中国科学院机构知识库网格系统: 检索

Self-healing of TiSiN/Ag coatings induced by Ag 期刊论文 OAI收割
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2019, 卷号: 102, 期号: 12, 页码: 7521-7532
作者: Zhu, Yebiao; Dong, Minpeng; Zhao, Xiaoran; Li, Jinlong; Chang, Keke

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ANTIBACTERIAL ACTIVITY MECHANICAL-PROPERTIES ION MICROSTRUCTURE RESISTANCE DESIGN POINTS STRESS FILMS TI

A quantitative prediction of the viscosity of ionic liquids using S sigma-profile molecular descriptors 期刊论文 OAI收割
Physical Chemistry Chemical Physics, 2015, 期号: 5, 页码: 3761-3767
Zhao, Y. S.; Huang, Y.; Zhang, X. P.; Zhang, S. J.

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ARTIFICIAL NEURAL-NETWORK STRUCTURE-PROPERTY RELATIONSHIPS COSMO-RS MELTING-POINTS PHYSICAL-PROPERTIES SURFACE TENSIONS QSPR CORRELATION TEMPERATURE MODEL DESIGN

Structural design of primary mirror subassembly for space telescope (EI CONFERENCE) 会议论文 OAI收割
2nd International Conference on Mechatronics and Applied Mechanics, ICMAM 2012, December 8, 2012 - December 9, 2012, Taiwan
作者: Xu H.

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In order to design a large aperture primary mirror with the diameter of 1150 mm the parameters impacting on gravity deformation of the mirror were analyzed and discussed in detail including material selection diameter-thickness ratio the number of the support points location selection and lightweight structure etc. A novel space mirror structure system was put forward and its back was opened and supported by six points on back. The dynamic and static and thermal characteristics were analyzed based on the finite element method. Analysis results showed the surface figure accuracy reached to RMS 14.5nm under the action of gravity load along the optical axis direction and the first-order natural frequency was 214Hz which met to the designed indexes requirements. (2013) Trans Tech Publications Switzerland.

The aircraft autopilot design of parameters changing in a wide range (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Electric Information and Control Engineering, ICEICE 2011, April 15, 2011 - April 17, 2011, Wuhan, China
Zhen D.; Yue Z.

收藏 | 浏览/下载：28/0 | 提交时间：2013/03/25

Autopilot is an important part of aircraft Under the action of the disturbance torque for the flight parameters of aircraft Changing in a wide range the range was about 16km on the basic of analyzing the typical trajectory the max height was about 5100m the trajectory of feature points were selected the deviation of lateral was about 12m taking pitch control loop for example the maximum angle of attack was about 3.6 a sub- PID autopilot was designed using classical control theory the maximum elevator deflection was less than 5 using single-mode Transient suppression method the maximum aileron deflection was less than 2 the overload due to control surface transition deflection was avoided when control parameters changing the maximum roll was less than 5 the verification was done by non-linear simulation. The result showed that: the phase margin of autopilot was greater than 30 the response of overload can accurately track the given overload instruction. An autopilot design method of aircraft of parameter changes in a wide range was provided. 2011 IEEE. the bandwidth was more than 14rad / s the settling time was less than 0.7s the maximum overshoot was 23.3%

Theoretical and engineering research on the municipal solid waste plasma gasification 会议论文 OAI收割
International Conference on Thermal Treatment Technologies and Hazardous Waste Combustors 2011, Jacksonville, FL, United states, MAY 10-13, 2011
作者: Sheng HZ(盛宏至); Deng J(邓晶); Li YJ(李要建); Xu YX(徐永香); Sheng HZ(盛宏至)

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Atmospheric pressure Calorific value Combustion Combustors Conceptual design Energy conversion Gas engines Gasification Hazardous materials Heat treatment Hydrochloric acid Organic pollutants Plasma applications Plasmas Radioactive waste disposal Synthesis gas Waste disposal Waste treatment Cooling process Dew points Energy recovery Engine generator Environmentally-friendly technology HCl gas High temperature Hot syngas Kitchen garbage Lower heating value MSW Plasma gasification Plasma reactors Pre-processing Pretreatment systems Reaction temperature Reactor Reactor chamber Syn-gas

Using bidirectional binary particle swarm optimization for feature selection in feature-level fusion recognition system (EI CONFERENCE) 会议论文 OAI收割
2009 4th IEEE Conference on Industrial Electronics and Applications, ICIEA 2009, May 25, 2009 - May 27, 2009, Xi'an, China
作者: Wang D.; Wang Y.; Wang Y.; Wang Y.; Wang Y.

收藏 | 浏览/下载：24/0 | 提交时间：2013/03/25

In feature-level fusion recognition system the other is optimizing system sensor design to get outstanding cost performance. So feature selection become usually necessary to reduce dimensionality of the combination of multi-sensor features and improve system performance in system design. In general there are two main missions. One is improving the recognition correct rate as soon as possible the optimization is usually applied to feature selection because of its computational feasibility and validity. For further improving recognition accuracy and reducing selected feature dimensions this paper presents a more rational and accurate optimization Bidirectional Binary Particle Swarm Optimization (BBPSO) algorithm for feature selection in feature-level fusion target recognition system. In addition we introduce a new evaluating function as criterion function in BBPSO feature selection method. At the last we utilized Leave-One-Out method to validate the proposed method. The experiment results show that the proposed algorithm improves classification accuracy by two percentage points while the selected feature dimensions are less one dimension than original Particle Swarm Optimization approach with 16 original feature dimensions. 2009 IEEE.

An 8-channel, area-efficient, low-power audio sampling rate converter (EI CONFERENCE) 会议论文 OAI收割
9th International Conference on Electronic Measurement and Instruments, ICEMI 2009, August 16, 2009 - August 19, 2009, Beijing, China
作者: Liu Y.; Liu Y.; Liu Y.; Wang D.

收藏 | 浏览/下载：28/0 | 提交时间：2013/03/25

A novel 8-channle third area-efficient next a new Timing Division Multiplexer (TMD) scheme lowers clock working rate to minimum in order to save power a novel memory addressing scheme reduces 20% data memory at least. Experiments show proposed methods could not only saved hardware resources but also reduce power consumption low-power audio sampling rate converter is proposed in this paper so it is very suitable for consumer electronics. 2009 IEEE. conversion ratio is 2:1 and 4:1. Filter design and implementation are the key points for the converter. First excluded data and coefficients memories adopting multiplier-free Arithmetic Unit (AU) and rounding methods allows its realization in a cell area of only 0.038mm 2 in 0.18 m technology

Investigation on a truncated streamline-traced hypersonic Busemann inlet 会议论文 OAI收割
15th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, Dayton, OH, United states, April 28, 2008 - May 1, 2008
作者: Xiao YB(肖雅彬); Yue LJ(岳连捷); Gong P; Chang XY(张新宇)

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Boundary layer corrections Busemann inlet Core flow Correction method Design points Finite differential methods Internal contraction ratio Internal flows Mass flow

Design of dual-FOV refractive/diffractive LWIR optical system (EI CONFERENCE) 会议论文 OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Advanced Optical Manufacturing Technologies, July 8, 2007 - July 12, 2007, Chengdu, China
作者: Wang L.-J.; Zhang J.-P.; Wang L.-J.; Zhang X.; Zhang X.

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An infrared-optical zoom system using binary element is proposed in this paper. The two main advantages of the zoom system introducing here are: bigger F-number and lower cost. The primary optical properties are: F/#=1 Second Others zoom ratio =1:4 binary element is used to correct the chromatical aberration by taking the advantage of negative dispersion characteristics and the cost of the system is lower than that of conventional ones with Zinc Selenide (Znse) material at the same level. In the binary element is rotational symmetric with one step which is easy to fabricate in order to balance 5th spherical aberration and dual field are 26.6 and 5.6respectively. Wider field of view is used for search and the smaller one is used for imaging details. This system uses un-cooled infrared detector with 320240 pixels and 45m pixel size. The F-number matches the sensitivity range of the detector array. Three aspects are considered during design process to make the system more satisfactory and more achievable. First 5th coma aberration and 5th astigmatic aberration the manner of zoom is accomplished by exchanging tow lenses into the smaller field of view system layout. The lens exchange manner faces the requirement of simple system structure and good image quality in both focal points. It can also make the system more feasible in the alignment process than mechanical-zooming manner and optical-zooming manner high-order asphere surfaces with 2th order to 10 th order are also hired in the system. Asphere surface is useful in compressing the system and improving optical system transmittance. This kind asphere surface is on industrial level featuring low cost and easy to fabricate. It is shown that good image quality can achieved by implementing five Germanium lenses and the transmittance of system is 72%. All aberrations are diffraction-limited both spherical aberration and astigmatic aberration are corrected. When the field of view(FOV) is 26.6 and the focal length is 152mm MTF at Nyquist frequency(11lp/mm) is great than 0.7. The spherical aberration is -0.0073. The coma aberration is 0.0978 and the astigmatic aberration is -0.013. When the field of view(FOV) is 5.6 and the focal length is 38mm MTF at Nyquist frequency is great than 0.8 with spherical aberration -0.0046 the coma aberration 0.055 and astigmatic aberration 0.034.

Support technique of ultra thin mirror in space optics (EI CONFERENCE) 会议论文 OAI收割
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, November 2, 2005 - November 5, 2005, Xian, China
作者: Ren J.-Y.; Gao M.-H.

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With the development of space optical system the technique of ultra thin mirror come forth and is paid more attention because of less difficulty in machining low cost lightweight no disassembly during detecting and maintaining. The key technique takes advantage of deformation of ultra thin mirror as the influence of environment to adjust the surface figure. Its accuracy meets requirement. An analysis method is based on finite element analysis (FEA) and many items including the amount of support points the way of arrangement the optimum design of support component are studied. The finite element method was used to analyze the mirror and some different mirror support schemes. The principal aim of the mirror analysis is to get numbers of support points and the ways of the support. There are three schemes including 12-6-1 12-8-1 and 16-8-1 models. Deformation of deadweight is calculated under the three conditions. The way of 16-8-1 is more suitable than the designs of other two. The support subassembly is amended to meet with the mirror surface RMS in the range of 30m. Deformation of the mirror with support structure has been calculated. The result is 16.52nm lower than a quarter of the wavelength which indicates the feasibility of the support scheme applied to mirror. Theoretical result for the best way of support is presented. The result of analysis shows that requirement surface figure could be met through adjusting support points. It predicts feasibility of the support technique and provides theoretical value for active adjustment in the laboratory. At present support and adjusting experiment of ultra thin mirror is being carried on.