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	Sludge Rising and Critical Time Prediction for Denitrification in Secondary Clarifiers: Experimental and Computational Fluid Dynamics Studies 期刊论文 OAI收割 ENVIRONMENTAL ENGINEERING SCIENCE, 2021, 页码: 9 作者: Fan, Long; Xiao, Yao; Liu, Qiao; Xu, Nong; Dong, Qiang \| 收藏 \| 浏览/下载：39/0 \| 提交时间：2021/08/31 computational fluid dynamics (CFD) critical time denitrification lighter sludge sludge rising
	Search for a lighter Higgs boson in the Next-to-Minimal Supersymmetric Standard Model 期刊论文 OAI收割 CHINESE PHYSICS C, 2018, 卷号: 42, 期号: 10, 页码: 103107 作者: Chen GM(陈国明) \| 收藏 \| 浏览/下载：157/0 \| 提交时间：2019/09/24 Next-to-Minimal Supersymmetric Standard Model lighter Higgs boson discovery potentials
	Design of the real-time autofocusing system for collimator with long focus length and large aperture (EI CONFERENCE) 会议论文 OAI收割 2011 International Academic Conference on Numbers, Intelligence, Manufacturing Technology and Machinery Automation, MAMT 2011, December 24, 2011 - December 25, 2011, Wuhan, China 作者: Zhang X.; Zhang X.; Zhang X. 收藏 \| 浏览/下载：44/0 \| 提交时间：2013/03/25 Large aperture collimator which has been widely used for calibrating and testing various optical devices plays an essential role in correlative laboratories. As being the basic testing and calibration equipment the large aperture collimator's accuracy should be much higher than the device under testing in order to ensure the accuracy of the measurement. However the process of adjusting the collimator is extremely complicated due to the collimator's large aperture and long focal length. So it is difficult to ensure the measurement's quality and easy to cause the system being vulnerable to the surrounding environment. One of the most common problems is defocus. In order to solve the problem above this issue presents a new type of autocollimator autofocusing system which uses pentaprism instead of using large-aperture plane mirror semiconductor lasers as light source and CCD sensor as receiver. The system is smaller lighter and more convenient when using. The computer simulation shows that the autofocusing system's resolution could reach the accuracy of 40m. If we use the relevant algorithms to execute the sub-pixel scanning the resolution could reach the accuracy of 10m. It shows that the system could satisfy the required testing precision of testing large aperture optical device.
	Miniaturize photoelectric stable platform (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 Xue W.-Q.; Wang Y.-Y.; Dai M. 收藏 \| 浏览/下载：81/0 \| 提交时间：2013/03/25 In order to reduce the size and weight of the gimbal in a traditional stable platform and correct the disadvantage in size of the payload the paper first improves the gimbal which is an important component of a stable photoelectric platform that also is an important factor in affecting the size and weight of a stability platform. In this paper a closed-form solution of 3-DOF manipulator is designed according mechanical arm design principles. This manipulator is formed by a three joint axes whose extended line is intersected at one point. A standard orthogonal coordinate system is set up for each rod in the manipulator. And then rotation transformation matrix expression is obtained. At last in this paper the manipulator arm-shaped method for solving solutions is description and also each parameter of the gimbal is calculated when the photoelectric detection devices at bottom reach the expected position. Test results show that the photoelectric stability platform with gimbal we designed is smaller lighter and simpler than that traditional. Also the packaging and size of the photoelectric will not be affected with this open structure. 2010 IEEE.
	Optimal design of strap-down inertial navigation support under random loads (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: Li M. 收藏 \| 浏览/下载：30/0 \| 提交时间：2013/03/25 In order to realize miniaturization and light weight of the strap-down inertial navigation system and then to make sure that it works well under random loads optimal design is applied to the strap-down inertial navigation support with the methods of topology optimization and size optimization. Firstly based on the installation requirement of devices and connection requirement of the support and the carrier the initial structure of the support is designed. Topology optimization with FEA software ANSYS is adopted on the initial structure to get the basic one. Then 5 critical sizes are chosen as design variables and the support structure is optimized by means of size optimization to reach light weight with satisfying the requirement of dynamic stiffness. Finally random vibration analysis is applied to the initial structure. In the mean time random vibration test is carried out to qualify the analysis method. After the qualification a random vibration analysis is applied to the optimized support structure to get the rms of displacement response and acceleration response of the support to validate whether the optimized structure is appropriate. The results indicate that the dynamic stiffness of the optimized support structure satisfies the design requirements and its weight is lighter 49.38% than that of the initial one. This research can be a reference to the structure design of supports under random loads and the result has been applied to the development and manufacture of a prototype aerocraft. 2010 IEEE.
	Compound telescope (EI CONFERENCE) 会议论文 OAI收割 Novel Optical Systems Design and Optimization IX, August 15, 2006 - August 16, 2006, San Diego, CA, United states 作者: Liu H.; Liu H.; Sun Q.; Li F.; Liu H. 收藏 \| 浏览/下载：26/0 \| 提交时间：2013/03/25 Compound telescope is a new type of space optical system. It uses the concept of compound eyes and the property of diffractive lens. With the help of diffractive lens the diffractive optical system could become lighter weight lower cost and looser tolerance. And with the help of compound-eye configuration the field of view is expanded. A design example of compound diffractive optical system is given. It is composed of many diffractive telescope of F/4 200mm aperture 0.1 degrees field of view. It is shown that the whole system can approximately attain the diffraction limit over wide field of view.