{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,21]],"date-time":"2026-04-21T15:02:37Z","timestamp":1776783757211,"version":"3.51.2"},"reference-count":60,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2022,5,21]],"date-time":"2022-05-21T00:00:00Z","timestamp":1653091200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the Research Council of Lithuania (LMTLT)","award":["P-LLT-21-6"],"award-info":[{"award-number":["P-LLT-21-6"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Recent industrial robotics covers a broad part of the manufacturing spectrum and other human everyday life applications; the performance of these devices has become increasingly important. Positioning accuracy and repeatability, as well as operating speed, are essential in any industrial robotics application. Robot positioning errors are complex due to the extensive combination of their sources and cannot be compensated for using conventional methods. Some robot positioning errors can be compensated for only using machine learning (ML) procedures. Reinforced machine learning increases the robot\u2019s positioning accuracy and expands its implementation capabilities. The provided methodology presents an easy and focused approach for industrial in situ robot position adjustment in real-time during production setup or readjustment cases. The scientific value of this approach is a methodology using an ML procedure without huge external datasets for the procedure and extensive computing facilities. This paper presents a deep q-learning algorithm applied to improve the positioning accuracy of an articulated KUKA youBot robot during operation. A significant improvement of the positioning accuracy was achieved approximately after 260 iterations in the online mode and initial simulation of the ML procedure.<\/jats:p>","DOI":"10.3390\/s22103911","type":"journal-article","created":{"date-parts":[[2022,5,21]],"date-time":"2022-05-21T09:18:08Z","timestamp":1653124688000},"page":"3911","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":32,"title":["Deep Q-Learning in Robotics: Improvement of Accuracy and Repeatability"],"prefix":"10.3390","volume":"22","author":[{"given":"Marius","family":"Sumanas","sequence":"first","affiliation":[{"name":"Department of Mechatronics, Robotics and Digital Manufacturing, Vilnius Gediminas Technical University, 10223 Vilnius, Lithuania"}]},{"given":"Algirdas","family":"Petronis","sequence":"additional","affiliation":[{"name":"Department of Mechatronics, Robotics and Digital Manufacturing, Vilnius Gediminas Technical University, 10223 Vilnius, Lithuania"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2458-7243","authenticated-orcid":false,"given":"Vytautas","family":"Bucinskas","sequence":"additional","affiliation":[{"name":"Department of Mechatronics, Robotics and Digital Manufacturing, Vilnius Gediminas Technical University, 10223 Vilnius, Lithuania"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0665-8829","authenticated-orcid":false,"given":"Andrius","family":"Dzedzickis","sequence":"additional","affiliation":[{"name":"Department of Mechatronics, Robotics and Digital Manufacturing, Vilnius Gediminas Technical University, 10223 Vilnius, Lithuania"}]},{"given":"Darius","family":"Virzonis","sequence":"additional","affiliation":[{"name":"Department of Mechatronics, Robotics and Digital Manufacturing, Vilnius Gediminas Technical University, 10223 Vilnius, Lithuania"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5936-9900","authenticated-orcid":false,"given":"Inga","family":"Morkvenaite-Vilkonciene","sequence":"additional","affiliation":[{"name":"Department of Mechatronics, Robotics and Digital Manufacturing, Vilnius Gediminas Technical University, 10223 Vilnius, Lithuania"}]}],"member":"1968","published-online":{"date-parts":[[2022,5,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2973","DOI":"10.1007\/s00170-018-1776-5","article-title":"A practical method of improving hole position accuracy in the robotic drilling process","volume":"96","author":"Shen","year":"2018","journal-title":"Int. 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