20.500.12556/RUL-164435 Krmiljenje laserskega varjenja bakra z izvenosno postavljeno kamero Control of copper laser welding with an off axis camera Z razvojem e-mobilnosti varjenje bakra pridobiva na pomenu kot raziskovalno področje, saj je baker pomemben gradnik električnih podsistemov, kot so baterije in močnostna elektronika. Lasersko varjenje bakra predstavlja velik izziv zaradi visoke reflektivnosti ter temperaturno odvisnih materialnih karakteristik. V delu razvijemo sistem za krmiljenje širine laserskega varjenja bakra s 3 kW vlakenskim laserjem. Sistem deluje na osnovi optične povratne zanke, v kateri s kamero sledimo zvaru in merimo širino prevaritve. Na podlagi izmerjene in željene širine prevaritve PID krmilnik prilagaja moč varjenja. Izdelali smo štiri krmilnike in preizkusili kombinirano uporabo različnih krmilnikov hkrati. Rezultati so pokazali, da lahko z optično povratno zanko krmilimo širino varjenja s standardno deviacijo med 2 % in 10 %. Najhitrejšo spremembo širine varjenja smo doegli z uporabo usmerjenega PID krmilnika, ki je za spremembo širine potreboval 0,02 s. Sistem omogoča hitrejšo nastavitev procesa, boljši nadzor nad procesom in kvalitetnejše varjenje glede na konvencionalne sisteme laserskega varjenja bakra. With the development of e-mobility, copper welding is gaining importance as a research field, since copper is a key component of electrical subsystems such as batteries and power electronics. Laser welding of copper presents a significant challenge due to its high reflectivity and temperature-dependent material characteristics. In this work, we develop a system for controlling the width of laser welding of copper using a 3 kW fiber laser. The system operates on the basis of an optical feedback loop, where a camera monitors the weld and measures the width of the welding zone. Based on the measured and desired weld width, a PID controller adjusts the welding power. We developed four controllers and tested the combined use of different controllers simultaneously. The results showed that the optical feedback loop can control the welding width with a standard deviation between 2 % and 10 %. The fastest change in welding width was achieved using a feed-forward PID controller, which required 0.02 seconds to adjust the width. The system enables faster process setup, better process control, and higher-quality welding compared to conventional copper laser welding systems. lasersko varjenje krmiljenje procesa nadzor s kamero baker vlakenski laser laser welding process control camera monitoring copper fiber laser true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2024-10-25 08:31:23 2024-10-25 08:31:27 2024-12-18 13:27:55 0000-00-00 00:00:00 2024 0 0 XXII, 61 str. 2024 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.791.725:62-519:669(043.2) 267011 219706627 38276.pdf 38276.pdf 1 4D7FA97BA24EFEE416F32315CAF3AF2D 3ce7a1fcb2ce0446af651cd1eaaf56b471f619af7c580096bd5db3accd3bca0e 7704f67f-929a-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=194806 Fakulteta za strojništvo 0 0 0