Recent advances in automatic alignment system for the National Ignition Facility

2011 ◽  
Author(s):  
Karl Wilhelmsen ◽  
Abdul A. S. Awwal ◽  
Dan Kalantar ◽  
Richard Leach ◽  
Roger Lowe-Webb ◽  
...  
Keyword(s):  
National Ignition Facility ◽  
Recent Advances ◽  
Alignment System ◽  
Automatic Alignment

scholarly journals 2011 Status of the automatic alignment system for the National Ignition Facility

2012 ◽  
Vol 87 (12) ◽  
pp. 1989-1993 ◽  
Author(s):  
K. Wilhelmsen ◽  
A. Awwal ◽  
G. Brunton ◽  
S. Burkhart ◽  
D. McGuigan ◽  
...  
Keyword(s):  
National Ignition Facility ◽  
Alignment System ◽  
Automatic Alignment

scholarly journals Recent advances and results from the solid radiochemistry nuclear diagnostic at the National Ignition Facility

2016 ◽  
Vol 87 (11) ◽  
pp. 11D813 ◽  
Author(s):  
N. Gharibyan ◽  
D. A. Shaughnessy ◽  
K. J. Moody ◽  
P. M. Grant ◽  
J. D. Despotopulos ◽  
...  
Keyword(s):  
National Ignition Facility ◽  
Recent Advances

Design and Implementation of Automatic Alignment System for the Lidar

2009 ◽  
Vol 36 (9) ◽  
pp. 2341-2345
Author(s):  
刘小勤 Liu Xiaoqin ◽  
吴毅 Wu Yi ◽  
胡顺星 Hu Shunxin ◽  
汪建业 Wang Jianye ◽  
翁宁泉 Weng Ningquan
Keyword(s):  
Design And Implementation ◽  
Alignment System ◽  
Automatic Alignment

Design of High Power Laser Beam Automatic Alignment System

2013 ◽  
Vol 40 (10) ◽  
pp. 1002003 ◽  
Author(s):  
李红 Li Hong ◽  
王东方 Wang Dongfang ◽  
邹伟 Zou Wei ◽  
林强 Lin Qiang ◽  
张艳丽 Zhang Yanli ◽  
...  
Keyword(s):  
Laser Beam ◽  
High Power ◽  
High Power Laser ◽  
Power Laser ◽  
Alignment System ◽  
Automatic Alignment

Visual Servoing of Automatic Alignment System Using Model Predictive Control

2014 ◽  
Vol 625 ◽  
pp. 627-632
Author(s):  
Chi Ying Lin ◽  
Yu Sheng Zeng
Keyword(s):  
Model Predictive Control ◽  
Predictive Control ◽  
Visual Servoing ◽  
Optimization Problem ◽  
Rapid Development ◽  
Economic Benefits ◽  
Image Feature ◽  
Alignment System ◽  
Control Command ◽  
Automatic Alignment

Over the past few decades, vision based alignment has been accepted as an important technique to achieve higher economic benefits for precision manufacturing and measurement applications. Also referred to as visual servoing, this technique basically applies the vision feedback information and drives the moving parts to the desired target location using some appropriate control laws. Although recently rapid development of advanced image processing algorithms and hardware have made this alignment process an easier task, some fundamental issues including inevitable system constraints and singularities, still remain as a challenging research topic for further investigation. This paper aims to develop a visual servoing method for automatic alignment system using model predictive control (MPC). The reason for using this optimal control for visual servoing design is because of its capability of handling constraints such as motor and image constraints in precision alignment systems. In particular, a microassembly system for peg and hole alignment application is adopted to illustrate the design process. The goal is to perform visual tracking of two image feature points based on a XYθ motor-stage system. From the viewpoint of MPC, this is an optimization problem that minimizes feature errors under given constraints. Therefore, a dynamic model consisting of camera parameters and motion stage dynamics is first derived to build the prediction model and set up the cost function. At each sample step the control command is obtained by solving a quadratic programming optimization problem. Finally, simulation results with comparison to a conventional image based visual servoing method demonstrate the effectiveness and potential use of this method.

A New Three-Dimensional High-Accuracy Automatic Alignment System For Single-Mode Fibers

1990 ◽  
Author(s):  
Rao Yun-jiang ◽  
Huang Shang -lian ◽  
Li Ping ◽  
Wen Yu-mei ◽  
Tang Jun
Keyword(s):  
Three Dimensional ◽  
Single Mode ◽  
High Accuracy ◽  
Alignment System ◽  
Automatic Alignment

scholarly journals Automatic Alignment System in Simple Planes for Projection Mapping

2015 ◽  
Vol 19 (4) ◽  
pp. 151-154 ◽  
Author(s):  
Tomohiro Kaneda ◽  
Yasue Mitsukura ◽  
Nozomu Hamada
Keyword(s):  
Projection Mapping ◽  
Alignment System ◽  
Automatic Alignment

Fast and Accurate Laser Beam Automatic Alignment System Based on CMOS Sensor

2013 ◽  
Vol 40 (9) ◽  
pp. 0916002
Author(s):  
李耀 Li Yao ◽  
王丁 Wang Ding ◽  
郭晓杨 Guo Xiaoyang ◽  
冷雨欣 Leng Yuxin
Keyword(s):  
Laser Beam ◽  
Alignment System ◽  
Cmos Sensor ◽  
Automatic Alignment
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