{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,6]],"date-time":"2026-01-06T04:52:32Z","timestamp":1767675152149,"version":"3.41.2"},"reference-count":25,"publisher":"Emerald","issue":"1","license":[{"start":{"date-parts":[[2010,1,12]],"date-time":"2010-01-12T00:00:00Z","timestamp":1263254400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.emerald.com\/insight\/site-policies"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2010,1,12]]},"abstract":"<jats:sec><jats:title content-type=\"abstract-heading\">Purpose<\/jats:title><jats:p>Quality control of arc welding process is the key component in robotic welding system. The purpose of this paper is to address vision\u2010sensing technology and model\u2010free adaptive control (MFC) of weld pool size during automatic arc welding system.<\/jats:p><\/jats:sec><jats:sec><jats:title content-type=\"abstract-heading\">Design\/methodology\/approach<\/jats:title><jats:p>The shape and size parameters for the weld pool are used to describe the weld pool geometry, which is specified by the backside weld width. The welding current and wire\u2010feeding speed are selected as the control variable, and the backside width of weld pool is selected as the controlled variable. To achieve the goal of full penetration and fine weld seam formation, a multiple input single output (MISO) MFC is designed for control of the backside pool width.<\/jats:p><\/jats:sec><jats:sec><jats:title content-type=\"abstract-heading\">Findings<\/jats:title><jats:p>The research findings show that it is feasible to develop such a MISO MFC of weld pool size, which is independent on mathematic model of weld pool dynamics. And the control algorithm is simple to use and has a minimal computational burden.<\/jats:p><\/jats:sec><jats:sec><jats:title content-type=\"abstract-heading\">Research limitations\/implications<\/jats:title><jats:p>This is a work in progress. The controlled process results are mainly influenced by the period of competing control algorithm and image processing, which could be improved by the hardware and enhancing computation speed. The closed\u2010loop control is a two inputs\u2010one output system. Thus, the means by which the multiple input multiple output (MIMO) control method is applied to weld pool dynamics is work for the future.<\/jats:p><\/jats:sec><jats:sec><jats:title content-type=\"abstract-heading\">Practical implications<\/jats:title><jats:p>The control system is applicable to automatic gas tungsten arc welding (GTAW).<\/jats:p><\/jats:sec><jats:sec><jats:title content-type=\"abstract-heading\">Originality\/value<\/jats:title><jats:p>The MISO MFC has been set up for automatic GTAW to overcome the nonlinear and uncertainty of GTAW process, in which two welding parameters can be adjusted simultaneously. In addition, this controller is independent on welding pool dynamic model.<\/jats:p><\/jats:sec>","DOI":"10.1108\/01439911011009993","type":"journal-article","created":{"date-parts":[[2010,1,8]],"date-time":"2010-01-08T08:04:37Z","timestamp":1262937877000},"page":"89-96","source":"Crossref","is-referenced-by-count":16,"title":["A novel control algorithm for weld pool control"],"prefix":"10.1108","volume":"37","author":[{"given":"Fenglin","family":"L\u00fc","sequence":"first","affiliation":[]},{"given":"Huabin","family":"Chen","sequence":"additional","affiliation":[]},{"given":"Chongjian","family":"Fan","sequence":"additional","affiliation":[]},{"given":"Shanben","family":"Chen","sequence":"additional","affiliation":[]}],"member":"140","reference":[{"key":"key2022031520202080400_b1","doi-asserted-by":"crossref","unstructured":"Bui, T.H., Chung, T.L., Kim, S.B. and Nguyen, T.T. 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