中国科学院机构知识库网格系统: 检索

Study on supporting time of tunnel lining in thin-layered rock mass 期刊论文 OAI收割
IOP Conference Series: Earth and Environmental Science, 2021, 卷号: 861, 期号: 4
作者: Chen,Dongfang; Li,Chaoxiang; Su,Guoshao; Xu,Dingping; Yan,Zhigang

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收藏 | 浏览/下载：49/0 | 提交时间：2022/01/05

Layered rock mass Soft rock Large deformation Supporting time Lining structure

Optimized design for the supporting structure of a large aperture mirror 会议论文 OAI收割
Beijing, China, 2020-11-30
作者: Rui, Wang Jia; Tao, Yang Hong

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收藏 | 浏览/下载：56/0 | 提交时间：2020/12/29

Supporting structure Surface accuracy Topology optimization Lightweight

Real-Time Monitoring of the Position and Orientation of a Radio Telescope Sub-Reflector with Fiber Bragg Grating Sensors 期刊论文 OAI收割
SENSORS, 2019, 卷号: 19, 期号: 3, 页码: 619
作者: Zhao, Yong; Bao, Hong; Xu, Qian; Du, Jingli

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收藏 | 浏览/下载：79/0 | 提交时间：2019/04/23

environmental loads sub-reflector shift supporting structure inverse finite element method FBG strain sensors

Athermalization for the supporting structure of space camera primary and secondary mirrors 会议论文 OAI收割
Xian, PEOPLES R CHINA, DEC 05-08, 2018
作者: Lin, S. M.; Wang, H.; Liu, Y.; Xue, Y. K.; Xiang, B. B.

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收藏 | 浏览/下载：58/0 | 提交时间：2019/12/18

primary and secondary mirrors space camera supporting structure athermalization stray light suppression

Dynamic Active Earth Pressures of the Retaining Piles with Anchors under Vehicle Loads 期刊论文 OAI收割
SHOCK AND VIBRATION, 2016, 卷号: 2016, 页码: DOI:10.1155/2016/4023827
作者: Qiu, Hong-zhi; Kong, Ji-ming; Wang, Ren-chao

收藏 | 浏览/下载：37/0 | 提交时间：2016/01/11

earth pressure pile-anchor supporting structure vehicle loads pseudo-dynamic approach

Optimization analysis for radial support by finite elements method (EI CONFERENCE) 会议论文 OAI收割
2012 International Conference on Intelligent System and Applied Material, GSAM 2012, January 13, 2012 - January 15, 2012, Taiyuan, Shanxi, China
作者: Wang Y.; Wang Y.; Wang Y.; Li C.; Wang Y.

收藏 | 浏览/下载：24/0 | 提交时间：2013/03/25

Primary mirror' surface figure is affected by supporting structure obviously. Especially for large-aperture telescope the surface figure is significant because of primary mirror' self-weight. For the requirement of the usage it's necessary to minimize the surface figure from self-weight by reasonable supporting scheme. The text optimized support point and force of radial support to minimize the surface figure by finite-element software. At the same time it studied the relationship between support point and counterweight to reduce the weight of support structure. At last it gave the optimal solution. (2012) Trans Tech Publications.

Design and optimization of supporting structure for scanning mirror in aviation remote sensor (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
作者: Yang H.

收藏 | 浏览/下载：30/0 | 提交时间：2013/03/25

An optical supporting structure is studied to improve its structure stiffness and reduce the rotate error to meet the requirement of aviation remote sensor. A formula to calculate fundamental frequency is proposed using Rayleigh-Ritz method and a method of is analyzed. By means of OPTISTRUCT software the maximum fundamental frequency is converted to object function the deformation under the gravity and the mass are assigned to state variable wall thicknesses of the structure are converted to design variables. The analysis and test results indicate that the fundamental frequency of designed optical supporting structure has been improved 37.2 Hz from 96.9 Hz which guarantee the reliability of the sweep mechanism and the rotate error is 4.89 which is satisfied for the rotate accuracy in plunge angle. The method of optimization has a certain instructional significance for the design of supporting structures in aviation remote sensor. 2011 IEEE.

Dynamic calculation model and seismic response for frame supporting structure with prestressed anchors 期刊论文 iSwitch采集
SCIENCE CHINA-TECHNOLOGICAL SCIENCES, 2010, 卷号: 53, 期号: 7, 页码: 1957-1966
作者: Dong JianHua; Zhu YanPeng; Zhou Yong; Ma Wei

收藏 | 浏览/下载：40/0 | 提交时间：2019/10/08

frame supporting structure with prestressed anchor slope dynamic calculation model seismic performance seismic design

Study on dynamic imaging on TDI CCD optical remote sensor of push-broom technology (EI CONFERENCE) 会议论文 OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China
作者: Liu L.; Ren J.-Y.; Liu L.; Gao M.-H.

收藏 | 浏览/下载：22/0 | 提交时间：2013/03/25

A set special detecting system is proposed based on TDICCD push-broom technology applying in dynamic imaging detecting experiment of space optics remote sensor. In the system In the course of detecting push-broom movement of the satellite is simulated through using double supporting U structure precision rotary platform with remote sensor by angular speed 0.555/s regard Nyquist frequency target as detecting aim within the range of 5 and control precision on steady speed achieves 0.3% in order to solve matching uncertainty between the CCD pixel and the vertical target strip image when the remote sensor does push-broom make matching simplify enhance the measurement result the accuracy. So the tolerance a/n arithmetic progression gap target strip is joined in each group of rectangular vertical group target strip. The remote sensor obtains in vertical the level and 45 the direction 0 fields of view 0.86 the field of view Nyquist frequency target strip image after detected a group target strip which can precision matching to TDICCD pixel at least can be obtained through analysis and dealing with 0.86 field of view's target strip image. The experiment not only verifies the detecting system's feasibility but simultaneously verifies whether to have the high quality dynamic imaging quality when TDICCD push-broom technology is adopted on the remote sensor developed. 2010 Copyright SPIE - The International Society for Optical Engineering.

Research on the support structure of the primary mirror of large-aperture telescope (EI CONFERENCE) 会议论文 OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Large Mirrors and Telescopes, July 8, 2007 - July 12, 2007, Chengdu, China
Yang W.; Jingxu Z.

收藏 | 浏览/下载：28/0 | 提交时间：2013/03/25

Large-aperture telescope can be used in surveying battlefield researching landform searching object real-time monitoring imaging detecting and identifying spatial targets and so on. A large-aperture telescope for achieving high resolution power is designed to monitor spatial target and image in real time. Real-time monitoring plays an important role in military conflicts. The orbit parameter of object quantity geometrical shape parameter and so on can be obtained by detect spatial target. With the development of optical technology people require larger aperture in optics-electronic (OE) system. By increasing optical aperture the ability of collecting light and resolution power in the system can be enhanced. But the support structure of the primary mirror of large-aperture telescope will be a very difficult problem. With the increase of primary mirror aperture the weight of the primary mirror will become larger than before. The root mean square (rms) of the primary mirror is affected by many factors such as deadweight deformation of heat environment and so on. Due to the primary mirror of telescope is an important component of telescope system. By reducing the weight of primary mirror precision of the system is ensured. During the designing phase one can consider the supporting project of the primary mirror synthetically and analyze it roundly according to technical requirement of optical system and the effect factors. The final structural design can be reasonable. In an astronomical telescope the surface of reflector is an important part for collecting dark radiation of celestial bodies. Its surface shape will have an effect on collecting efficiency of telescope radiant energy directly. So the rms must be very high. Optical system of large aperture small wavelength and small focus can receive maximal light intensity. For ground-based optical astronomical telescope the design proposed in the paper can satisfy the requirement of the possible minimum atmosphere seeing at astronomical observatory site and exert the use efficiency of the telescope adequately. So the accuracy of the traditional surface of reflector can assure that 90% of all the light energy can be focused on within the angle diameter range of the minimum atmosphere seeing then 100% of light energy should be focused on the angle diameter range of minimum atmosphere seeing. Because the rms of mirror is very high precise surface machining and accurate the support of mirror are very important tasks during designing and manufacturing the telescope. In the paper various support techniques of a large-aperture telescope primary mirror are discussed and a 3.5 meter telescope system at the Starfire Optical Range (SOR) overviewed simply which was operated by the Directed Energy Directorate of the Air Force Research Laboratory Kirtland AFB NM USA from the ground-based O-E system for the observations of spatial target. We also analyze Theoretical elastic deformation of the Steward Observatory 2.3 meter mirror is analyzed.