Real-Time Monitoring and Control of Ultra-Fast Laser Engraving Process Utilizing Spectrometer

被引：3
|
作者：
Ruutiainen, Mika [1 ]
Roozbahani, Hamid [1 ]
Alizadeh, Marjan [1 ]
Handroos, Heikki [1 ]
Salminen, Antti [2 ]
机构：
[1] Lappeenranta Lahti Univ Technol, Dept Mech Engn, Lappeenranta 53851, Finland
[2] Univ Turku, Dept Mech Engn, Turku 20014, Finland
来源：
IEEE ACCESS | 2022年 / 10卷
关键词：
Power lasers; Lasers; Real-time systems; Process control; Measurement by laser beam; Laser beam cutting; Fiber lasers; Laser scribing; real-time monitoring; real-time control; spectrometer; ultrafast laser; VISION; SYSTEM;
D O I：
10.1109/ACCESS.2022.3156280
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The objective of this study was to develop a novel real-time monitoring and control method for ultra-fast laser scribing processes utilizing spectrometer. Adjustment of laser process parameters such as laser power with high precision in real-time is critical in the laser engraving process due to the premium quality and speed requirements of the process. An online monitoring system was established using the Ocean Optics spectrometer, IPG ytterbium pulsed laser, and PXIe-8880 industrial computer. An algorithm for real-time control of the laser scribing process was developed based on the monitoring outcomes using LabVIEWCIRCLED LATIN CAPITAL LETTER R software. Experimental methods were performed to evaluate the reliability of the developed monitoring system and control algorithm. The sensitivity of the spectrometer was assessed by changing laser power, pulse length, and focal point position. A workpiece consisting of two different metals, including stainless steel SS304L and steel S355, was used to evaluate the performance of the developed algorithm when scribing moved from one material to another. Instant accurate setting of the laser power based on the variations in intensities of metals from 750 AU to 1400 AU validated the reliability of the algorithm.
引用
收藏
页码：27113 / 27120
页数：8
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