{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,6]],"date-time":"2026-01-06T13:37:54Z","timestamp":1767706674043,"version":"3.38.0"},"reference-count":38,"publisher":"SAGE Publications","issue":"3","license":[{"start":{"date-parts":[[2019,9,17]],"date-time":"2019-09-17T00:00:00Z","timestamp":1568678400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"name":"Basic Research Project of Central Public Welfare Research Institutes"},{"DOI":"10.13039\/501100001809","name":"national natural science foundation of china","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100013280","name":"major basic research project of the natural science foundation of the jiangsu higher education institutions","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100013280","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100013088","name":"Qing Lan Project","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100013088","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Transactions of the Institute of Measurement and Control"],"published-print":{"date-parts":[[2020,2]]},"abstract":"<jats:p> Under the single-loop structure, the problem of overcurrent protection for permanent magnet synchronous motor (PMSM) is investigated in this paper. Due to the combination of speed loop and current loop, the q-axis current become a state of PMSM control system, instead of the output of current loop in the cascade control. As a consequence, the conventional controllers can not restrict the q-axis current into a safe zone. But an oversize transient current may lead to damage of hardwares and property loss. To this end, a new current-constrained controller is proposed to deal with the issue of over-current protection. Different from previous methods of state constraints, the effects of disturbance is taken into account of controller design. A reduced-order generalized proportional integral observer (RGPIO) is adopted to estimate the uncertainties and disturbances. Our method can be considered as a composition of current-constrained control plus feed-forward compensation based on RGPIO. A rigorous stability analysis for the closed-loop system is presented. Compared with the conventional PID controller, the proposed method not only limits q-axis current to a safe range, but also has a good anti-disturbance ability. The feasibility and efficiency of the proposed method is validated by both simulation and experimental results. <\/jats:p>","DOI":"10.1177\/0142331219871210","type":"journal-article","created":{"date-parts":[[2019,9,18]],"date-time":"2019-09-18T05:46:47Z","timestamp":1568785607000},"page":"374-385","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":14,"title":["A simplified composite current-constrained control for permanent magnet synchronous motor speed-regulation system with time-varying disturbances"],"prefix":"10.1177","volume":"42","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6019-106X","authenticated-orcid":false,"given":"Zhenxing","family":"Sun","sequence":"first","affiliation":[{"name":"College of Electrical Engineering and Control Science, Nanjing Tech University, P.R. China"}]},{"given":"Yangkun","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Biomedical Engineering, National University of Singapore, Singapore"}]},{"given":"Shenghui","family":"Li","sequence":"additional","affiliation":[{"name":"School of Electronic and Optical Engineering, Nanjing University of Science and Technology ZiJin College, P.R, China"}]},{"given":"Xinghua","family":"Zhang","sequence":"additional","affiliation":[{"name":"College of Electrical Engineering and Control Science, Nanjing Tech University, P.R. 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