Vision servo control of a robotic sewing system

2003 ◽  
Author(s):  
D. Gershon ◽  
I. Porat
Keyword(s):  
Servo Control ◽  
Vision Servo

scholarly journals Vision Servo Motion Control and Error Analysis of a CoplanarXXYStage for Image Alignment Motion

2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
Hau-Wei Lee ◽  
Chien-Hung Liu
Keyword(s):  
Motion Control ◽  
Degrees Of Freedom ◽  
Servo Control ◽  
Image Alignment ◽  
Work Piece ◽  
Alignment Algorithm ◽  
Alignment System ◽  
Vision Servo ◽  
Smart Mobile ◽  
Touch Panels

In recent years, as there is demand for smart mobile phones with touch panels, the alignment/compensation system of alignment stage with vision servo control has also increased. Due to the fact that the traditional stacked-typeXYθstage has cumulative errors of assembly and it is heavy, it has been gradually replaced by the coplanar stage characterized by three actuators on the same plane with three degrees of freedom. The simplest image alignment mode uses two cameras as the equipments for feedback control, and the work piece is placed on the working stage. The work piece is usually engraved/marked. After the cameras capture images and when the position of the mark in the camera is obtained by image processing, the mark can be moved to the designated position in the camera by moving the stage and using alignment algorithm. This study used a coplanarXXYstage with 1 μm positioning resolution. Due to the fact that the resolution of the camera is about 3.75 μm per pixel, thus a subpixel technology is used, and the linear and angular alignment repeatability of the alignment system can achieve 1 μm and 5 arcsec, respectively. The visual servo motion control for alignment motion is completed within 1 second using the coplanarXXYstage.

Combined force and visual control of an industrial robot

Robotica ◽  
2004 ◽  
Vol 22 (2) ◽  
pp. 163-171 ◽  
Author(s):  
Ricardo Carelli ◽  
Eduardo Oliva ◽  
Carlos Soria ◽  
Oscar Nasisi
Keyword(s):  
Force Control ◽  
Visual Information ◽  
Visual Servoing ◽  
Force Feedback ◽  
Hybrid Control ◽  
Industrial Robot ◽  
Servo Control ◽  
Visual Servo ◽  
Control Structures ◽  
Vision Servo

This work proposes control structures that efficiently combine force control with vision servo control of robot manipulators. Impedance controllers are considered which are based both on visual servoing and on physical or fictitious force feedback, the force and visual information being combined in the image space. Force and visual servo controllers included in extended hybrid control structures are also considered. The combination of both force and vision based control allows the tasks range of the robot to be extended to partially structured environments. The proposed controllers, implemented on an industrial SCARA-type robot, are tested in tasks involving physical and virtual contact with the environment.

Micro-vision servo control of a multi-axis alignment system for optical fiber assembly

2017 ◽  
Vol 27 (4) ◽  
pp. 045010 ◽  
Author(s):  
Weihai Chen ◽  
Fei Yu ◽  
Jianliang Qu ◽  
Wenjie Chen ◽  
Jianbin Zhang
Keyword(s):  
Optical Fiber ◽  
Servo Control ◽  
Fiber Assembly ◽  
Alignment System ◽  
Axis Alignment ◽  
Vision Servo

Intelligent supervision of servo control

1993 ◽  
Vol 140 (6) ◽  
pp. 405 ◽  
Author(s):  
M.H. Perng ◽  
H.H. Chang
Keyword(s):  
Servo Control

Nanoscale Servo Control for Galvano Scanner Using Final-State Control

2009 ◽  
Vol 129 (9) ◽  
pp. 938-944 ◽  
Author(s):  
Mitsuo Hirata ◽  
Takahiro Kidokoro ◽  
Shinji Ueda
Keyword(s):  
Servo Control ◽  
State Control ◽  
Final State

New Efficient PMSM Drive by Optimal Servo Control

2014 ◽  
Vol 134 (11) ◽  
pp. 978-979
Author(s):  
Ryu Hosooka ◽  
Shinji Shinnaka
Keyword(s):  
Servo Control

Navigation Function Based Visual Servo Control

2004 ◽  
Author(s):  
J. Chen ◽  
D. M. Dason ◽  
W. E. Dixon ◽  
V. K. Chitrakaran
Keyword(s):  
Servo Control ◽  
Visual Servo ◽  
Visual Servo Control ◽  
Navigation Function

scholarly journals ESO-Based Double Closed-loop Servo Control for Automobile Electronic Throttle

2018 ◽  
Vol 51 (31) ◽  
pp. 979-983 ◽  
Author(s):  
Jiaqi Xue ◽  
Xiaohong Jiao ◽  
Zitao Sun
Keyword(s):  
Closed Loop ◽  
Servo Control ◽  
Electronic Throttle ◽  
Automobile Electronic
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