机构

• 沈阳自动化研究所 [2]
• 长春光学精密机械与物... [1]

采集方式

• OAI收割 [3]

内容类型

• 会议论文 [2]
• 期刊论文 [1]

发表日期

• 2021 [1]
• 2016 [1]
• 2009 [1]

学科主题

筛选

浏览/检索结果: 共3条，第1-3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 Design and Implementation of Functional Safety Fieldbus Communication Protocol 会议论文  OAI收割 Chongqing, China, March 12-14, 2021 作者:  Zhou XF(周秀芳);  Xu AD(徐皑冬);  Yan BJ(闫炳均);  Sun Y(孙越);  Han XJ(韩晓佳)   |  收藏  |  浏览/下载：35/0  |  提交时间：2021/11/27 safety instrumented system  functional safety  fieldbus  residual error rate   New considerations for SIL verification of functional safety fieldbus communication 期刊论文  OAI收割 Journal of Loss Prevention in the Process Industries, 2016, 卷号: 43, 页码: 488-502 作者:  Ding L(丁龙) 收藏  |  浏览/下载：22/0  |  提交时间：2016/08/14 Safety integrity level  functional safety fieldbus communication  residual error probability  residual error rate  safety communication layer  safety instrumented system   Fabrication and testing 600mm diameter brazing SiC mirror (EI CONFERENCE) 会议论文  OAI收割 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, November 19, 2008 - November 21, 2008, Chengdu, China 作者:  Wang X.;  Zhang X.-J.;  Zhang Z.-Y.;  Zhang Z.-Y.;  Wang X. 收藏  |  浏览/下载：21/0  |  提交时间：2013/03/25 SiC is a preferential material for space large aperture mirror at present. Aperture of 1 meter sic mirror can meet most requirements of space optical systems. For larger aperture sic mirror  it is not economical and safe to make the monolithic body directly. The SiC mirror brazed assembly with several segments can solve these problems. In this paper  one 600 mm sic plane mirror as demonstration welded with 3 radial segments is roughly grinded to the required figure at first  then the mirror is finely grinded and polished by CCOS technology  the RMS of the figure error is less than 1/20 ( = 632.8nm) finally. The problems of the preferential removal near braze joint and material removing rate influenced by deformation of mirror surface are solved. Methods of reducing the residual stress of mirror are discussed. At last  some measurements and experiments are carried on  and the results conclude that the brazed SiC mirror can meet the requirement of large aperture optical systems. 2009 SPIE.