BASIC THEORY AND APPLICATIONS OF WELDING ARC SPECTRAL INFORMATION  

作　　者：LIJunyue XUE Haitao LI Huan SONG Yonglun 

机构地区：[1]School of Material Science and Engineering, Tianjin University, Tianjin 300072, China [2]School of Material Science and Engineering,Hebei University of Technology, Tianjin 300132, China [3]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100085, China

出　　处：《Chinese Journal of Mechanical Engineering》2007年第4期44-51,共8页中国机械工程学报（英文版）

基　　金：This project is supported by National Natural Science Foundation of China(No.59975068).

摘　　要：Welding arc spectral information is a rising welding information source. In some occasion, it can reflect many physical phenomena of welding process and solve many problems that cannot be done with arc electric information, acoustic information and other arc information. It is of important significance in developing automatic control technique of welding process and other similar process. Many years study work on welding arc spectral information of the anthor are discussed from three aspects of theory, method and application. Basic theory, view and testing methods of welding arc spectral information has been put forward. In application aspects, many applied examples, for example, monitoring of harmful gases in arc （such as hydrogen and nitrogen） with the method of welding arc spectral information; welding arc spectral imaging of the welding pool which is used in automatic seam tracking; controlling of welding droplet transfer with welding arc spectral information and so on, are introduced. Especially, the successful application in real time controlling of welding droplet transfer in pulsed GMAW is introduced too. These application examples show that the welding arc spectral information has great applied significance and development potentialities. These .content will play an important role in applying and spreading welding arc spectral informarion technology.Welding arc spectral information is a rising welding information source. In some occasion, it can reflect many physical phenomena of welding process and solve many problems that cannot be done with arc electric information, acoustic information and other arc information. It is of important significance in developing automatic control technique of welding process and other similar process. Many years study work on welding arc spectral information of the anthor are discussed from three aspects of theory, method and application. Basic theory, view and testing methods of welding arc spectral information has been put forward. In application aspects, many applied examples, for example, monitoring of harmful gases in arc （such as hydrogen and nitrogen） with the method of welding arc spectral information; welding arc spectral imaging of the welding pool which is used in automatic seam tracking; controlling of welding droplet transfer with welding arc spectral information and so on, are introduced. Especially, the successful application in real time controlling of welding droplet transfer in pulsed GMAW is introduced too. These application examples show that the welding arc spectral information has great applied significance and development potentialities. These .content will play an important role in applying and spreading welding arc spectral informarion technology.

关 键 词：WELDING ARC PLASMA Spectral information Automatic control 

分 类 号：TP1[自动化与计算机技术—控制理论与控制工程] TG4[自动化与计算机技术—控制科学与工程]