Camera-based closed-loop control for beam positioning during deep penetration welding by means of keyhole front morphology
| Autor: | Eric Eschner, Michael Schmidt, Pablo Dilger |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0209 industrial biotechnology
Materials science business.industry Image processing 02 engineering and technology Welding 010501 environmental sciences Laser 01 natural sciences law.invention 020901 industrial engineering & automation Optics law Position (vector) Control system Butt joint General Earth and Planetary Sciences business Keyhole Beam (structure) 0105 earth and related environmental sciences General Environmental Science |
| Zdroj: | Procedia CIRP. 94:758-762 |
| ISSN: | 2212-8271 |
| Popis: | Within this paper, we present a closed-loop control system for beam positioning during laser deep penetration welding of sheet metals. The system is comprised of a high-speed camera arranged coaxially to the laser beam on a welding head and linear stages for positioning of the specimen. It is shown that the keyhole front morphology correlates with the position of the seam in butt joint configuration. Within our closed-loop control prototype, this correlation is extracted by an image processing algorithm in a real-time environment. First experiments show that our system is able to adaptively correct the beam position with sufficient accuracy. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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