中国科学院机构知识库网格系统: 检索

A combined supporting system based on foamed concrete and U-shaped steel for underground coal mine roadways undergoing large deformations 期刊论文 OAI收割
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2017, 卷号: 68, 页码: 196-210
作者: Tian, Hongming; Tan, Xianjun; Chen, Weizhong; Liu, Hongyuan; Chan, Andrew Hin Cheong

|

收藏 | 浏览/下载：39/0 | 提交时间：2018/06/05

Surrounding rock Combined supporting,system U-shaped steel Foamed concrete

密闭生保系统中基于盐回收的纳滤膜技术及膜污染防治 学位论文 OAI收割
博士后, 北京: 中国科学院研究生院, 2016
作者: 王健行

收藏 | 浏览/下载：100/0 | 提交时间：2017/07/19

密闭生保系统，尿液，纳滤，盐回收，膜污染 Closed life supporting system,Urine, Nanofiltration(NF), Salt recycling,Membrane fouling

Application of a combined support system to the weak floor reinforcement in deep underground coal mine 期刊论文 OAI收割
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, 2014, 卷号: 71, 页码: 143-150
作者: Kang, Yongshui; Liu, Quansheng; Gong, Guangqing; Wang, Huaichao

|

收藏 | 浏览/下载：20/0 | 提交时间：2018/06/05

Grouting cable Full length anchor Supporting system Floor heave

Accuracy synthesis of a 3-RPS parallel robot based on manufacturing costs (EI CONFERENCE) 会议论文 OAI收割
31st Chinese Control Conference, CCC 2012, July 25, 2012 - July 27, 2012, Hefei, China
Yao T.-K.; Xi Z.; Feng Z.; Zhang L.-M.; Yong W.

收藏 | 浏览/下载：30/0 | 提交时间：2013/03/25

Pose accuracy is an important issue for parallel robot being used as mirror supporting system of telescope. One challenging topic is the accuracy synthesis which deals with the optimal design of the manufacturing and assembling tolerances of each component under the given pose accuracy. First the error model of the 3-RPS parallel robot is built based on total derivation of the kinematic equations. And the error variable of each spherical or rotate joint can be expressed as a single boundary error parameter but not three independent position parameters. Then the accuracy synthesis model is formulated taking the manufacturing costs as the optimization objective and the accuracy requirements as the constraint condition. Finally the genetic algorithm is used to solve the optimization problem and a simulation example is given. The results show that the accuracy synthesis method based on manufacturing costs can satisfy the need of pose accuracy and is better for engineering application than the method based on error sensitivity. 2012 Chinese Assoc of Automati.

Quantification of spatial difference of sustainability in the Taihang Mountain area of Hebei Province, China, with its information platform and GIS SCI/SSCI论文 OAI收割
2011
Tan L. M.; Liu H. T.; Ma Y. C.; Wu L. H.; Min Q. W.; Gao S. H.; Liu J. T.

收藏 | 浏览/下载：29/0 | 提交时间：2012/06/08

Heterogeneity information system decision supporting system sustainable development assessment Taihang Mountain area of Hebei Province forest management systems

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：21/0 | 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.

MMS protocol analysis and implementation base on embedding GSM/ GPRS wireless communication module (EI CONFERENCE) 会议论文 OAI收割
2009 International Conference on Information Technology and Computer Science, ITCS 2009, July 25, 2009 - July 26, 2009, Kiev, Ukraine
Yuan Y.-P.

收藏 | 浏览/下载：18/0 | 提交时间：2013/03/25

The Multimedia Messaging Service(MMS) system mainly focus on supporting multimedia function by the GPRS channel transfer video file photo audio file text file and so on. Based on this function the implementation of the image communication between wireless modules between wireless module and mobile phone between wireless module and computer became true. This paper describe the MMS system framework based on the embedded GSM/GPRS wireless modules MMS system protocol and the software implementation of the MMS protocol. 2009 IEEE.

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：26/0 | 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.

The wind-induced vibration control of feed supporting system for large spherical radio telescope using electrorheological damper 期刊论文 OAI收割
MECHATRONICS, 2003, 卷号: 13, 期号: 2, 页码: 95-110
作者: Su, YX; Duan, BY; Wei, Q; Nan, RD; Peng, B

收藏 | 浏览/下载：22/0 | 提交时间：2017/06/28

mechatronics electrorheological fluid damper large spherical radio telescope feed supporting system wind-induced vibration additional damping control of vibration

Development of a pilot of an Arecibo-type large spherical radio telescope for the square kilometre array 期刊论文 OAI收割
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE, 2001, 卷号: 215, 期号: 11, 页码: 1321-1329
作者: Su, YX; Duan, BY; Nan, RD; Peng, B

收藏 | 浏览/下载：23/0 | 提交时间：2017/06/28

mechatronics square kilometre array robotics feed-supporting system parallel manipulator kinematics accuracy analysis static equilibrium