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浏览/检索结果: 共9条,第1-9条 帮助

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Design and Simulation Analysis of Piezoelectric Ceramic Tube-Based Fiber Optic Nutator Applied to an Intersatellite Laser Communication System 期刊论文  OAI收割
PHOTONICS, 2023, 卷号: 10, 期号: 7
作者:  
Peng, Bo;  Ruan, Ping;  Han, Junfeng;  Li, Xiangyu;  Chang, Zhiyuan
  |  收藏  |  浏览/下载:29/0  |  提交时间:2023/08/18
Dynamic linear modeling, identification and precise control of a walking piezo-actuated stage 期刊论文  OAI收割
Mechanical Systems and Signal Processing, 2019, 卷号: 128, 页码: 141-152
作者:  
P.Z.Li;  X.D.Wang;  L.Zhao;  D.F.Zhang;  K.Guo
  |  收藏  |  浏览/下载:31/0  |  提交时间:2020/08/24
Analysis of DoD inkjet printhead performance for printable electronics fabrication using dynamic lumped element modeling and swarm intelligence based optimal prediction 期刊论文  OAI收割
Journal of Central South University, 2015, 卷号: 22, 期号: 10, 页码: 3925-3934
作者:  
He MW(何茂伟);  Sun LL(孙丽玲);  Hu KY(胡琨元);  Zhu YL(朱云龙);  Chen HN(陈瀚宁)
收藏  |  浏览/下载:28/0  |  提交时间:2015/11/02
Artificial Bee Colony Algorithm Based on K-Means Clustering for Droplet Property Optimization 会议论文  OAI收割
8th International Conference on Intelligent Robotics and Applications (ICIRA 2015), Portsmouth, UK, August 24-27, 2015
作者:  
Sun LL(孙丽玲);  Hu JT(胡静涛);  He MW(何茂伟);  Chen HN(陈瀚宁)
收藏  |  浏览/下载:28/0  |  提交时间:2015/12/19
Structural, electronic, and polarization properties of Bi2ZnTiO6 supercell from first-principles 期刊论文  OAI收割
JOURNAL OF APPLIED PHYSICS, 2012, 卷号: 111, 期号: 11
Dai, JQ; Fang, Z
收藏  |  浏览/下载:13/0  |  提交时间:2013/09/24
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:85/0  |  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.  
Preparation and Characterization of New Pb(Yb1/2Nb1/2)O-3-Pb(Mg1/3Nb2/3)O-3-PbTiO3 Ternary Piezo-/Ferroelectric Crystals 期刊论文  OAI收割
Chemistry of Materials, 2010, 卷号: 22, 期号: 19, 页码: 5588-5592
C. He, X. Z. Li, Z. J. Wang, X. F. Long, S. Y. Mao and Z. G. Ye
收藏  |  浏览/下载:65/0  |  提交时间:2012/11/02
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:103/0  |  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.  
Research and development on the valve-less piezoelectric pump with unsymmetrical corrugation chamber bottom (EI CONFERENCE) 会议论文  OAI收割
2006 IEEE International Conference on Information Acquisition, ICIA 2006, August 20, 2006 - August 23, 2006, Weihai, Shandong, China
作者:  
Zhang J.
收藏  |  浏览/下载:18/0  |  提交时间:2013/03/25
The valve-less piezoelectric pump is more suitable for minimization and microminiaturization than the valve piezoelectric pump  especially for the Microelectromechanical System (MEMS) because of its simple structure. However  in order to control the flow direction of the fluid through the pump  some assembles have to be attached outside the chamber. And it is no doubt that these assembles will take some space and hinder its further microminiaturization. In this paper  a novel valve-less piezoelectric pump with unsymmetrical corrugation chamber bottom (UCCB) is presented. It ingeniously takes advantage of the space of the chamber by developing its bottom into a unsymmetrical corrugation shape along the axis of the inlet and outlet. As a result  a series of diffuse pipes and nozzle pipes (or wedge-shaped pipes)  which substitute the regular diffuse/nozzle elements fitted outside the chamber  are alternatively formed between the unsymmetrical corrugation chamber bottom (UCCB) and the piezoelectric vibrator. The piezoelectric vibrator is opposite to the UCCB. And these diffuse pipes and nozzle pipes are able to force the fluid in the chamber to flow along a single direction when the pump works. And then the mathematic model is established to present the relationship between the mean energy loss and the flow rate of the pump. Basing on the mathematic model  the theory on the pump working is analysed. Finally  a real UCCB valve-less piezoelectric pump is manufactured  and the test with it is carried out to verify the theory above-mentioned. 2006 IEEE.