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XIAO Xinyuan, SHI Yonghua, WANG Guorong, Li Hexi. Robotic underwater weld seam tracking based on visual sensor[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2009, (1): 33-36.
Citation: XIAO Xinyuan, SHI Yonghua, WANG Guorong, Li Hexi. Robotic underwater weld seam tracking based on visual sensor[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2009, (1): 33-36.
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Robotic underwater weld seam tracking based on visual sensor

  • School of Mechanical Engineering, South China University of Technology, Guangzhou 510641, China

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  • Received Date: May 27, 2008
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  • According to the special requirements of underwater automatic welding under environment of vision, a robotic underwater visual weld seam tracking system is developed.As underwater weld seam images are serious interference and fuzzy, wavelet transform technology is used to remove arc、splashing interference noise. An improved fuzzy enhancement image processing algorithm is adopted to improve the efficiency of image processing and obtain clear edge image.The weld seam center is picked up accurately by scanning the weld seam's left and right feature points after edge detection.In order to reduce tracking error, the coordinates offset of each small segment in weld track is divided into fifty parts, at the same time, an effective robot tracking control program is presented.The tracking experiment of sidelong, S-shape weld seam line showed that it can satisfy tracking demand under normal conditions.
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