{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,6]],"date-time":"2026-06-06T20:10:44Z","timestamp":1780776644817,"version":"3.54.1"},"reference-count":15,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2019,8,16]],"date-time":"2019-08-16T00:00:00Z","timestamp":1565913600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Key R &amp; D Program of China","award":["2016YFB1200601"],"award-info":[{"award-number":["2016YFB1200601"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Symmetry"],"abstract":"<jats:p>The maglev train is a whole new method of transportation without wheels, consisting of 20 groups of symmetry suspension units. The magnetic levitation system plays a major role in suspending the maglev train stably and following the track quickly with the desired gap. However, vertical track irregularity in the maglev train line has a dreadful effect on the tracking performance of the magnetic levitation system. The investigations carried out by our team have revealed that the fluctuation of the suspension gap becomes more and more serious with increases in running speed. In this paper, a mathematical model with consideration of vertical track irregularity is established. In order to overcome and suppress the fluctuation of the suspension gap, we propose a new strategy which includes installing an accelerometer on the electromagnet to address this problem. This strategy has already been successfully implemented and applied to the suspension controller for a magnetic levitation system in the Changsha maglev express. Real operation data indicates the tracking performance of the magnetic levitation system was obviously improved.<\/jats:p>","DOI":"10.3390\/sym11081053","type":"journal-article","created":{"date-parts":[[2019,8,19]],"date-time":"2019-08-19T06:10:14Z","timestamp":1566195014000},"page":"1053","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["A New Strategy for Improving the Tracking Performance of Magnetic Levitation System in Maglev Train"],"prefix":"10.3390","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3538-1304","authenticated-orcid":false,"given":"Mingda","family":"Zhai","sequence":"first","affiliation":[{"name":"College of Intelligence Science and Technology, National University of Defense Technology, Changsha 410073, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhiqiang","family":"Long","sequence":"additional","affiliation":[{"name":"College of Intelligence Science and Technology, National University of Defense Technology, Changsha 410073, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaolong","family":"Li","sequence":"additional","affiliation":[{"name":"College of Intelligence Science and Technology, National University of Defense Technology, Changsha 410073, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2019,8,16]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1917","DOI":"10.1109\/TMAG.2006.875842","article-title":"Review of Maglev Train Technologies","volume":"42","author":"Lee","year":"2006","journal-title":"IEEE Trans. Magn."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"36","DOI":"10.17816\/transsyst20184336-43","article-title":"Application and further development of Maglev transportation in China","volume":"4","author":"Lin","year":"2018","journal-title":"Transp. Syst. Technol."},{"key":"ref_3","first-page":"1917","article-title":"5-DOF Real-Time Control of Active Electrodynamic MAGLEV","volume":"42","author":"Gutierrez","year":"2018","journal-title":"IEEE Trans. Ind. Electron."},{"key":"ref_4","first-page":"1","article-title":"Gust Wind Effects on Stability and Ride Quality of Actively Controlled Maglev Guideway Systems","volume":"35","author":"Min","year":"2017","journal-title":"Shock Vib."},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Castellanos, M., Miguel, L., Galluzzi, R., Bonfitto, A., Tonoli, A., and Amati, N. (2018). Magnetic Levitation Control Based on Flux Density and Current Measurement. Appl. 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