Monitoring of laser welding using source localization and tracking processing by microphone array

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• 作者：Zhen Luo ; Weidong Liu ; Zhengming Wang…
• 刊名：The International Journal of Advanced Manufacturing Technology
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：86
• 期：1-4
• 页码：21-28
• 全文大小：1,421 KB
• 刊物类别：Engineering
• 刊物主题：Industrial and Production Engineering
  Production and Logistics
  Mechanical Engineering
  Computer-Aided Engineering and Design
  
• 出版者：Springer London
• ISSN：1433-3015
• 卷排序：86

文摘

Microphone is subject to the interference of working acoustic sources from surroundings. It is often difficult to acquire useful acoustic signal from the hostile environment. This problem has become the obstacle to use the acoustic signal for monitoring laser welding process. To monitor the weld quality effectively, a novel monitoring strategy on source localization and tracking of laser source is investigated in this work. A plane microphone array system composed of eight microphones has been applied to capture the acoustic signal. A time delay recognition has been employed to source localization and tracking. These results reveal that this system with the processing method is capable of distinguishing welding defects in laser welding process. By visualizing the position of laser source, it can directly judge and distinguish the weld quality.KeywordsLocalization and trackingMicrophone arrayAcoustic signalLaser weldingProcess monitoring