Details
| Original language | English |
|---|---|
| Title of host publication | Proceedings of SPIE |
| Subtitle of host publication | The International Society for Optical Engineering |
| Pages | 109-117 |
| Number of pages | 9 |
| Publication status | Published - 1995 |
| Externally published | Yes |
| Event | Beam Control, Diagnostics, Standards, and Propagation - San Jose, CA, USA Duration: 6 Feb 1995 → 7 Feb 1995 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Volume | 2375 |
| ISSN (Print) | 0277-786X |
Abstract
To obtain on-line information about the different processes in laser machining like cutting, welding and material removal, optical sensors are integrated in the working head of a high power CO2 laser machining system. In order to detect the dynamic light or plasma intensity fluctuation during machining, these sensors provide the real-time signal of the vapor or plasma flame intensity in the wavelength spectrum of 200 nm to 1100 nm. Moreover, the real-time intensity of the laser power is measured in real-time with a pyroelectrical sensor. The aim is to analyze each process. With the knowledge of the specific characteristics of the process, a closed-loop control is set up. Distinguishing between continuous and pulsed processes, different control algorithms have been developed and tested. Thus, a control system based on micro-controller hardware and its theoretical background for failure detection and closed loop control is explained.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
- Computer Science(all)
- Computer Science Applications
- Mathematics(all)
- Applied Mathematics
- Engineering(all)
- Electrical and Electronic Engineering
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
Proceedings of SPIE: The International Society for Optical Engineering. 1995. p. 109-117 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 2375).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Closed-loop control of material processing with high-power CO2 lasers
AU - Toenshoff, Hans K.
AU - Overmeyer, Ludger
AU - von Alvensleben, Ferdinand
PY - 1995
Y1 - 1995
N2 - To obtain on-line information about the different processes in laser machining like cutting, welding and material removal, optical sensors are integrated in the working head of a high power CO2 laser machining system. In order to detect the dynamic light or plasma intensity fluctuation during machining, these sensors provide the real-time signal of the vapor or plasma flame intensity in the wavelength spectrum of 200 nm to 1100 nm. Moreover, the real-time intensity of the laser power is measured in real-time with a pyroelectrical sensor. The aim is to analyze each process. With the knowledge of the specific characteristics of the process, a closed-loop control is set up. Distinguishing between continuous and pulsed processes, different control algorithms have been developed and tested. Thus, a control system based on micro-controller hardware and its theoretical background for failure detection and closed loop control is explained.
AB - To obtain on-line information about the different processes in laser machining like cutting, welding and material removal, optical sensors are integrated in the working head of a high power CO2 laser machining system. In order to detect the dynamic light or plasma intensity fluctuation during machining, these sensors provide the real-time signal of the vapor or plasma flame intensity in the wavelength spectrum of 200 nm to 1100 nm. Moreover, the real-time intensity of the laser power is measured in real-time with a pyroelectrical sensor. The aim is to analyze each process. With the knowledge of the specific characteristics of the process, a closed-loop control is set up. Distinguishing between continuous and pulsed processes, different control algorithms have been developed and tested. Thus, a control system based on micro-controller hardware and its theoretical background for failure detection and closed loop control is explained.
UR - http://www.scopus.com/inward/record.url?scp=0029237973&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0029237973
SN - 081941722X
T3 - Proceedings of SPIE - The International Society for Optical Engineering
SP - 109
EP - 117
BT - Proceedings of SPIE
T2 - Beam Control, Diagnostics, Standards, and Propagation
Y2 - 6 February 1995 through 7 February 1995
ER -