A study on development of inductive sensor for automatic weld seam tracking

Bae, Kyung‐Yeol; Park, Jin‐Hyun

doi:10.1016/j.jmatprotec.2006.02.020

Cited by 44 publications

(9 citation statements)

References 4 publications

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“…The circle seams of the mouth and bottom of the mug is the intersection of the plane and the sphere. Therefore, from (8) and (13), the parameters of the circle seams can be computed.…”

Section: Circle Seam Detection Based On Lsf and Visual Pointsmentioning

confidence: 99%

“…To make the welding robots adapt to the position difference of the seams from the robot teaching stage, seam tracking systems have been added to the robots. Several kinds of sensors have been used in the robotic seam tracking systems, such as through-the-arc sensors [7], inductive sensors [8], ultrasonic sensors [9] and vision sensors [10][11][12][13][14][15]. Among these sensors, vision sensors attract the attention of the researchers in the robotics field recently due to their non-contact measurement, rich information and high precision.…”

Section: Introductionmentioning

confidence: 99%

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A Vision-Based Robotic Laser Welding System for Insulated Mugs with Fuzzy Seam Tracking Control

Fang

Weng²,

Zhang

et al. 2019

Symmetry

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The symmetrical insulated mug is composed of two layers. The two ends of the two layers form the mouth and bottom seams of the insulated mug. The weld quality of the two seams is very important to keep the vacuum degree of the air between the two layers, which is vital for the heat-insulating property of the mug. Due to the narrow seam, laser welding is used. Since laser welding has high demand on the relative position of the seam and the laser torch, a vision-based seam tracking system is designed. Before welding is started, the vision sensor scans the seam and feature sample points are collected. A reconstruction algorithm is proposed to form the image containing the seam. Then, a least square fitting (LSF) method combined with random sample consensus (RANSAC) method is proposed to detect the smooth seam from the sample points. In the welding process, a seam tracking system with fuzzy logic control method is presented to keep the torch precisely on the seam. Finally, full experiments are conducted in the welding factory of the insulated mugs to verify the effectiveness of the proposed system and method.

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“…The circle seams of the mouth and bottom of the mug is the intersection of the plane and the sphere. Therefore, from (8) and (13), the parameters of the circle seams can be computed.…”

Section: Circle Seam Detection Based On Lsf and Visual Pointsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Vision-Based Robotic Laser Welding System for Insulated Mugs with Fuzzy Seam Tracking Control

Fang

Weng²,

Zhang

et al. 2019

Symmetry

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show abstract

“…From the Gauss's Law for magnetism (Equation 4), which drops a term from the expression and gives Equation 5:…”

Section: Structure and Functionality Of Inductive Sensorsmentioning

confidence: 99%

Test Apparatus for On-line Butt-Welding Evaluation of Aluminum Layer in PEX-AL-PEX Multilayer Pipes

Riahi

Ebrahimi

2013

Exp Techniques

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Considering the advantages of multilayer pipes over metal and single layer ones as well as their new and increasing application in construction industry, testing these pipes has come into consideration to guarantee the quality of the pipes, and, consequently, prolong their life and increase the quality of building. A most prominent factor in multilayer pipes is the longitudinal seam-weld. If the aluminum layer is applied without welding, it may not affect the pipe's strength. The welding normally employed involves butt or overlap using laser, ultrasonic, or tungsten inert gas (TIG) techniques. A defect-free weld can play a significant role in the pipe's strength. Thus, a defect-free weld on the aluminum layer is a major factor in guaranteeing pipe's quality. In this article, an apparatus for on-line testing of aluminum layer seam weld in multilayer pipes is presented which functions via an inductive proximity sensor. Finally, the results of several tests and defects detected are described.

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“…Bae developed a visual sensing for automatic gas metal arc welding (GMAW) [4]. Kang-yul Bae discussed an electromagnetic sensor consisting of one exciter and three separated (triple) detectors to track the welding path [5]. J. W. Kim designed a dual -electromagnetic sensor for seam tracking [6].…”

Section: Introductionmentioning

confidence: 99%

Weld Tracking System for the Boiler’s Membrane Wall Overlaying

Dawy¹

2019

IJIIS

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The membrane wall is one of the important parts in the boiler industry. It is a pipe-plate structure; The length of the pipe is much longer than it is outer diameter. The chemical reactions of the liquid inside the boilers lead to corrosion problem of the membrane wall. In order to protect the membrane wall from corrosion, overlaying weld should be applied. The structure of the membrane wall has low stiffness and can be easily deformed. Therefore, for automatic overlaying weld, a sensor is required to ensure the distance between the welding torch and the membrane wall. In this paper, a tracking contact sensor based on the potentiometer is introduced for membrane wall pipes. The proposed sensor is composed of three displacement detectors. The left and right ones detect the position deviation between the welding torch and the pipe in the left and right sides, respectively. The middle one detects the deviation between the torch and the pipe in the middle point. Hence, based on the negative feedback from the sensor, the torch position will be adjusted. Finally, the real-time tracking of the torch to the membrane wall is realized and the problem of welding position deviation due to the membrane wall deformation is determined.

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A study on development of inductive sensor for automatic weld seam tracking

Cited by 44 publications

References 4 publications

A Vision-Based Robotic Laser Welding System for Insulated Mugs with Fuzzy Seam Tracking Control

A Vision-Based Robotic Laser Welding System for Insulated Mugs with Fuzzy Seam Tracking Control

Test Apparatus for On-line Butt-Welding Evaluation of Aluminum Layer in PEX-AL-PEX Multilayer Pipes

Weld Tracking System for the Boiler’s Membrane Wall Overlaying

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