机构

• 金属研究所 [2]
• 长春光学精密机械与物... [2]

采集方式

• OAI收割 [4]

内容类型

• 会议论文 [2]
• 期刊论文 [2]

发表日期

• 2009 [1]
• 2006 [1]
• 2005 [1]
• 2004 [1]

学科主题

筛选

浏览/检索结果: 共4条，第1-4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 Disc varifocal mechanism to improve efficiency of scene matching navigation system (EI CONFERENCE) 会议论文  OAI收割 2009 2nd International Conference on Future Information Technology and Management Engineering, FITME 2009, December 13, 2009 - December 14, 2009, Sanya, China 作者:  Zhang C.-L. 收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25 In order to meet special requests of optical imaging sensor in scene matching navigation system  a disc varifocal mechanism is proposed for the flight vehicles of long flying time and range. Within small space occupied  it can obtain real images with various resolutions. Moreover  using plate traveling-wave Ultrasonic Motor as its driven motor can reduce energy loss  improve control precision and ensure image obtaining being real-time and stable. Disc varifocal mechanism driven by plate traveling-wave Ultrasonic Motor is high-response  and variation in load doesn't affect its performance parameter. Therefore  applying disc varifocal mechanism in scene matching navigation system  combing software and hardware  can obviously improve the accuracy  real-time and robust of scene matching navigation system. The experiment showed that when the weight of mechanism was 1.5kg  the shortest starting was 0.6ms  and the shortest shutoff was 0.5ms. 2009 IEEE.   Magnetic and corrosion properties of Fe56Co7M2Mo5Zr10B20 (M = W or Ni) bulk metallic glasses 期刊论文  OAI收割 Journal of Alloys and Compounds, 2006, 卷号: 422, 期号: 1-2, 页码: 28-31 D. Y. Liu; H. F. Zhang; Z. Q. Hu; W. Gao 收藏  |  浏览/下载：107/0  |  提交时间：2012/04/13 amorphous materials  casting  bulk metallic glasses  glass forming  ability  high saturation magnetization  p-c alloys  ferromagnetic glasses  amorphous-alloys  1.5 t  hcl  resistance  behavior  system   Er3+-Doped lutetium borosilicate glass for optical signal amplification at 1.5 m (EI CONFERENCE) 会议论文  OAI收割 Infrared Components and their Applications, November 8, 2004 - November 11, 2004, Beijing, China 作者:  Wang X.;  Wang X.;  Wang X.;  Zhang J.;  Zhang J. 收藏  |  浏览/下载：18/0  |  提交时间：2013/03/25 A new glass of Lu2O3-B2O 3-SiO2-Na2O-Er2O3 system is prepared by the technique of high-temperature melting at different temperatures and the formation range of the glass is experimentally obtained. Effects of the B2O3 content on the infrared spectral properties such as the 1.5 m emission bandwidth corresponding to 4I13/2&rarr4I15/2 transition and the Judd-Ofelt parameter t (t = 2  4  6) of Er3+ ions in the glass has been observed. The glass exhibits big integrated emission cross sections for the 1.5 m emission band. Excellent thermal stability of the glass has been demonstrated using differential thermal analysis. The Er 3+-doped lutetium borosilicate glass is a great candidate for broadband erbium doped fiber amplifiers.   Preparation, thermal stability and magnetic properties of Fe-Co-Ni-Zr-Mo-B bulk metallic glass 期刊论文  OAI收割 Intermetallics, 2004, 卷号: 12, 期号: 10-11, 页码: 1149-1152 D. Y. Liu; W. S. Sun; H. F. Zhang; Z. Q. Hu 收藏  |  浏览/下载：17/0  |  提交时间：2012/04/14 glasses  metallic  magnetic properties  thermal stability  high saturation magnetization  ferromagnetic glasses  supercooled  liquid  amorphous-alloys  forming ability  1.5 t  system  strength