中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共5条，第1-5条

帮助

条数/页：排序方式：
	Sub-pattern bilinear model and its application in pose estimation of work-piece 期刊论文 OAI收割 NEUROCOMPUTING, 2012, 卷号: 83, 期号: 1, 页码: 176-187 作者: Ou, Zhicai; Wang, Peng; Su, Jianhua; Qiao, Hong 收藏 \| 浏览/下载：29/0 \| 提交时间：2015/08/12 Bilinear models Sub-pattern bilinear model Pose estimation Work-piece Occlusion
	装配机器人系统的工件定位和抓取装配研究学位论文 OAI收割工学博士, 中国科学院自动化研究所: 中国科学院研究生院, 2011 作者: 赵广涛收藏 \| 浏览/下载：219/0 \| 提交时间：2015/09/02 装配机器人目标检测三维工件定位图像矩抓取点提取 Assembly robot Target recognition Work-piece location Image moment Extraction of the grasp point
	The removal function of edge effect and amending with dwell time function (EI CONFERENCE) 会议论文 OAI收割 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, April 26, 2010 - April 29, 2010, Dalian, China 作者: Luo X.; Zhang F.; Zhang F.; Wang X.-K.; Zheng L.-G. 收藏 \| 浏览/下载：45/0 \| 提交时间：2013/03/25 Computer Controlled Optical Surfacing (CCOS) is widely used for making optical aspheric mirrors. In the practical fabrication edge effect is an important problem which restricts the fabrication efficiency and accuracy seriously. In this paper the edge effect is solved by working out the edge removal function and compensate with dwell time function. Skin Model is used to describe the pressure distribution when the tool hangs over the work-piece. The calculation model of edge removal function is derived from Skin Model theoretically. A removal function experiment is completed. The difference between the theoretical model and the experiment results is less than 5%. It means that the calculation model is suit for the practical fabrication. Than the dwell time is solved with edge effect compensation by matrix-based algorithm. In the end actual experiment was done to validate the edge effect compensation method. 2010 Copyright SPIE - The International Society for Optical Engineering.
	Key techniques of laser direct writing of fine lines on the spherical surface (EI CONFERENCE) 会议论文 OAI收割 ICO20: Optical Design and Fabrication, August 21, 2005 - August 26, 2005, Changchun, China Liang F.; Hu J. 收藏 \| 浏览/下载：47/0 \| 提交时间：2013/03/25 The main principles of laser direct writing (LDW) system for lines on the spherical surface (SS) are discussed. It is pointed out that line profile is determined by the exposure dose distribution which lies on the light intensity distribution of focus plane and the scanning speed. To improve the quality of line profile on the SS several key techniques as follows are introduced. Firstly the unique system configuration four axes mutually intersecting at the center of the SS is adopted which ensures the shape of the focus be maintained circular during the writing period. Secondly an automatic focus system (AFS) with the function of automatic focus in a certain range is introduced. Thirdly to guarantee the linear velocity to accord with the exposure character of the photoresist all the time an efficient arithmetic that controls motors run at appropriate angular velocity in different latitude is developed. Finally to achieve a stable and well-behaved system so as to compensate the velocity instability resulting from unavoidable errors of mechanical and electronics factor a powerful programmable multi-axis controller (PMAC) is utilized as the kernel element of the servocontrol system and the curves of step response and parabolic response achieved by feedforward and PID loop tuning indicate that the location precision and velocity stability have reached a high level. The experimental results of LDW of lines on the SS work piece with a diameter 30 mm and a radius equal to 100 mm are given. The section analysis of the lines on the photoresist by the atomic force microscope (AFM) after exposure and development is performed. The results show that line width is about 3.0 m and the steep sides of the lines are parallel to each other.
	Hydromechanical deep-drawing of aluminum parabolic workpieces - experiments and numerical simulation 期刊论文 OAI收割 International Journal of Machine Tools & Manufacture, 2000, 卷号: 40, 期号: 10, 页码: 1479-1492 S. H. Zhang; L. H. Lang; D. C. Kang; J. Danckert; K. B. Nielsen 收藏 \| 浏览/下载：25/0 \| 提交时间：2012/04/14 hydromechanical deep-drawing bulging chamber pressure aluminum parabolic work piece explicit finite element