{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,3]],"date-time":"2025-11-03T09:12:00Z","timestamp":1762161120315,"version":"3.41.2"},"reference-count":17,"publisher":"Emerald","issue":"1","license":[{"start":{"date-parts":[[2015,1,19]],"date-time":"2015-01-19T00:00:00Z","timestamp":1421625600000},"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":[[2015,1,19]]},"abstract":"\n Purpose<\/jats:title>\n \u2013 The purpose of this paper is to propose a more efficient strategy, which is easier to implement, i.e. the engineer can directly operate the target object without the robot to do a demonstration, and the manipulator is regulated to track the trajectory using vision feedback repetitively. Generally, the applications of industrial robotic manipulators are based on teaching playback strategy, i.e. the engineer should directly operate the manipulator to perform a demonstration and then the manipulator uses the recorded driving signals to perform repetitive tasks. <\/jats:p>\n <\/jats:sec>\n \n Design\/methodology\/approach<\/jats:title>\n \u2013 In the teaching process, the engineer grasps the object with a camera on it to do a demonstration, during which a series of images are recorded. The desired trajectory is defined by the homography between the images captured at current and final poses. Tracking error is directly defined by the homography matrix, without 3D reconstruction. Model-free feedback-assisted iterative learning control strategy is used for repetitive tracking, where feed-forward control signal is generated by iterative learning control strategy and feedback control signal is generated by direct feedback control. <\/jats:p>\n <\/jats:sec>\n \n Findings<\/jats:title>\n \u2013 The proposed framework is able to perform precise trajectory tracking by iterative learning, and is model-free so that the singularity problem is avoided which often occurs in conventional Jacobean-based visual servo systems. Besides, the framework is robust to image noise, which is shown in simulations and experiments. <\/jats:p>\n <\/jats:sec>\n \n Originality\/value<\/jats:title>\n \u2013 The proposed framework is model-free, so that it is more flexible for industrial use and easier to implement. Satisfactory tracking performance can be achieved in the presence of image noise. System convergence is analyzed and experiments are provided for evaluation.<\/jats:p>\n <\/jats:sec>","DOI":"10.1108\/ir-09-2014-0392","type":"journal-article","created":{"date-parts":[[2015,1,14]],"date-time":"2015-01-14T04:57:11Z","timestamp":1421211431000},"page":"54-63","source":"Crossref","is-referenced-by-count":24,"title":["Visual trajectory tracking of industrial manipulator with iterative learning control"],"prefix":"10.1108","volume":"42","author":[{"given":"Bingxi","family":"Jia","sequence":"first","affiliation":[]},{"given":"Shan","family":"Liu","sequence":"additional","affiliation":[]},{"given":"Yi","family":"Liu","sequence":"additional","affiliation":[]}],"member":"140","reference":[{"key":"key2020122702402808700_b1","unstructured":"Agarwal, A.\n , \n Jawahar, C.V.\n and \n Narayanan, P.J.\n (2005), \u201cA survey of planar homography estimation techniques\u201d, IIIT Technical Report IIIT\/TR\/2005\/12, International Institute of Information Technology, Deemed University, Hyderabad."},{"key":"key2020122702402808700_b2","doi-asserted-by":"crossref","unstructured":"Becerra, H.M.\n , \n L\u00f3pez-Nicol\u00e1s, G.\n and \n Sagues, C.\n (2011), \u201cA sliding-mode-control law for mobile robots based on epipolar visual servoing from three views\u201d, \n IEEE Transactions on Robotics\n , Vol. 27 No. 1, pp. 175-183.","DOI":"10.1109\/TRO.2010.2091750"},{"key":"key2020122702402808700_b3","doi-asserted-by":"crossref","unstructured":"Benhimane, S.\n and \n Malis, E.\n (2007), \u201cHomography-based 2d visual tracking and servoing\u201d, \n The International Journal of Robotics Research\n , Vol. 26 No. 7, pp. 661-676.","DOI":"10.1177\/0278364907080252"},{"key":"key2020122702402808700_b4","doi-asserted-by":"crossref","unstructured":"Chaumette, F.\n (1998), \u201cPotential problems of stability and convergence in image-based and position-based visual servoing\u201d, \n The Confluence of Vision and Control\n , Springer, London, pp. 66-78.","DOI":"10.1007\/BFb0109663"},{"key":"key2020122702402808700_b5","doi-asserted-by":"crossref","unstructured":"Chaumette, F.\n and \n Hutchinson, S.\n (2006), \u201cVisual servo control. 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