中国科学院机构知识库网格
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A power function model for simulating creep mechanical properties of salt rock 期刊论文  OAI收割
JOURNAL OF CENTRAL SOUTH UNIVERSITY, 2020, 卷号: 27, 期号: 2, 页码: 578-591
作者:  
Li, Huan;  William, Ngaha Tiedeu;  Daemen, Jaak;  Zhou, Jun;  Ma, Chang-kun
  |  收藏  |  浏览/下载:17/0  |  提交时间:2021/05/25
Method to calculate the error correction ability of tool influence function in certain polishing conditions 期刊论文  OAI收割
OPTICAL ENGINEERING, 2014, 卷号: 53, 期号: 7
作者:  
Wang, Jia;  Fan, Bin;  Wan, Yongjian;  Shi, Chunyan;  Zhuo, Bin
收藏  |  浏览/下载:38/0  |  提交时间:2015/07/10
Establishment of NmF2 empirical model in the northern hemisphere based on COSMIC occultation data 期刊论文  OAI收割
SCIENCE CHINA-TECHNOLOGICAL SCIENCES, 2014, 卷号: 57, 期号: 2, 页码: 339-344
作者:  
Niu Jun;  Fang HanXian;  Weng LiBin
收藏  |  浏览/下载:33/0  |  提交时间:2014/07/14
Research on the close noise field of the piezoelectric pump (EI CONFERENCE) 会议论文  OAI收割
2006 IEEE International Conference on Mechatronics and Automation, ICMA 2006, June 25, 2006 - June 28, 2006, Luoyang, China
Jizhuang L.; Jianhui Z.; Shouyin W.; Qixiao X.; Desheng L.
收藏  |  浏览/下载:53/0  |  提交时间:2013/03/25
Restraining the noise  meanwhile  improving the dynamic characteristics of the driving power of piezoelectric pump effectively are the final purposes of doing research on the reciprocating and flexural vibration of the piezoelectric vibrator. However  among many papers regarding piezoelectric pump  there are very few papers about the research on the noise of piezoelectric pump. This is far less than the research on the application of the piezoelectric pump in other fields. In this paper  the research on the flexural vibration deformation and vibration radiation noise of the piezoelectric vibrator are carried out. Firstly  the vibration equations of the piezoelectric vibrator are built and flexural vibration deformation function is deduced. Then  the simplified vibration model of the piezoelectric vibrator is introduced by using vibration theories of micro-area piston. Furthermore  theoretical calculation equations of sound pressure in close noise field and noise contribution equation of fluid in pump are deduced. Finally  a comparison is made between the theoretical calculation value and experimental value  and the contribution quantities of the piezoelectric vibrator and fluid in pump are obtained respectively under different frequencies. The consequence approves that the theory introduced by this research is true. 2006 IEEE.