Details
| Original language | English |
|---|---|
| Pages (from-to) | 1439-1447 |
| Number of pages | 9 |
| Journal | Optical and Quantum Electronics |
| Volume | 27 |
| Issue number | 12 |
| Publication status | Published - Dec 1995 |
| Externally published | Yes |
Abstract
To obtain on-line information about the cutting and welding processes, optical sensors are integrated into the working head of a high-power CO2 laser machining system. In order to detect the dynamic light or plasma intensity fluctuation during cutting and welding, these sensors provide the real-time signal of the metal vapour and plasma flame intensity in the wavelength range 200-1100nm. Simultaneously, the real-time intensity of the laser power is measured with a pyroelectric sensor. The aim is to analyse the transfer function of each process. With the knowledge of the transformation characteristics of the specific process, a closed-loop control is set up. Distinguishing between CW and pulsed processes, different control algorithms have been developed and tested. A control system based on microcontroller hardware and its theoretical background for failure detection are described.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Engineering(all)
- Electrical and Electronic Engineering
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Optical and Quantum Electronics, Vol. 27, No. 12, 12.1995, p. 1439-1447.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Process control systems in laser materials processing
AU - Tönshoff, Hans Kurt
AU - Overmeyer, Ludger
PY - 1995/12
Y1 - 1995/12
N2 - To obtain on-line information about the cutting and welding processes, optical sensors are integrated into the working head of a high-power CO2 laser machining system. In order to detect the dynamic light or plasma intensity fluctuation during cutting and welding, these sensors provide the real-time signal of the metal vapour and plasma flame intensity in the wavelength range 200-1100nm. Simultaneously, the real-time intensity of the laser power is measured with a pyroelectric sensor. The aim is to analyse the transfer function of each process. With the knowledge of the transformation characteristics of the specific process, a closed-loop control is set up. Distinguishing between CW and pulsed processes, different control algorithms have been developed and tested. A control system based on microcontroller hardware and its theoretical background for failure detection are described.
AB - To obtain on-line information about the cutting and welding processes, optical sensors are integrated into the working head of a high-power CO2 laser machining system. In order to detect the dynamic light or plasma intensity fluctuation during cutting and welding, these sensors provide the real-time signal of the metal vapour and plasma flame intensity in the wavelength range 200-1100nm. Simultaneously, the real-time intensity of the laser power is measured with a pyroelectric sensor. The aim is to analyse the transfer function of each process. With the knowledge of the transformation characteristics of the specific process, a closed-loop control is set up. Distinguishing between CW and pulsed processes, different control algorithms have been developed and tested. A control system based on microcontroller hardware and its theoretical background for failure detection are described.
UR - http://www.scopus.com/inward/record.url?scp=0029534303&partnerID=8YFLogxK
U2 - 10.1007/BF00326495
DO - 10.1007/BF00326495
M3 - Article
AN - SCOPUS:0029534303
VL - 27
SP - 1439
EP - 1447
JO - Optical and Quantum Electronics
JF - Optical and Quantum Electronics
SN - 0306-8919
IS - 12
ER -