中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共3条，第1-3条

帮助

条数/页：排序方式：
	Unsteady Flow at Low Flow-rate Region in a Semi-open Propeller Fan (Velocity Fluctuation outside of Blade Tip) 期刊论文 OAI收割 JOURNAL OF THERMAL SCIENCE, 2011, 卷号: 20, 期号: 3, 页码: 218,223 Norimasa SHIOMI; Yoichi KINOUE; Ying-zi JIN; Pin LIU; Toshiaki SETOGUCHI 收藏 \| 浏览/下载：30/0 \| 提交时间：2012/12/20 Semi-opened fan Propeller fan Unsteady flow measurement and FFT analysis
	Dynamic evaluation system for interpolation errors in the encoder of high precision (EI CONFERENCE) 会议论文 OAI收割 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 19, 2008 - November 21, 2008, Chengdu, China 作者: Liang L.-H.; Sun Y.; Sun Y.; Wan Q.-H. 收藏 \| 浏览/下载：41/0 \| 提交时间：2013/03/25 In order to measure dynamic interpolation errors of photoelectric encoder of high precision the dynamic evaluation system of interpolation errors is introduced. Firstly the fine Moire signal of encoder which is collected with the high-speed data gathering card into the computer is treated to equiangular data with the method of linear interpolation. Then the analysis of harmonic wave with the FFT is processed. Compared with the standard signal the dynamic interpolation errors of the encoder are calculated. Experimental results show that the precision of the dynamic evaluation system of interpolation errors is 0.1 %( pitch). The evaluation system is simple fast high precision and can be used in the working field of the encoder. 2009 SPIE.
	Observations on subband electron properties in in0.65ga0.35as/in0.52al0.48as mm-hemt with si delta-doped on the barriers 期刊论文 iSwitch采集 Acta physica sinica, 2007, 卷号: 56, 期号: 7, 页码: 4143-4147 作者: Zhou Wen-Zheng; Lin Tie; Shang Li-Yan; Huang Zhi-Ming; Zhu Bo 收藏 \| 浏览/下载：44/0 \| 提交时间：2019/05/12 Sdh oscillation Two-dimensional electron gas Fft analysis Self-consistently calculation