机构

• 长春光学精密机械与物... [2]

采集方式

• OAI收割 [2]

内容类型

• 会议论文 [2]

发表日期

• 2012 [1]
• 2010 [1]

学科主题

筛选

浏览/检索结果: 共2条，第1-2条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序作者升序作者降序 The design of computer-generated holograms for testing unsymmetrical optical surfaces (EI CONFERENCE) 会议论文  OAI收割 2012 International Symposium on Photonics and Optoelectronics, SOPO 2012, May 21, 2012 - May 23, 2012, Shanghai, China 作者:  Zhang X.;  Zhang Y.;  Zhang X.;  Zhang X. 收藏  |  浏览/下载：30/0  |  提交时间：2013/03/25 It is a technical difficulty to test the unsymmtrical optical surfaces in non-contact methods. But we can do it using computer-generated holograms (CGH). The principle and design of the CGH have been discussed in the paper. Take the cubic suface as an example  The order separation of the CGH is analyzed theoretically and the simulation result of the order separation is given in the paper. We develop the binary process of the continuous CGH phase function and get the sample of the amplitude CGH. A CGH for testing a cubic phase plate with duty cycle 0.5 is fabricated by using e-beam lithographic techniques. In this situation  the contrast of the interference fringe pattern can achieve a level of 99.4% by calculation. 2012 IEEE.   Model identification and closed-loop confirmation for opto-electronic platform of seeker (EI CONFERENCE) 会议论文  OAI收割 2010 2nd International Conference on Industrial Mechatronics and Automation, ICIMA 2010, May 30, 2010 - May 31, 2010, Wuhan, China 作者:  Liu H.;  Zhang J.;  Zhang J.;  Zhang J.;  Chen J. 收藏  |  浏览/下载：40/0  |  提交时间：2013/03/25 A mathematical model of seeker opto-electronic platform is the basis for researching performance  designing a servo control system and simulating. Focusing on high frequencies of mechanical resonant  restriction of gimbaled axis rotation  a new model identification method was proposed under the pseudo-random invert-M-sequences. The testing signal  data acquisition  the calculating of frequency response  and least square identification were investigated. The realized steps are explicitly illustrated  and the testing example is given in this paper  the results confirm that the proposed method is effective and practical. 2010 IEEE.