Development of closed-loop control of robotic welding processes

Purpose - The purpose of this research is to develop closed-loop control of robotic welding processes.Design methodology approach - The approach being developed is the creation of three-dimensional models of the weld pool using stereo imagining. These models will be used in a model-based feedback co...

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Veröffentlicht in:Industrial robot 2005-08, Vol.32 (4), p.350-355
Hauptverfasser: Steele, John P.H., Mnich, Chris, Debrunner, Chris, Vincent, Tyrone, Liu, Stephen
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container_end_page 355
container_issue 4
container_start_page 350
container_title Industrial robot
container_volume 32
creator Steele, John P.H.
Mnich, Chris
Debrunner, Chris
Vincent, Tyrone
Liu, Stephen
description Purpose - The purpose of this research is to develop closed-loop control of robotic welding processes.Design methodology approach - The approach being developed is the creation of three-dimensional models of the weld pool using stereo imagining. These models will be used in a model-based feedback control system. Fusion of more than one sensor type in the controller is used.Findings - Three-dimensional images can be produced from stereo images of GMAW-p weld pools. This requires coordinating the image capture with the arc pulse to allow observation of the pool.Research limitations implications - This is a work in progress. The imaging is not being done in real time at this point in time. Future work will address this issue. Also, how the image information is to be used to make corrections within the controller is future work.Practical implications - Closing the loop on GMAW welding will allow robotic automation of welding to proceed to a much broader degree of application.Originality value - This paper demonstrates that stereo imaging of out-of-position GMAW-p weld pools is possible and the useful information can be obtained from these images. It also provides insights into the analysis required within the model-based controller if one is to close the loop on the process specifically with regard to weld pool stability.
doi_str_mv 10.1108/01439910510600236
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It also provides insights into the analysis required within the model-based controller if one is to close the loop on the process specifically with regard to weld pool stability.</abstract><cop>Bradford</cop><pub>Emerald Group Publishing Limited</pub><doi>10.1108/01439910510600236</doi><tpages>6</tpages></addata></record>
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source Emerald Journals
subjects Applied sciences
Automation
Computer science
control theory
systems
Control systems
Control theory. Systems
Controllers
Exact sciences and technology
Manufacturing
Real time
Robotics
Robots
Sensors
Software
Studies
Welding
title Development of closed-loop control of robotic welding processes
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