Magneto-optical imaging deviation model of micro-gap weld joint

Gao, Xiangdong; Huang, Guanxiong; You, Deyong; Lan, Chongzhou; Zhang, Nanfeng

doi:10.1016/j.jmsy.2016.11.005

Cited by 22 publications

(2 citation statements)

References 15 publications

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“…Points 𝑝 𝑠1 and 𝑝 𝑠4 are the key point of the V-butt joints, and their image coordinates can be solved by the intersection of the lines 𝐿 1 and 𝐿 2 , 𝐿 3 and 𝐿 4 , respectively. According to the image coordinates, the 3D coordinates of the weld position in the camera coordinate system (CCS) can be solved by equation (9). The coordinate values of the weld position in the robot coordinate system (RCS) are often used to guide the robot motion.…”

Section: Fig 6 the Image Processing Process Of This Proposed Image De...mentioning

confidence: 99%

A vibration-resistant detection method of position and gap for seam tracking of Z-weave GMAW

Gao,

Hong,

Jia

et al. 2024

Preprint

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Aiming at the failure problem of automatic weave weld tracking of V-butt welds with gaps due to arc light, molten metal splash, seam gap variations, and inertial vibration of the weave motion in the manufacture of weave gas metal arc welding for pipelines vessels and ships, a vibration-resistant detection method of position and gap based on laser vision sensing was proposed. In this method, an improved random sampling consistency algorithm and an adaptive grayscale centroid algorithm are proposed to overcome the interference of arc light and molten metal splash to achieve the simultaneous image detection of weld position and gap, as well as a moving polynomial fitting algorithm was proposed to overcome the interference of vibration at the direction of weave motion and to further correct the weld position. Finally, the experimental results of Z-weave welding seam tracking of S-curve welds show that the proposed method is effective and can significantly reduce the weld tracking error, which meets the requirements of practical welding. This study provides a novel solution for eliminating the vibration interference of system device in practical weave welding manufacture.

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Section: Fig 6 the Image Processing Process Of This Proposed Image De...mentioning

confidence: 99%

A vibration-resistant detection method of position and gap for seam tracking of Z-weave GMAW

Gao,

Hong,

Jia

et al. 2024

Preprint

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show abstract

“…And it is used to get the image or location information about the welding work pieces. During the much research work, the common sensors include arc sensors [4]- [6], ultrasonic sensors [7], magneto-optical sensors [8], [9], infrared sensors [10], vision sensors [11]- [13]. Compared…”

Section: Introductionmentioning

confidence: 99%

A Novel 3D Seam Extraction Method Based on Multi-Functional Sensor for V-Type Weld Seam

Yang

Liu

2019

IEEE Access

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To meet the current flexible modern manufacturing mode, based on the idea from coarse to fine, a novel three-dimensional(3D) seam extraction algorithm is proposed in this paper which includes the global rough extraction and the local fine positioning. Firstly, a multi-functional vision system based on Digital Light Processing(DLP) projector is designed to adapt different 3D measurement tasks. Secondly, a global sensor based on DLP projector is constructed which is used to acquire the whole weld seam. Meanwhile, a new feature extraction algorithm based on 3D information of work pieces is proposed. Thirdly, a line structured light sensor based on DLP projector is to serve as local sensor. Based on the results of rough extraction, the close-range laser scanning is to improve the measurement precision. Finally, the 3D path model and pose estimation of weld seam are done which could be applied into the 3D path teaching of welding robots. The experiments show that the proposed algorithm could well finish the high-precision 3D seam path planning through the ''Global-Local'' method.

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A vibration-resistant detection method of weld position and gap for seam tracking of Z-weave GMAW

Gao,

Hong,

Jia

et al. 2024

Int J Adv Manuf Technol

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Magneto-optical imaging deviation model of micro-gap weld joint

Cited by 22 publications

References 15 publications

A vibration-resistant detection method of position and gap for seam tracking of Z-weave GMAW

A vibration-resistant detection method of position and gap for seam tracking of Z-weave GMAW

A Novel 3D Seam Extraction Method Based on Multi-Functional Sensor for V-Type Weld Seam

A vibration-resistant detection method of weld position and gap for seam tracking of Z-weave GMAW

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