| Title:
|
Sampled weighted attraction control of distributed thermal scan welding (English) |
| Author:
|
Doumanidis, Charalabos C. |
| Language:
|
English |
| Journal:
|
Kybernetika |
| ISSN:
|
0023-5954 |
| Volume:
|
35 |
| Issue:
|
1 |
| Year:
|
1999 |
| Pages:
|
[117]-132 |
| Summary lang:
|
English |
| . |
| Category:
|
math |
| . |
| Summary:
|
This article addresses the problem of distributed-parameter control for a class of infinite-dimensional manufacturing processes with scanned thermal actuation, such as scan welding. This new process is implemented on a robotic GTAW laboratory setup with infrared pyrometry, and simulated by a flexible numerical computation program. An analytical linearized model, based on convolution of Green’s fields, is expressed in multivariable state-space form, with its time-variant parameters identified in-process. A robust controller design compensates for model uncertainty, and a sampled weighted attraction method is introduced for heat source guidance based on real-time thermal optimization of the heat input distribution. The distributed thermal regulation strategy with infrared feedback is validated both computationally and experimentally in scan welding tests. (English) |
| Keyword:
|
scan welding |
| Keyword:
|
thermal control |
| Keyword:
|
distributed parameter |
| Keyword:
|
numerical method |
| MSC:
|
80M50 |
| MSC:
|
93B51 |
| MSC:
|
93C20 |
| MSC:
|
93C95 |
| idZBL:
|
Zbl 1274.80023 |
| idMR:
|
MR1705535 |
| . |
| Date available:
|
2009-09-24T19:23:53Z |
| Last updated:
|
2015-03-27 |
| Stable URL:
|
http://hdl.handle.net/10338.dmlcz/135272 |
| . |
| Reference:
|
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| Reference:
|
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| Reference:
|
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| Reference:
|
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| Reference:
|
[5] Doumanidis C. C., Hardt D. E.: Simultaneous in–process control of heat–affected zone and cooling rate ruring arc welding.Welding Journal 69 (1990), 5, 186s–196s |
| Reference:
|
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| Reference:
|
[7] Hale M. B., Hardt D. E.: Multi–output process dynamics in GMAW: limits to control.Internat. Trends in Welding Science and Technology, ASM Gatlinburg TN, (1992), 1015–1020 |
| Reference:
|
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| Reference:
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[9] Miyachi H.: $n$–Process Control of Root-Gap Changes During Butt Welding.Dept. of Mechanical Engineering, MIT, Cambridge, MA 1989 |
| Reference:
|
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| Reference:
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| Reference:
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| . |
