Geodesic
Sampled weighted attraction control of distributed thermal scan welding
Kybernetika, Tome 35 (1999) no. 1, pp. 117-132 Cet article a éte moissonné depuis la source Czech Digital Mathematics Library

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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.
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.
Classification : 80M50, 93B51, 93C20, 93C95
Keywords: scan welding; thermal control; distributed parameter; numerical method 
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     journal = {Kybernetika},
     pages = {117--132},
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     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1999_35_1_a10/}
}
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Doumanidis, Charalabos C. Sampled weighted attraction control of distributed thermal scan welding. Kybernetika, Tome 35 (1999) no. 1, pp. 117-132. http://geodesic.mathdoc.fr/item/KYB_1999_35_1_a10/

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