中国科学院机构知识库网格系统: 检索

Experimental Study on Natural Vibration Characteristics of Double-Strip High-Speed Pantograph Head 期刊论文 OAI收割
EXPERIMENTAL MECHANICS, 2023
作者: Xu, X; Zhang, H; Wei, X; Wu, M; Zhang, Z

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收藏 | 浏览/下载：16/0 | 提交时间：2023/06/15

Pantograph Modal characteristics Working height Boundary constraint

Performance characteristics and working fluid selection for high-temperature organic Rankine cycle driven by solar parabolic trough collector 期刊论文 OAI收割
INTERNATIONAL JOURNAL OF LOW-CARBON TECHNOLOGIES, 2021, 卷号: 16, 期号: 4, 页码: 1135-1149
作者: Zhao, Wei; Xie, Ning; Zhang, Wei; Yue, Jingpeng; Wang, Lingbao

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收藏 | 浏览/下载：25/0 | 提交时间：2023/11/20

performance characteristics working fluid selection organic Rankine cycle parabolic trough collector multi-objective optimization

Hot deformation map and its application of GH4706 alloy 期刊论文 OAI收割
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS, 2014, 卷号: 21, 期号: 5, 页码: 462-468
作者: Huang Shuo; Wang Lei; Lian Xintong; Zhao Guangpu; Li Fangfei

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收藏 | 浏览/下载：14/0 | 提交时间：2021/02/02

DYNAMIC RECRYSTALLIZATION MICROSTRUCTURAL CONTROL WORKING CHARACTERISTICS PROCESSING MAPS SUPERALLOY BEHAVIOR superalloys nickel alloys deformation microstructure dynamic recrystallization

Hot deformation map and its application of GH4706 alloy 期刊论文 OAI收割
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS, 2014, 卷号: 21, 期号: 5, 页码: 462-468
作者: Huang Shuo; Wang Lei; Lian Xintong; Zhao Guangpu; Li Fangfei

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收藏 | 浏览/下载：17/0 | 提交时间：2021/02/02

DYNAMIC RECRYSTALLIZATION MICROSTRUCTURAL CONTROL WORKING CHARACTERISTICS PROCESSING MAPS SUPERALLOY BEHAVIOR superalloys nickel alloys deformation microstructure dynamic recrystallization

Research on defect detection technology of C/C composite (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Advanced Engineering Materials and Technology, AEMT 2011, July 29, 2011 - July 31, 2011, Sanya, China
作者: Li W.; Wang H.; Wang H.; Wang H.; Wang H.

收藏 | 浏览/下载：33/0 | 提交时间：2013/03/25

Carbon matrix/Carbon fibre reinforced composite(C/C composite) has many special characteristics such as high strength high elastic modulus high temperature resistance and ablation resistance. So it is used to manufacture rocket engine nozzle in aerospace filed. But its security will be seriously effected during rocket engine working due to the manufacturing defects. Based on analyzing defect types and structure characteristic of C/C composite the ultrasonic and infrared testing methods on C/C composite are further studied in this thesis. and effective defect detection has been achieved. (2011) Trans Tech Publications.

The research on statistical properties of TDI-CCD imaging noise (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Gu Y.-Y.; Shen X.-H.; He G.-X.

收藏 | 浏览/下载：23/0 | 提交时间：2013/03/25

TDI-CCD can improve the sensitivity of space camera without any degradation of spatial resolution which is widely used in aerospace imaging devices. The article describes the basic working principle and application characteristics of TDI-CCD devices analyses the composition of TDI-CCD imaging noise and propose a new method to analyze TDI-CCD imaging noise with statistical probability distribution. In order to estimate the distribution of gray values affect by noise we introduced the concept of skewness and kurtosis. We design an experiment using constant illumination light source take image with TDI-CCD working at different stage such as stage 16 stage 32 stage 48 stage 64 and stage 96 analyse the characteristics of image noise with the method we proposed experimental results show that the gray values approximately meet normal distribution in large sample cases. 2011 SPIE.

The lightweight design of the inner framework of the opto-electronic stabilization platform based on finite element analysis (EI CONFERENCE) 会议论文 OAI收割
2011 IEEE 18th International Conference on Industrial Engineering and Engineering Management, IE and EM 2011, September 3, 2011 - September 5, 2011, Changchun, China
Zou Q.; Ma H.-L.; Hu Y.; Ding J.-W.

收藏 | 浏览/下载：28/0 | 提交时间：2013/03/25

The airborne opto-electronic stabilization platform should have the characteristics of high requirements for stability tracking accuracy and lightweight. In order to verify the rationality of the main load-bearing structure the inner-gimbal finite element analysis was performed. Because of the poor working conditions of the airborne opto-electronic stabilization platform and the wide range of working temperature variation -45 C 60 C according to the actual working environment air-resistance and temperature were added to the loads of the inner-gimbal in analysis. What's more based on the analysis results lightweight design was performed to the initial model and 64.37% of mass was decreased. The remarkable effect was obtained. This research is going to be instructive to design and production of the airborne opto-electronic stabilization platform in the future. 2011 IEEE.

Design of multispectral remote sensing image compression system (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computer Application and System Modeling, ICCASM 2010, October 22, 2010 - October 24, 2010, Shanxi, Taiyuan, China
作者: Xu S.-Y.

收藏 | 浏览/下载：20/0 | 提交时间：2013/03/25

In order to get the higher compression quality of multispectral remote sensing image which taken the JPEG2000 as the standard used FPGA and special compression chip ADV212 to realize the remote sensing image compression system is proposed. The system used the specialty compression chip ADV212 which is newly relaesed by Analog Device company. It used to develop fast high-quality compression for the large amount of remote sensing image data. The system realized the image data's input the compression stream's output the image preprocessing as well as to control the ADV212 chip's working pattern through FPGA. The experiment result shows that this system which has such characteristics as low power consumption. low cost and easy adjustmen and has a good compressing effect. Meet the requirement of the multispectral remote sensing image's high compression ratio. 2010 IEEE.

Noise processing technology of a TDICCD sensor (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
作者: Zhang L.-P.

收藏 | 浏览/下载：18/0 | 提交时间：2013/03/25

In the application of TDI-CCD the other is all kinds of interference noise produced in the working process of a TDI-CCD for reset noise because of its serious noise interference such as reset noise and 1 / f noise correlated double sampling is employed. The experimental results show that after noise processing the imaging quality is reduced etc. According to the features of noise the output S/N has been raised to about 50 dB. 2010 IEEE. so that it is necessary to study the noise characteristics of TDI-CCD. There are two categories of noise this paper has studied the corresponding noise-processing technology. For dark current noise one is the inherent noise refrigeration is taken including shot noise dark current noise fixed pattern noise and transfer noise etc.

Ground-based measurement of the space object temperature (EI CONFERENCE) 会议论文 OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, April 26, 2010 - April 29, 2010, Dalian, China
作者: Wu Y.-H.; Wang J.-L.; Wang J.-L.

收藏 | 浏览/下载：71/0 | 提交时间：2013/03/25

Multi-band IR data of the space object can be used in the fields of object identification and space surveillance. The radiation characteristics of the object can be obtained by analyzing these data. These characteristics include temperature area emissivity absorptivity reflectivity and temporal trends. The infrared radiation temperature of the space object is an important characteristic from which the object's working state in orbit can be judged. We apply the method of measuring the spectral distribution of the object and fit the data to the Planck formula to determine the temperature. In order to improve the precision of measuring temperature on the space object we optimize the centric wavelength and the bandwidth effectively. Also we use a simple program to implement temperature measurement. 2010 Copyright SPIE - The International Society for Optical Engineering.