{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,2]],"date-time":"2025-08-02T17:23:37Z","timestamp":1754155417622,"version":"3.41.2"},"reference-count":15,"publisher":"Emerald","issue":"6","license":[{"start":{"date-parts":[[2019,8,28]],"date-time":"2019-08-28T00:00:00Z","timestamp":1566950400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.emerald.com\/insight\/site-policies"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IR"],"published-print":{"date-parts":[[2019,11,14]]},"abstract":"<jats:sec>\n<jats:title content-type=\"abstract-subheading\">Purpose<\/jats:title>\n<jats:p>Geometric structure error of parabolic trough concentrator (PTC) frame affects the installation accuracy of mirrors and absorber tubes and thus decreases the solar energy concentrating efficiency. Until now, there is no effective method to instruct the assembly and regulation of PTC frames. This paper aims to propose a vision guided method for fast and accurate regulation of mirror and absorber supports to improve the geometric quality of PTC frames.<\/jats:p>\n<\/jats:sec>\n<jats:sec>\n<jats:title content-type=\"abstract-subheading\">Design\/methodology\/approach<\/jats:title>\n<jats:p>The PTC frame support regulating system consists of a general-purpose online photogrammetry system, frame support measurement adaptors and data analyzing software. First, the positions and angles of all the supports are measured in real time by the online photogrammetric system. Then, the measured positions and angles are aligned to the design reference frame through the transformation calculated by an absorber position constrained nonlinear optimization so as to get the geometric errors and regulating amounts. Finally, a graduated pseudo-color-based visualization method is proposed to assist the manual or automated regulation of PTC frame supports in site.<\/jats:p>\n<\/jats:sec>\n<jats:sec>\n<jats:title content-type=\"abstract-subheading\">Findings<\/jats:title>\n<jats:p>The proposed method does not need to construct a reference system nor specify the rotation attitude of the PTC frame, and it is capable of conducting efficient and accurate regulation on PTC frame assembly line. The method is applied to manual regulation of a light type PTC frame structure. After regulation, the maximum position and angle errors of supports are reduced to less than 0.15\u2009mm and 0.15\u00b0 respectively and the intercept factor is increased to 97%, which meets the requirement for a qualified PTC concentrator.<\/jats:p>\n<\/jats:sec>\n<jats:sec>\n<jats:title content-type=\"abstract-subheading\">Originality\/value<\/jats:title>\n<jats:p>To the authors\u2019 knowledge, this paper is the first to propose a vision guided assembly or regulation method for PTC frame structures. The research uses online photogrammetry system to provide real-time geometric quality information feedback, elaborates the data analysis algorithm and provides the visualization method for accurate and efficient in site regulation. Furthermore, this paper also provides theories, methods and experiences for other applications that use vision guidance for attitude regulation and digital flexible assembly of large equipment.<\/jats:p>\n<\/jats:sec>","DOI":"10.1108\/ir-05-2018-0105","type":"journal-article","created":{"date-parts":[[2019,8,28]],"date-time":"2019-08-28T04:08:26Z","timestamp":1566965306000},"page":"733-739","source":"Crossref","is-referenced-by-count":0,"title":["Vision guided geometric regulation of PTC frame structures"],"prefix":"10.1108","volume":"46","author":[{"given":"Peng","family":"Sun","sequence":"first","affiliation":[]},{"given":"Naiguang","family":"Lu","sequence":"additional","affiliation":[]},{"given":"Mingli","family":"Dong","sequence":"additional","affiliation":[]},{"given":"Xiaoping","family":"Lou","sequence":"additional","affiliation":[]},{"given":"Zexiang","family":"Tan","sequence":"additional","affiliation":[]}],"member":"140","published-online":{"date-parts":[[2019,8,28]]},"reference":[{"issue":"8","key":"key2022112510141715100_ref001","doi-asserted-by":"crossref","first-page":"2407","DOI":"10.1016\/j.engstruct.2011.04.015","article-title":"Photogrammetric measurements of RC bridge column deformations","volume":"33","year":"2011","journal-title":"Engineering Structures"},{"key":"key2022112510141715100_ref002","doi-asserted-by":"crossref","first-page":"284","DOI":"10.1016\/j.ymssp.2015.03.021","article-title":"Full-field dynamic strain prediction on a wind turbine using displacements of optical targets measured by stereo photogrammetry","volume":"62\/63","year":"2015","journal-title":"Mechanical Systems and Signal Processing"},{"issue":"6","key":"key2022112510141715100_ref003","doi-asserted-by":"crossref","first-page":"656","DOI":"10.1061\/(ASCE)0733-9399(2007)133:6(656)","article-title":"Flexible videogrammetric technique for three-dimensional structural vibration measurement","volume":"133","year":"2007","journal-title":"Journal of Engineering Mechanics"},{"issue":"7","key":"key2022112510141715100_ref004","doi-asserted-by":"crossref","first-page":"1695","DOI":"10.1016\/j.rser.2010.03.012","article-title":"Parabolic-trough solar collectors and their applications","volume":"14","year":"2010","journal-title":"Renewable and Sustainable Energy Reviews"},{"first-page":"1","article-title":"EUROTROUGH-Parabolic trough collector developed for cost efficient solar power generation","year":"2002","key":"key2022112510141715100_ref005"},{"issue":"3","key":"key2022112510141715100_ref006","doi-asserted-by":"crossref","first-page":"297","DOI":"10.1016\/j.isprsjprs.2008.10.006","article-title":"An image engineering system for the inspection of transparent construction materials","volume":"64","year":"2009","journal-title":"Isprs Journal of Photogrammetry and Remote Sensing"},{"key":"key2022112510141715100_ref007","doi-asserted-by":"crossref","first-page":"87","DOI":"10.1016\/j.measurement.2014.11.023","article-title":"Videogrammetric technique for three-dimensional structural progressive collapse measurement","volume":"63","year":"2015","journal-title":"Measurement"},{"issue":"6","key":"key2022112510141715100_ref008","doi-asserted-by":"crossref","first-page":"558","DOI":"10.1016\/j.isprsjprs.2010.06.003","article-title":"Close range photogrammetry for industrial applications","volume":"65","year":"2010","journal-title":"Isprs Journal of Photogrammetry and Remote Sensing"},{"issue":"3","key":"key2022112510141715100_ref009","first-page":"032210","article-title":"Validation of two optical measurement methods for the qualification of the shape accuracy of mirror panels for concentrating solar systems","volume":"133","year":"2011","journal-title":"Journal of Solar Energy Engineering"},{"key":"key2022112510141715100_ref010","first-page":"1","article-title":"A novel measurement technique for the alignment of satellite reflectors and feeds: from subsystem to spacecraft and up to final RF testing","volume-title":"2011 Indian Antenna Week. 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