0025mm
Design of motion adjusting system for space camera based on ultrasonic motor (EI CONFERENCE)
会议论文
OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China
作者:
Sun Z.
收藏
  |  
浏览/下载:84/0
  |  
提交时间:2013/03/25
Drift angle is a transverse intersection angle of vector of image motion of the space camera. Adjusting the angle could reduce the influence on image quality. Ultrasonic motor (USM) is a new type of actuator using ultrasonic wave stimulated by piezoelectric ceramics. They have many advantages in comparison with conventional electromagnetic motors. In this paper
some improvement was designed for control system of drift adjusting mechanism. Based on ultrasonic motor T-60 was designed the drift adjusting system
which is composed of the drift adjusting mechanical frame
the ultrasonic motor
the driver of Ultrasonic Motor
the photoelectric encoder and the drift adjusting controller. The TMS320F28335 DSP was adopted as the calculation and control processor
photoelectric encoder was used as sensor of position closed loop system and the voltage driving circuit designed as generator of ultrasonic wave. It was built the mathematic model of drive circuit of the ultrasonic motor T-60 using matlab modules. In order to verify the validity of the drift adjusting system
was introduced the source of the disturbance
and made simulation analysis. It designed the control systems of motor drive for drift adjusting system with the improved PID control. The drift angle adjusting system has such advantages as the small space
simple configuration
high position control precision
fine repeatability
self locking property and low powers. It showed that the system could accomplish the mission of drift angle adjusting excellent. 2011 SPIE.
Digital implementation of a galvanometric optical scanner based on DSP and FPGA
会议论文
OAI收割
2011 international conference on mechatronic science, electric engineering and computer, mec 2011, jilin, china, august 19, 2011 - august 22, 2012
FengJing
;
ZhiJiang
收藏
  |  
浏览/下载:27/0
  |  
提交时间:2012/07/09
galvanometer
high speed
high accuracy
repeatability
DSP
FPGA
USB??PID
compensation
Alignment of off-axis asphere and compensator with four poles (EI CONFERENCE)
会议论文
OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 19, 2008 - November 21, 2008, Chengdu, China
作者:
Li J.
;
Chen Y.
;
Li J.
;
Li J.
;
Wang P.
收藏
  |  
浏览/下载:58/0
  |  
提交时间:2013/03/25
Aspheres are utilized widely thanks to the development of optical design
manufacture and testing. Compensators are usually necessary when aspheres are under test. The alignment of aspheres and their compensators is a risk because it's tough to check whether the compensators work in right way. A new method of alignment with four poles is put forward in this paper. Optical interval error can be tight while it is quite important due to direct influence on central curvature
conic constant and high order coefficients of aspherical surface. A modified on-axis Foucault apparatus is set up since it makes the optical axis visible and helps to control the error of off-axis amount. Some small holes are drilled in the metallic cell of the compensator so that the ends of poles can be stably relied on in order to increase operational repeatability. The method has been carried out practically and it matches the measurement result given by a set of theodolites. 2009 SPIE.
Micro-motion exposure method based on PZT piezoelectric ceramics (EI CONFERENCE)
会议论文
OAI收割
International Symposium on Photoelectronic Detection and Imaging 2009: Material and Device Technology for Sensors, June 17, 2009 - June 19, 2009, Beijing, China
作者:
Meng Z.
;
Meng Z.
收藏
  |  
浏览/下载:100/0
  |  
提交时间:2013/03/25
There mainly is laser digital photofinishing technique and digital photofinishing technique based on LCD consisting of TFT and LCOS in the digital photofinishing field at the present time. The former have a good many merit such as wide color gamut
high processing rate
large output size and high brightness
but his cost is very high
his maintain technique being comparatively complex
that result in difficult use for people. The utilization ratio of the latter is low because of lower resolution and lower aperture ratio for LCD
but the digital photofinishing based on LCD have lower cost and higher utilization ration
being suitable for people's current standard of living. Considering above mentioned problem
a micro-motion exposure method based on PZT piezoelectric ceramics used in digital image photofinishing is presented. The two-dimension micro-motion exposure system consisting of PZT piezoelectric ceramics
LCD panel
polarizing film and spring strip is designed. By means of PZT piezoelectric ceramics the LCD panel is removed about the one half of the pixel size of the LCD panel for four times from the original place
at the same time imaging system is exposed four times at the printing paper. The software is used to control the time synchronization
the exposure time and motion range of the LCD panel. The system has advantages such as shorter response time than 0.1seconds
lesser motion error than 0.01 microns
high stability and repeatability. Experimental results show that the proposed micro-motion exposure method improve the picture brightness and enlarge output size
at the meantime reducing the cost of the system. 2009 SPIE.