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In order to effectively suppress the synchronous current generated by the rotor unbalance, the coil current is viewed as the controlled variable, and a compound controller is designed by combining the proposed NVSLMS algorithm with the original controller of the AMB system. According to the root locus analysis, the strategy of switching step size factor is adopted to ensure the stability of the closed-loop system within the whole speed range. Finally, the magnetically suspended flywheel (MSFW) is used as the experimental object, and the performance of the proposed method is validated by simulation and experiment. The results illustrate that the proposed NVSLMS has good tracking speed and that the performance of the current attenuation is superior to those of the traditional variable step size least mean square methods.<\/jats:p>","DOI":"10.1177\/01423312241282812","type":"journal-article","created":{"date-parts":[[2024,11,18]],"date-time":"2024-11-18T05:54:38Z","timestamp":1731909278000},"page":"243-252","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":2,"title":["Synchronous current suppression of active magnetic bearing system based on a nonlinear variable step-size least mean square (LMS) algorithm"],"prefix":"10.1177","volume":"48","author":[{"given":"Huijuan","family":"Zhang","sequence":"first","affiliation":[{"name":"School of Electrical Engineering, Henan University of Technology, Zhengzhou, China"},{"name":"School of Automation, Beijing Institute of Technology, Beijing, China"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-3218-772X","authenticated-orcid":false,"given":"Jiaqi","family":"Xue","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering, Henan University of Technology, Zhengzhou, China"}]},{"given":"Hang","family":"Yuan","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering, Henan University of Technology, Zhengzhou, China"}]},{"given":"Miaoxin","family":"Ji","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering, Henan University of Technology, Zhengzhou, China"}]},{"given":"Jianjuan","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering, Henan University of Technology, Zhengzhou, China"}]}],"member":"179","published-online":{"date-parts":[[2024,11,18]]},"reference":[{"key":"e_1_3_2_2_1","doi-asserted-by":"publisher","DOI":"10.3390\/machines11020188"},{"key":"e_1_3_2_3_1","doi-asserted-by":"publisher","DOI":"10.3233\/JAE-170061"},{"key":"e_1_3_2_4_1","doi-asserted-by":"publisher","DOI":"10.4028\/www.scientific.net\/AMR.189-193.4276"},{"key":"e_1_3_2_5_1","doi-asserted-by":"publisher","DOI":"10.1109\/TIE.2023.3281689"},{"key":"e_1_3_2_6_1","doi-asserted-by":"publisher","DOI":"10.1177\/1077546315576430"},{"key":"e_1_3_2_7_1","article-title":"Synchronous vibration force suppression of magnetically suspended CMG Based on modified double SOGI-FLL","author":"Cui P","year":"2022","unstructured":"Cui P, Li Y, Li J, et al. 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