Multi-sensor information fusion for monitoring disk laser welding

Gao, Xiangdong; Sun, Yan; You, Deyong; Zhenlin, Xiao; Chen, Xiaohui

doi:10.1007/s00170-015-8032-z

Cited by 23 publications

(3 citation statements)

References 13 publications

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“…(2) System model The motion law of the data source [7] is given by a state equation, which represents the transition relationship between the state at the two moments before and after. Assuming that the target is moving approximately at a constant speed on a two-dimensional plane, then this vector is:…”

Section: Information Fusion Technologymentioning

confidence: 99%

The Strategy of Information Fusion Technology to Improve Micro-course Design and Online Education in the Context of Smart Education

2021

IJECMR

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Micro-course design and online education are new education models that have emerged in recent years. Both are based on the emergence and development of Internet of Things, big data, cloud computing and other network technologies. Because of its flexible teaching format, it has gradually received people's favor. The purpose of this article is to study how to use information fusion technology to improve the design of micro-courses and online education in the context of smart education, and to promote the development of education. This article first introduces the background of the emergence and development of smart education, then studies and analyzes the characteristics of micro-course design and online education, and finally designs a method of combining information technology with the Internet. And in the comparison experiment between the improved fusion algorithm and the traditional one, the accuracy rate of the improved fusion algorithm is as high as 90%-95%, which is a very obvious improvement over the traditional 85%-92%. Education has a very effective promotion.

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Section: Information Fusion Technologymentioning

confidence: 99%

The Strategy of Information Fusion Technology to Improve Micro-course Design and Online Education in the Context of Smart Education

2021

IJECMR

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“…The use of multiple sensors via sensor fusion and machine learning has also been attempted to monitor welding conditions and quality. Gao et al [394] tried to monitor the disk laser welding process using the integration of photodiode and visual sensing. Such efforts to monitor welding process conditions are continuing.…”

Section: -16 / Vol 142 November 2020mentioning

confidence: 99%

Overview of Laser Applications in Manufacturing and Materials Processing in Recent Years

Shin

Lei

et al. 2020

Journal of Manufacturing Science and Engineering

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Recent years have witnessed a rapid growth of the laser market. Figure 1 shows the recent revenues of laser sales with about 50% increase in revenue over recent four years , which far exceeds the growth of other industrial sectors. More than one third of this revenue belongs to the category of laser materials processing arena. Undoubtedly, lasers have been playing increasingly important roles in various industrial manufacturing sectors. This article is to capture some of important developments in the rapidly growing areas of laser-based manufacturing and materials processing and also describe important technological issues pertaining to various laser-based manufacturing processes. The topics to be covered in this paper include more popularly used processes in industry such as laser additive manufacturing, laser-assisted machining, laser micromachining, laser forming, laser surface texturing, laser welding, and laser shock peening, although there are several additional areas of laser applications. In each section, a brief overview of the process is provided, followed by critical issues in implementing the process, such as properties, predictive modeling, and process monitoring, and finally some remarks on future issues that can guide researchers and practitioners.

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“…This paper describes a method using sensor fusion [11] to combine data from a dual mode sensor system to obtain a better result than what would be possible if the sensing modes were used separately. The use of multi-sensor and sensor fusion strategies to monitor and control the LBW process has been presented in several publications, e.g., [12][13][14][15][16][17], however to the authors' knowledge not for joint gap width estimation and filler wire feed rate control. In this work, a dual mode sensing system, based on a single camera, LED illumination, and a laser line projection, is proposed for estimation of the joint gap width.…”

Section: Introductionmentioning

confidence: 99%

Adaptive control of the filler wire rate during laser beam welding of squared butt joints with varying gap width

Nilsen

Sikström

Christiansson

2019

Int J Adv Manuf Technol

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Adding filler wire control to autogenous laser beam welding of squared butt joints offers a means to widen up the tight fit-up tolerances associated with this process. When the gap width varies, the filler wire rate should be controlled to assure a constant geometry of the resulting weld seam. A dual mode sensing system is proposed to estimate the joint gap width and thereby control the filler wire rate. A vision camera integrated into the welding tool together with external LED illumination and a laser line projection enables two sensing modes, one surface feature extraction mode and one laser triangulation-based mode. Data from the both modes are fused in a Kalman filter, and comparisons show that the fusing of the data gives more robust estimation than estimates from each single mode. A feed-forward control system adaptively adjusts the filler wire rate based on the estimations of the joint gap width in front of the keyhole. The focus is on keeping the data processing simple and affordable, and the real-time performance of the sensor and control system has been evaluated by welding experiments. It is shown that the proposed system can be used for on-line control of the filler wire rate to achieve a constant weld geometry during varying joint gap widths.

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Multi-sensor information fusion for monitoring disk laser welding

Cited by 23 publications

References 13 publications

The Strategy of Information Fusion Technology to Improve Micro-course Design and Online Education in the Context of Smart Education

The Strategy of Information Fusion Technology to Improve Micro-course Design and Online Education in the Context of Smart Education

Overview of Laser Applications in Manufacturing and Materials Processing in Recent Years

Adaptive control of the filler wire rate during laser beam welding of squared butt joints with varying gap width

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