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浏览/检索结果: 共23条，第1-10条 帮助

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Precision test technology of liquid refractive index using the method of minimum deviation angle 期刊论文  OAI收割
Chinese Optics, 2019, 卷号: 12, 期号: 4, 页码: 826-832
作者:  Y.-S.Sun;  C.Y;  H.B;  Y.L
  |  收藏  |  浏览/下载：15/0  |  提交时间：2020/08/24
Accuracy modeling and analysis for a lock-or-release mechanism of the Chinese Space Station Microgravity Platform 期刊论文  OAI收割
MECHANISM AND MACHINE THEORY, 2018, 卷号: 130, 页码: 552-566
作者:  Ding, Jian;  Liu, Jinguo;  Zhang, Rongpeng;  Zhang, Lu;  Hao, Guangbo
  |  收藏  |  浏览/下载：24/0  |  提交时间：2021/02/02
Accuracy modeling and analysis for a lock-or-release mechanism of the Chinese Space Station Microgravity Platform 期刊论文  OAI收割
MECHANISM AND MACHINE THEORY, 2018, 卷号: 130, 页码: 552-566
作者:  
  |  收藏  |  浏览/下载：24/0  |  提交时间：2021/02/02
Accuracy modeling and analysis for a lock-or-release mechanism of the Chinese Space Station Microgravity Platform 期刊论文  OAI收割
Mechanism and Machine Theory, 2018, 卷号: 130, 页码: 552-566
作者:  Hao, Guangbo;  Ding J(丁建);  Liu JG(刘金国);  Zhang RP(张荣鹏);  Zhang, Lu
  |  收藏  |  浏览/下载：32/0  |  提交时间：2018/10/08
A Multilevel Correction Method for Interior Transmission Eigenvalue Problem 期刊论文  OAI收割
JOURNAL OF SCIENTIFIC COMPUTING, 2017, 卷号: 72, 期号: 2, 页码: 586-604
作者:  Xie, Hehu;  Wu, Xinming
  |  收藏  |  浏览/下载：16/0  |  提交时间：2018/07/30
开放式数字印刷控制系统中的关键技术研究 学位论文  OAI收割
工学博士, 中国科学院自动化研究所: 中国科学院大学, 2014
作者:  胡建华
收藏  |  浏览/下载：74/0  |  提交时间：2015/09/02
Communication synchronization in wireless optical link (EI CONFERENCE) 会议论文  OAI收割
2012 International Conference on Control Engineering and Communication Technology, ICCECT 2012, December 7, 2012 - December 9, 2012, Shenyang, Liaoning, China
作者:  Guo J.;  Guo J.;  Wang H.;  Wang H.;  Wang H.
收藏  |  浏览/下载：30/0  |  提交时间：2013/03/25
An FPGA based transceiving synchronization method is demonstrated for Free Space Optical (FSO) communication system  which is discussed separately as the transmitting protocol and the receiving protocol. During the discussion of these two parts  the co-operation of them is also discussed. The transmitting protocol interfaces the outer input data with a parallel port  buffers the input data  encodes the input data stream  serializes the parallel data and outputs the serialized data. It also has an output management unit to manage the activity of each part of the transmitting protocol. The receiving protocol filters and synchronizes the input serial data stream  parallels the serial data stream  decodes the input data  checks received error  handles transmission exception and interfaces the outer receiver with a parallel port. The entire transceiving protocol could be programmed into a single FPGA chip to improve system integrity and reduce the system cost. The presented protocol could be taken as "protocol transparent" for outer interfaces  meaning that when interfacing the presented system to an outer system  users don't have to consider what protocol the outer system transceiving data stream is under  for example  the TCP/IP protocol or anything else  in the case that its I/O interface is a parallel port. Simulation and final experiment prove that the protocol presented is a working solution at a certain bit rate scale. 2012 IEEE.  
Physical layer design for free space optical communication (EI CONFERENCE) 会议论文  OAI收割
2012 International Conference on Control Engineering and Communication Technology, ICCECT 2012, December 7, 2012 - December 9, 2012, Shenyang, Liaoning, China
作者:  Wang H.;  Zhang Q.;  Guo J.;  Guo J.;  Wang H.
收藏  |  浏览/下载：29/0  |  提交时间：2013/03/25
A small size Free Space Optical Communication System is introduced  including the hardware and the hardware specified physical layer protocol. In detail  the rapid synchronization method to reduce the handshake bandwidth requirement is demonstrated. The hardware of the system includes the laser driver system  the signal amplifying and shaping system  the data interface system. The hardware specified physical layer protocol is used to interface the outer data  serialize and deserialize the data stream  check transmission errors and schedule the data transmission. The overall system is a FIFO-like system and the user can use it as if he's operating a FIFO. The system is designed mainly for terrestrial FSO link whose signal channel is the atmosphere. Due to the complex composition and activity of the atmosphere  this signal channel brings in great influence on the transmitting laser in it  for example  the absorption and scattering of the atmosphere molecules and aerosols  the scintillation of received laser power caused by the turbulence of the atmosphere  all of which results in a much higher Bit Error Rate (BER) of the communication system than wired communication systems leading to frequent resynchronization. In our system  the sampling clock is generated locally using multi-phase sampling technique rather than PLLbased clock recovery  which helps to rapid synchronization. 2012 IEEE.  
The effect of backlash nonlinear on resonance frequency of electric actuator transmission system (EI CONFERENCE) 会议论文  OAI收割
3rd IEEE International Conference on Advanced Computer Control, ICACC 2011, January 18, 2011 - January 20, 2011, Harbin, China
Han X.; Ge M.; Bai Y.; Jia H.; Ge W.
收藏  |  浏览/下载：22/0  |  提交时间：2013/03/25
In order to study the effect of backlash nonlinear on resonance frequency of electric actuator transmission system  then  Finally  in the premise of meeting the stability  the dynamic equilibrium equation of transmission system with backlash is established  it makes dynamic simulation analysis for the transmission system based on virtual prototype technology  it establishes balanced equation of dynamics system with backlash  the effect of backlash on system natural frequency and resonance frequency  and the theoretical values and simulation values are compared. Theoretical analysis and simulation results show that the theoretical analysis is basically consistent with simulation results when it is zero backlash  and does some theory research and dynamic analysis of backlash nonlinearity and system natural frequency and resonance frequency. First  and the error of theoretical analysis and simulation results is within 10%. Therefore  according to describing function to theoretically model the backlash nonlinear  it can be concluded that considering the transmission system theoretical analysis of backlash nonlinearity is feasible  the relation between describing function and the amount of backlash and input amplitude is analyzed  and it is much closer to the actual system with instructive significance. 2011 IEEE.  
Error-resilient h.264/avc video transmission using two-way decodable variable length data block 期刊论文  iSwitch采集
Ieee transactions on circuits and systems for video technology, 2010, 卷号: 20, 期号: 3, 页码: 340-350
作者:  Gao, Shaoshuai;  Ma, Kai-Kuang
收藏  |  浏览/下载：42/0  |  提交时间：2019/05/10