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浏览/检索结果: 共9条,第1-9条 帮助

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Mass-property Identification System for Three-axis Air Bearing Table Based on Simulated annealing Algorithm and Fading Memory Filter 会议论文  OAI收割
Shanghai, China, 2021-07-26
作者:  
Wang, Zhenyu;  Li, Zening;  Xu, Xu;  Li, Zhiguo;  Ma, Guangcheng
  |  收藏  |  浏览/下载:89/0  |  提交时间:2021/11/01
Performance and microbial community of a novel non-aeration-based up-flow bioelectrochemical filter (UBEF) treating real domestic wastewater 期刊论文  OAI收割
CHEMICAL ENGINEERING JOURNAL, 2019, 卷号: 348, 期号: 2018, 页码: 271-280
作者:  
Yang, Nuan;  Zhan, Guoqiang;  Li, Daping;  He, Xiaohong;  Zhang, Yanyan
  |  收藏  |  浏览/下载:81/0  |  提交时间:2020/12/24
Poly(lactic-co-glycolic acid)/polycaprolactone nanofibrous membranes for high-efficient capture of nano- and microsized particulate matter 期刊论文  iSwitch采集
Journal of biomedical nanotechnology, 2018, 卷号: 14, 期号: 1, 页码: 179-189
作者:  
Xu, Wenshi;  Guo, Mengyu;  Liu, Jing;  Xiao, Yating;  Zhou, Guoqiang
收藏  |  浏览/下载:55/0  |  提交时间:2019/04/23
Mixed cellulose ester filter as a separator for air-diffusion cathode microbial fuel cells 期刊论文  OAI收割
ENVIRONMENTAL TECHNOLOGY, 2017, 卷号: 38, 期号: 8, 页码: 979-984
作者:  
Wang, Zejie;  Lim, Bongsu
收藏  |  浏览/下载:40/0  |  提交时间:2017/06/21
藏东南森林对持久性有机污染物的过滤和蓄积研究 学位论文  OAI收割
北京: 中国科学院大学;中国科学院青藏高原研究所, 2015
作者:  
薛永刚
  |  收藏  |  浏览/下载:27/0  |  提交时间:2019/07/25
A 3-axis simulator for spacecraft attitude control research (EI CONFERENCE) 会议论文  OAI收割
2010 IEEE International Conference on Information and Automation, ICIA 2010, June 20, 2010 - June 23, 2010, Harbin, Heilongjiang, China
作者:  
Dai L.
收藏  |  浏览/下载:30/0  |  提交时间:2013/03/25
This article presents the details of a new 3-axis simulator for spacecraft attitude control research and simulation. The air bearing allows the test bed to rotate about three axes with tiny friction. The attitude determination system consists of three fibre optical gyros  an inclinometer and a magnetometer. The actuator of the system consists of three reaction flywheels and four control moment gyros (CMG). Mathematical models of the sensors and actuators are given to help algorithm design. An extended Kalman filter was designed to provide attitude information for controller. Mathematical simulation results prove the attitude determination system can achieve high precision. A coulomb friction model of reaction wheels is given with experimental results. A friction compensation algorithm was developed to raise the pointing accuracy of the control system. The article also describes the details of the hardware structure. A PD stabilizing controller is implemented to test the validation of the whole control system at last. 2010 IEEE.  
Methods to Assess Carbonaceous Aerosol Sampling Artifacts for IMPROVE and Other Long-Term Networks 期刊论文  OAI收割
Journal of the Air & Waste Management Association, 2009, 卷号: 59, 期号: 8, 页码: 898-911
J.G. Watson; J.C. Chow; L.W.A. Chen; N.H. Frank
收藏  |  浏览/下载:60/0  |  提交时间:2011/05/03
Methods to Assess Carbonaceous Aerosol Sampling Artifacts for IMPROVE and Other Long-Term Networks 期刊论文  OAI收割
Air & Waste Management Association, 2009, 卷号: 59, 期号: 8, 页码: 898-911
J.C. Chow; J. G. Watson; L.W. A. Chen; N.H. Frank
收藏  |  浏览/下载:121/0  |  提交时间:2011/05/09
Optical characteristic of ion beam sputter deposited aluminum thin films (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging, ISPDI 2007: Optoelectronic System Design, Manufacturing, and Testings, September 9, 2007 - September 12, 2007, Beijing, China
作者:  
Yang H.;  Liu L.;  Liu L.
收藏  |  浏览/下载:28/0  |  提交时间:2013/03/25
Aluminum is a typical active metal very easy to oxidize. An oxide surface layer of about 2-6nm quickly formed in air which adds difficulty to the optical constants determination. An ex-situ method is used to determine the optical constants of aluminum thin films. First  Second  Third  alumina (Al2O3) thin film is deposited by ion beam sputter deposition. The optical constants and thickness are determined by spectral ellipsoemtry (SE). The thickness is verified by grazing x-ray reflection (GXRR) fitting method  Al thin film with an Al2O3 cap layer on top is deposited. This cap layer is of the same deposition condition with the first step. By fitting the GXRR spectra  based on the acquired structure information  the structure information (the thickness of the aluminum and the cap layer  the ellipsometric spectra are fitted. The optical constants of the aluminum layer are extracted with the aid of the Drude model. Finally  surface roughness and the diffusion between Al-Al2O 3) is obtained  an induced transmission filter (ITF) is designed and deposited.