Closed Loop Control of Penetration Depth during CO2 Laser Lap Welding Processes
| Autor: | Antonio Ancona, Bert Huis in 't Veld, Francesco P. Mezzapesa, Pietro Mario Lugarà, Domenico Rizzi, Ronald G.K.M. Aarts, A.R. Konuk, Teresa Sibillano |
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| Přispěvatelé: | Faculty of Engineering Technology |
| Rok vydání: | 2012 |
| Předmět: |
0209 industrial biotechnology
Materials science 02 engineering and technology Welding 01 natural sciences Biochemistry Article Analytical Chemistry law.invention 010309 optics 020901 industrial engineering & automation Control theory law 0103 physical sciences Laser power scaling Electrical and Electronic Engineering Penetration depth Instrumentation Laser beam welding Plasma laser welding plasma spectroscopy closed loop control Laser Atomic and Molecular Physics and Optics METIS-288460 IR-81839 Electron temperature Keyhole |
| Zdroj: | Sensors (Basel) 12 (2012): 11077–11090. doi:10.3390/s120811077 info:cnr-pdr/source/autori:Sibillano T., Rizzi D., Mezzapesa F.P., Lugarà P.M., Konuk A.R, Aarts R., Huis in't Veld B., Ancona A./titolo:Closed loop control of penetration depth during CO2 laser lap welding processes/doi:10.3390%2Fs120811077/rivista:Sensors (Basel)/anno:2012/pagina_da:11077/pagina_a:11090/intervallo_pagine:11077–11090/volume:12 Sensors (Basel, Switzerland) Sensors (Switzerland), 12(8):ID: sensors-18601, 11077-11090. MDPI Sensors; Volume 12; Issue 8; Pages: 11077-11090 |
| ISSN: | 1424-8220 |
| DOI: | 10.3390/s120811077 |
| Popis: | In this paper we describe a novel spectroscopic closed loop control system capable of stabilizing the penetration depth during laser welding processes by controlling the laser power. Our novel approach is to analyze the optical emission from the laser generated plasma plume above the keyhole, to calculate its electron temperature as a process-monitoring signal. Laser power has been controlled by using a quantitative relationship between the penetration depth and the plasma electron temperature. The sensor is able to correlate in real time the difference between the measured electron temperature and its reference value for the requested penetration depth. Accordingly the closed loop system adjusts the power, thus maintaining the penetration depth. |
| Databáze: | OpenAIRE |
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