Abstract:
This paper proposes a method of seam tracking monitoring during high-power fiber laser welding. A visual sensor system was employed to capture the infrared images of molt...Show MoreMetadata
Abstract:
This paper proposes a method of seam tracking monitoring during high-power fiber laser welding. A visual sensor system was employed to capture the infrared images of molten pools and the surroundings in the laser welding process. A weld seam position variable was extracted by the image difference and centroid algorithms. The state and measurement equations for weld seam position were established based on an eigenvector derived from the weld seam position variable. A Sage-Husa adaptive Kalman filter (AKF), as an estimator of the noise statistical characteristics, was applied in order to enhance the filtering precision. By embedding an Elman neural network into the AKF, an error estimator was used to compensate for the filtering errors. The results of the welding experiments have demonstrated the effectiveness of the proposed method to improve the accuracy of weld detection.
Published in: IEEE Transactions on Industrial Electronics ( Volume: 59, Issue: 11, November 2012)

Department of Mechanical and Electrical Engineering, Guangdong University of Technology, Guangzhou, China
Xiangdong Gao received the B.E. degree in automation from Zhengzhou University, Zhengzhou, China, in 1985, the M.A. degree in automation from Central South University, Changsha, China, in 1988, and the Ph.D. degree in welding from South China University of Technology, Guangzhou, China, in 1998.
He is currently a Professor in the Department of Mechanical and Electrical Engineering, Guangdong University of Technology, Guangz...Show More
Xiangdong Gao received the B.E. degree in automation from Zhengzhou University, Zhengzhou, China, in 1985, the M.A. degree in automation from Central South University, Changsha, China, in 1988, and the Ph.D. degree in welding from South China University of Technology, Guangzhou, China, in 1998.
He is currently a Professor in the Department of Mechanical and Electrical Engineering, Guangdong University of Technology, Guangz...View more

Department of Mechanical and Electrical Engineering, Guangdong University of Technology, Guangzhou, China
Deyong You received the B.E. and M.A. degrees in mechanical engineering from Guangdong University of Technology, Guangzhou, China, in 2006 and 2010, respectively, where he is currently working toward the Ph.D. degree in the Department of Mechanical and Electrical Engineering.
His research interests are machine vision and welding automation.
Deyong You received the B.E. and M.A. degrees in mechanical engineering from Guangdong University of Technology, Guangzhou, China, in 2006 and 2010, respectively, where he is currently working toward the Ph.D. degree in the Department of Mechanical and Electrical Engineering.
His research interests are machine vision and welding automation.View more

Department of Laser Welding and Materials Processing, Joining and Welding Research Institute, Osaka University, Osaka, Japan
Seiji Katayama received the M.A. and Ph.D. degrees in welding engineering from Osaka University, Osaka, Japan, in 1975 and 1981, respectively.
He is currently a Professor in the Department of Laser Welding and Materials Processing, Joining and Welding Research Institute, Osaka University. His research interests are laser welding and materials processing.
Dr. Katayama is a member of the Laser Institute of America and the Jap...Show More
Seiji Katayama received the M.A. and Ph.D. degrees in welding engineering from Osaka University, Osaka, Japan, in 1975 and 1981, respectively.
He is currently a Professor in the Department of Laser Welding and Materials Processing, Joining and Welding Research Institute, Osaka University. His research interests are laser welding and materials processing.
Dr. Katayama is a member of the Laser Institute of America and the Jap...View more

Department of Mechanical and Electrical Engineering, Guangdong University of Technology, Guangzhou, China
Xiangdong Gao received the B.E. degree in automation from Zhengzhou University, Zhengzhou, China, in 1985, the M.A. degree in automation from Central South University, Changsha, China, in 1988, and the Ph.D. degree in welding from South China University of Technology, Guangzhou, China, in 1998.
He is currently a Professor in the Department of Mechanical and Electrical Engineering, Guangdong University of Technology, Guangzhou. His research interests are machine vision and welding automation.
Xiangdong Gao received the B.E. degree in automation from Zhengzhou University, Zhengzhou, China, in 1985, the M.A. degree in automation from Central South University, Changsha, China, in 1988, and the Ph.D. degree in welding from South China University of Technology, Guangzhou, China, in 1998.
He is currently a Professor in the Department of Mechanical and Electrical Engineering, Guangdong University of Technology, Guangzhou. His research interests are machine vision and welding automation.View more

Department of Mechanical and Electrical Engineering, Guangdong University of Technology, Guangzhou, China
Deyong You received the B.E. and M.A. degrees in mechanical engineering from Guangdong University of Technology, Guangzhou, China, in 2006 and 2010, respectively, where he is currently working toward the Ph.D. degree in the Department of Mechanical and Electrical Engineering.
His research interests are machine vision and welding automation.
Deyong You received the B.E. and M.A. degrees in mechanical engineering from Guangdong University of Technology, Guangzhou, China, in 2006 and 2010, respectively, where he is currently working toward the Ph.D. degree in the Department of Mechanical and Electrical Engineering.
His research interests are machine vision and welding automation.View more

Department of Laser Welding and Materials Processing, Joining and Welding Research Institute, Osaka University, Osaka, Japan
Seiji Katayama received the M.A. and Ph.D. degrees in welding engineering from Osaka University, Osaka, Japan, in 1975 and 1981, respectively.
He is currently a Professor in the Department of Laser Welding and Materials Processing, Joining and Welding Research Institute, Osaka University. His research interests are laser welding and materials processing.
Dr. Katayama is a member of the Laser Institute of America and the Japan Laser Processing Society (JLPS). He is currently the President of JLPS and a Japanese delegate of Commission IV in the International Institute of Welding.
Seiji Katayama received the M.A. and Ph.D. degrees in welding engineering from Osaka University, Osaka, Japan, in 1975 and 1981, respectively.
He is currently a Professor in the Department of Laser Welding and Materials Processing, Joining and Welding Research Institute, Osaka University. His research interests are laser welding and materials processing.
Dr. Katayama is a member of the Laser Institute of America and the Japan Laser Processing Society (JLPS). He is currently the President of JLPS and a Japanese delegate of Commission IV in the International Institute of Welding.View more