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Comparison of the reliability-based and safety factor methods for structural design 期刊论文  OAI收割
APPLIED MATHEMATICAL MODELLING, 2019, 卷号: 72, 页码: 68-84
作者:  
Wang XJ;  Shi QH;  Fan WC;  Wang RX(王睿星);  Wang L
  |  收藏  |  浏览/下载:50/0  |  提交时间:2019/09/09
An efficient single-loop strategy for reliability-based multidisciplinary design optimization under non-probabilistic set theory 期刊论文  OAI收割
AEROSPACE SCIENCE AND TECHNOLOGY, 2018, 卷号: 73, 页码: 148-163
作者:  
Wang XJ;  Wang RX(王睿星);  Wang L;  Chen XJ;  Geng XY
  |  收藏  |  浏览/下载:41/0  |  提交时间:2018/10/30
The Exploration of Superiority about the Non-probability Reliability-Based Design Optimization Compared to the Safety Factor Method 会议论文  OAI收割
Beijing, PEOPLES R CHINA, OCT 22-23, 2017
作者:  
Fan WC;  Wang XJ;  Wang RX(王睿星);  Wang L
收藏  |  浏览/下载:27/0  |  提交时间:2018/06/06
RSM and FORM for elastic-strain-softening rock mass excavation 会议论文  OAI收割
Tongji Univ, Shanghai, PEOPLES R CHINA, JUN 18-20, 2013
作者:  
Song, Li;  Li, Hang Zhou;  Liao, Hong Jian;  Zhao, Gui Ping
  |  收藏  |  浏览/下载:24/0  |  提交时间:2018/06/05
Structural reliability analysis and reliability-based design optimization: Recent advances 期刊论文  OAI收割
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2013, 卷号: 56, 期号: 9, 页码: 1611-1618
作者:  
Qiu ZhiPing;  Huang Ren;  Wang XiaoJun;  Qi WuChao
  |  收藏  |  浏览/下载:16/0  |  提交时间:2021/02/26
Study on ultra-light secondary baffle for coaxial two-mirror 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:  
Zhang L.;  Zhang L.
收藏  |  浏览/下载:63/0  |  提交时间:2013/03/25
The coaxial two-mirror telescope consists of two mirrors facing each other. Classical two-mirror arrangements are Gregorian and Cassegrain. These systems are usually applied to space telescopes and often have optical baffles to prevent stray light from entering the focal plane. The optical baffles consist of concentric rings suspended between the secondary and the primary mirror. The secondary baffle for a large two-mirror optical system is designed and analyzed in this paper. According to mission of a telescope  the structure should have high stiffness and high reliability and light weight. Compared with invar  aluminum alloy and titanium alloy  carbon fiber composite is currently the best material in terms of weight-to-strength ratio. It also has advantages of high temperature tolerance and low thermal expansion. So carbon fiber composite is chosen as material to meet requirements of the coaxial telescope. In this paper  optimization method based on finite element analysis (FEA) is used for design the secondary baffle. Minimum weight of the baffle is chosen as an objective function. Thicknesses of former tube and vanes are chosen as variables. Analysis results show that the designed secondary baffle has maximum diameter of 180mm  total length of 120mm and weighs 142g. And its fundamental frequency reaches 651Hz. Therefore the baffle has many advantages  such as ultra-light weight  high stiffness and dimensional stability  etc. The optimization method and the baffle design can be helpful to other coaxial telescopes  such as Cassegrain  Gregorian and their subdivisions. 2012 IEEE.  
Research of software re-injection technology for aerospace camera controller in-orbit (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
Xu W.
收藏  |  浏览/下载:21/0  |  提交时间:2013/03/25
For the factors of increased of tasks  enhancements of functions and improvement of integrity and complexity in aerospace camera  application system has raised high and long-term in-orbit autonomy and reliability requirements on camera controller. Based on an actual project application background  this paper has put forward a design method of new high reliability aerospace camera controller in-orbit software reinjection instruction sequence which use TSC695F as kernel CPU and process flow of bootstrap receive  cache  checkout and storage update data. Finally  combined with specific test module for camera controller software re-injection  the validity of the software re-injection method raised here has been verified. Still here gives out reference codes of update data package which generated by the ground. 2012 IEEE.  
Application of quantitative fault tree analysis based on fuzzy synthetic evaluation to software development for space camera (EI CONFERENCE) 会议论文  OAI收割
2011 2nd International Conference on Artificial Intelligence, Management Science and Electronic Commerce, AIMSEC 2011, August 8, 2011 - August 10, 2011, Zhengzhou, China
作者:  
Li Y.;  Li Y.;  Li Y.;  Li Y.
收藏  |  浏览/下载:29/0  |  提交时间:2013/03/25
Software reliability analysis is a significant measure to guide design of software reliability. Now software fault tree method to carry on software reliability analysis is used more and more. But it can only qualitative carry on the analysis because of many reasons. For example  the scale of software is enlarging  the software architecture is getting more and more complex  the reason of software fault is very difficult to analyze  the software is difference with hardware  and it is very hard to obtain the expiration the quantitative data and so on. The space camera is extremely high to the reliable request. So the qualitative analysis is unable to satisfy the analysis request. In view of space camera characteristics  a method of fault tree analysis based on fuzzy synthetic evaluation is proposed. The results show that the new method makes software quantitative fault tree analysis possible and optimizes. It can also solve the problem of software component which is unable to quantize precisely. 2011 IEEE.  
Design and demonstration of micro multi-step mirrors and light source in micro FTIR (EI CONFERENCE) 会议论文  OAI收割
6th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2011, February 20, 2011 - February 23, 2011, Kaohsiung, Taiwan
Liang Z.; Fu J.; Feng C.; Liang J.
收藏  |  浏览/下载:46/0  |  提交时间:2013/03/25
To obtain high resolution  high signal-to-noise ratio (SNR)  high reliability and real time in wide spectral range  we study the space modulation Micro Fourier Transform Spectrometer (FTS) based on multi-step mirrors covering the spectral range of 3-5m and 8-12 m in theory and experiment. The influences of spectrum reconstruction caused by the diffraction and extended light source in Fourier Transform Infrared Spectrometer (FTIR) are analyzed. A method to reduce the noises in spectrum reconstruction and the relationship between coherent intensity and solid angle of light source are discussed. An extended light source with suitable size is chosen  considering the requirement of SNR and spectrum resolving power in the optical design. Furthermore  the fabrication of micro multi-step mirrors  which is the core part of FTS  is investigated. Three methods for fabricating multi-step micro mirrors are demonstrated. 2011 IEEE.