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• 长春光学精密机械与物... [7]
• 高能物理研究所 [2]
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• 光电技术研究所 [1]
• 新疆天文台 [1]
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• OAI收割 [12]
• iSwitch采集 [1]

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• 会议论文 [7]
• 期刊论文 [6]

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• 2020 [1]
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浏览/检索结果: 共13条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Dynamic surface parameter analysis for frequency response of tip/tilt mirror 期刊论文  OAI收割 OPTIK, 2020, 卷号: 203 作者:  Xu, Guangzhou   |  收藏  |  浏览/下载：24/0  |  提交时间：2020/07/20 Tip/tilt mirror  Dynamic surface parameter  Discrete error  Opto-mechanical integrated simulation   Multiscale Computational Method for Dynamic Thermo-Mechanical Problems of Composite Structures with Diverse Periodic Configurations in Different Subdomains 期刊论文  OAI收割 JOURNAL OF SCIENTIFIC COMPUTING, 2019, 卷号: 79, 期号: 3, 页码: 1630-1666 作者:  Dong, Hao;  Zheng, Xiaojing;  Cui, Junzhi;  Nie, Yufeng;  Yang, Zhiqiang   |  收藏  |  浏览/下载：67/0  |  提交时间：2020/01/10 Dynamic thermo-mechanical problems  Multiscale asymptotic analysis  Diverse periodic configurations  Error estimate  SOTS numerical algorithm   Noise analysis of grating-based x-ray differential phase-contrast imaging with angular signal radiography 期刊论文  iSwitch采集 Chinese physics b, 2017, 卷号: 26, 期号: 4, 页码: 6 作者:  Faiz, Wali;  Bao, Yuan;  Gao, Kun;  Wu, Zhao;  Wei, Chen-Xi 收藏  |  浏览/下载：49/0  |  提交时间：2019/04/23 Angular signal radiography  Signal-to-noise ratio  Photon statistical noise  Mechanical error   Noise analysis of grating-based x-ray differential phase-contrast imaging with angular signal radiography 期刊论文  OAI收割 CHINESE PHYSICS B中国物理. B, 2017, 卷号: 26, 期号: 4, 页码: 40602 作者:  Faiz, W;  Zhu PP(朱佩平);  Tian, YC;  Zhu, PP;  Zan, GB   |  收藏  |  浏览/下载：36/0  |  提交时间：2019/08/27 angular signal radiography  signal-to-noise ratio  photon statistical noise  mechanical error   Electromechanical coupling based performance evaluation of distorted phased array antennas with random position errors 期刊论文  OAI收割 International Journal of Applied Electromagnetics and Mechanics, 2016, 卷号: 51, 期号: 3, 页码: 285-295 作者:  Wang, Congsi;  Duan, Baoyao;  Jiang, Chao;  Zhang, Yiqun;  Zhong, Jianfeng   |  收藏  |  浏览/下载：38/0  |  提交时间：2017/07/03 Phased Array Antenna  Electromechanical Coupling  Random Error  Mechanical Distortion   The advancement of the high precision stress polishing 期刊论文  OAI收割 Proceedings of SPIE: 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 2016, 卷号: 9683, 页码: 96831F 作者:  Li, Chaoqiang;  Lei, Baiping;  Han, Yu   |  收藏  |  浏览/下载：23/0  |  提交时间：2018/06/14 Aspherics  Error Analysis  Manufacture  Mechanical Actuators  Mirrors  Polishing   Precision analysis of simulation systems with hardware-in-loop caused by performance of three-Axis virtual flight motion simulator (EI CONFERENCE) 会议论文  OAI收割 2011 International Conference on Manufacturing Science and Technology, ICMST 2011, September 16, 2011 - September 18, 2011, Singapore, Singapore Wang T.; Zhu M.-C.; Yin S.-L.; Jia H.-G. 收藏  |  浏览/下载：46/0  |  提交时间：2013/03/25 Simulation systems with hardware-in-loop are composed by three-Axis virtual flight motion simulator  simulation computer  load torque simulator  and visual simulation systems. Three-Axis Virtual Flight Motion Simulator are used to simulate the attitude of missile in simulation system with hardware-in-loop  so its performance influenced the result of simulation directly. This paper mainly analyzed the factors which influenced the performance of a three-Axis virtual flight motion simulator which we are used now in the lab  then analyzed the entire simulation system's error caused by these factors through numerical simulation method. By analysis we can see that bandwidth is the main factor influenced the precision of simulation systems with hardware-in-loop  mechanical device installation error and measurement error may also cause some errors of the systems at the same time.   Research on computer control strategy for optical electric tracking system (EI CONFERENCE) 会议论文  OAI收割 2011 IEEE International Conference on Mechatronics and Automation, ICMA 2011, August 7, 2011 - August 10, 2011, Beijing, China 作者:  Li M. 收藏  |  浏览/下载：23/0  |  提交时间：2013/03/25 In this paper  mathematic model and computer control strategy for optical electrical tracking system have been researched and discussed. First  the system's structure and its work process have been analyzed. Second  according to the system's moving law  the system's mathematic model has been built. As to the computer control strategy  trigger guiding  two closed loop PID control method as well as compound control method have been applied to satisfy the tracking accuracy. Third  we apply the bilinear transformation to get the digital system  and the sample time is 800Hz. The simulation results indicate that the maximum tracking error can be limited to less than 0.5 and the regulator time can be 0.04s. Then the control project resonance frequency should be more than 200Hz and the sample frequency should be more than 400Hz to meet the control accuracy requirement. So we can conclude that the system indexes such as swiftness  high accuracy as long as real time have been satisfied. And the requirement of mechanical property has been present which is very useful to mechanical working. 2011 IEEE.   Research on servo controller for high speed tracking system (EI CONFERENCE) 会议论文  OAI收割 2011 International Conference on Mechatronic Systems and Automation Systems, MSAS 2011, July 23, 2011 - July 24, 2011, Xi'an, China 作者:  Li M. 收藏  |  浏览/下载：17/0  |  提交时间：2013/03/25 To meet requirement of swiftness and minimization for the tracking system as well as realize horizontal high accuracy tracking measurement  the automatic servo tracking measurement system has been designed. The two closed loop control  bisection method and compound control have been applied into the system. Experimental results show that the maximum tracking error can be limited to less than 0.5and the regulator time can be 0.04s. The control project resonance frequency should be more than 200Hz and the sample frequency should be more than 400Hz to meet the control accuracy requirement. And these specific mechanical properties indexes are useful to mechanical working to make sure the design can be realization. So the research in this paper has important value to the engineering practice. (2011) Trans Tech Publications.   The system of 24-channel digital potentiometers based on single-chip microcomputer (EI CONFERENCE) 会议论文  OAI收割 2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China Song X.-R.; Liu Z.-G.; Wu Z.-Y.; Yu A.-F. 收藏  |  浏览/下载：34/0  |  提交时间：2013/03/25 This paper introduces that using digital potentiometers output 24-channel resistance to simulate the thermistors. Every channel has two digital potentiometers  one is low resolution and high value  the other is high resolution and low value. They are connected through Daisy-Chain and share chip-select. 24-channel digital potentiometers share the SPI's clock and SDI. Input the parameter in the computer and then send it to the single-chip microcomputer. The single-chip microcomputer receives the parameter and sends it to the digital potentiometers. After correcting the errors  the system meets the demands which are resistance range of 040K and maximum error of 15. The design can replace the traditional way in which the mechanical potentiometers are used to simulate the thermistors. 2010 IEEE.