{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,27]],"date-time":"2026-01-27T10:25:14Z","timestamp":1769509514132,"version":"3.49.0"},"reference-count":25,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2025,6,16]],"date-time":"2025-06-16T00:00:00Z","timestamp":1750032000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100015800","name":"Jilin Province Development and Reform Commission Project","doi-asserted-by":"publisher","award":["2022C045-11"],"award-info":[{"award-number":["2022C045-11"]}],"id":[{"id":"10.13039\/100015800","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100015800","name":"Jilin Province Development and Reform Commission Project","doi-asserted-by":"publisher","award":["20190101018JH"],"award-info":[{"award-number":["20190101018JH"]}],"id":[{"id":"10.13039\/100015800","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100015800","name":"Jilin Province Development and Reform Commission Project","doi-asserted-by":"publisher","award":["2024054"],"award-info":[{"award-number":["2024054"]}],"id":[{"id":"10.13039\/100015800","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Jilin Province Science and Technology Department project","award":["2022C045-11"],"award-info":[{"award-number":["2022C045-11"]}]},{"name":"Jilin Province Science and Technology Department project","award":["20190101018JH"],"award-info":[{"award-number":["20190101018JH"]}]},{"name":"Jilin Province Science and Technology Department project","award":["2024054"],"award-info":[{"award-number":["2024054"]}]},{"name":"Graduate Innovation Program of Beihua University Project","award":["2022C045-11"],"award-info":[{"award-number":["2022C045-11"]}]},{"name":"Graduate Innovation Program of Beihua University Project","award":["20190101018JH"],"award-info":[{"award-number":["20190101018JH"]}]},{"name":"Graduate Innovation Program of Beihua University Project","award":["2024054"],"award-info":[{"award-number":["2024054"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Symmetry"],"abstract":"<jats:p>In response to the limitations of suboptimal control accuracy, compromised synchronization capability, and reduced stability inherent in PID control for conventional shaftless multi-permanent magnet synchronous motor drive systems, this article establishes a three-motor synchronous control system model for a shaftless printing system. On this basis, the speed loop adopts a sliding mode controller (NSMC) based on a new approach law, and the current loop adopts an improved super spiral structure. At the same time, the compensator of the deviation coupling control structure (NDCS) is optimized by weighted arithmetic mean. Finally, comparative simulation experiments were conducted on the system model using various algorithms. The results show that the deviation coupling control structure based on improved sliding mode control has better anti-interference ability, control accuracy, and synchronization in the synchronous control strategy of a multi-permanent magnet motor drive in a shaftless printing system, which is conducive to the safe and stable operation of shaftless printing systems under multiple working conditions.<\/jats:p>","DOI":"10.3390\/sym17060958","type":"journal-article","created":{"date-parts":[[2025,6,17]],"date-time":"2025-06-17T04:20:23Z","timestamp":1750134023000},"page":"958","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Research on Coordinated Control of Multi-PMSM for Shaftless Overprinting System"],"prefix":"10.3390","volume":"17","author":[{"given":"Yuntao","family":"Xu","sequence":"first","affiliation":[{"name":"School of Electrical and Information Engineering, Beihua University, Jilin 132000, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1210-5526","authenticated-orcid":false,"given":"Cheng","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Electrical and Information Engineering, Beihua University, Jilin 132000, China"}]},{"given":"Zihao","family":"Huang","sequence":"additional","affiliation":[{"name":"School of Electrical and Information Engineering, Beihua University, Jilin 132000, China"}]},{"given":"Shiyuan","family":"Sun","sequence":"additional","affiliation":[{"name":"School of Electrical and Information Engineering, Beihua University, Jilin 132000, China"}]},{"given":"Zewei","family":"Cui","sequence":"additional","affiliation":[{"name":"School of Electrical and Information Engineering, Beihua University, Jilin 132000, China"}]}],"member":"1968","published-online":{"date-parts":[[2025,6,16]]},"reference":[{"key":"ref_1","unstructured":"Wang, Z., and Zhang, H. 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