{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,3]],"date-time":"2025-11-03T13:28:50Z","timestamp":1762176530903,"version":"build-2065373602"},"reference-count":13,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2011,7,14]],"date-time":"2011-07-14T00:00:00Z","timestamp":1310601600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/summer-heart-0930.chufeiyun1688.workers.dev:443\/https\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>This paper introduces in brief the traction system of a permanent magnet electrodynamic suspension (EDS) train. The synchronous traction mode based on long stators and track cable is described. A speed and position detection system is recommended. It is installed on board and is used as the feedback end. Restricted by the maglev train\u2019s structure, the permanent magnet electrodynamic suspension (EDS) train uses the non-contact method to detect its position. Because of the shake and the track joints, the position signal sent by the position sensor is always aberrant and noisy. To solve this problem, a linear discrete track-differentiator filtering algorithm is proposed. The filtering characters of the track-differentiator (TD) and track-differentiator group are analyzed. The four series of TD are used in the signal processing unit. The result shows that the track-differentiator could have a good effect and make the traction system run normally.<\/jats:p>","DOI":"10.3390\/s110707204","type":"journal-article","created":{"date-parts":[[2011,7,14]],"date-time":"2011-07-14T11:02:28Z","timestamp":1310641348000},"page":"7204-7218","update-policy":"https:\/\/summer-heart-0930.chufeiyun1688.workers.dev:443\/https\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["Research on the Filtering Algorithm in Speed and Position Detection of Maglev Trains"],"prefix":"10.3390","volume":"11","author":[{"given":"Chunhui","family":"Dai","sequence":"first","affiliation":[{"name":"College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha, Hunan, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhiqiang","family":"Long","sequence":"additional","affiliation":[{"name":"College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha, Hunan, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yunde","family":"Xie","sequence":"additional","affiliation":[{"name":"College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha, Hunan, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Song","family":"Xue","sequence":"additional","affiliation":[{"name":"College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha, Hunan, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2011,7,14]]},"reference":[{"key":"ref_1","unstructured":"Wu, XM (2008). Maglev Train, Shanghai Science and Technology Publishing House."},{"key":"ref_2","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_3","doi-asserted-by":"crossref","first-page":"1808","DOI":"10.1109\/TMAG.2005.846480","article-title":"Topology optimization of electromagnetic system considering magnetization direction","volume":"41","author":"Wang","year":"2005","journal-title":"IEEE Trans. Magn"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"901","DOI":"10.1109\/77.828377","article-title":"The inductrack: A simpler approach to magnetic levitation","volume":"10","author":"Richard","year":"2000","journal-title":"IEEE Trans. Appl. Supercond"},{"key":"ref_5","first-page":"143","article-title":"Theroy and design of a precise phase detector for linear synchronous motor","volume":"25","author":"Lou","year":"2005","journal-title":"Proc. CSEE"},{"key":"ref_6","first-page":"455","article-title":"Location and speed detection system for high-speed maglev vehicle","volume":"39","author":"Guo","year":"2004","journal-title":"J. Southwest JiaoTong Univ"},{"key":"ref_7","first-page":"12","article-title":"Design of speed and position detection system of high-speed maglev","volume":"31","author":"Qian","year":"2005","journal-title":"Comput. Eng"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"04912","DOI":"10.1063\/1.2951947","article-title":"Impedance of curved rectangular spiral coils around a conductive cylinder","volume":"104","author":"Burke","year":"2008","journal-title":"J. Appl. Phys"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"1238","DOI":"10.1109\/TMAG.2005.844838","article-title":"Eddy-current interaction of a long coil with a slot in a conductive plate","volume":"41","author":"Theodoulidis","year":"2005","journal-title":"IEEE Trans. Magn"},{"key":"ref_10","first-page":"24","article-title":"Auto disturbances rejection control technique","volume":"1","author":"Han","year":"2007","journal-title":"Front. Sci"},{"key":"ref_11","unstructured":"Xie, YD, Long, ZQ, and Li, J (2010, January 7\u20139). Analysis of the second-order nonlinear discrete-time tracking-differentiator as a filtering. Ji\u2019nan, China."},{"key":"ref_12","doi-asserted-by":"crossref","unstructured":"Xie, YD, Long, ZQ, Li, J, and Luo, K (2008, January 25\u201327). Research on a New Nonlinear Discrete-time Tracking-differentiator Filtering Characteristic. Chongqing, China.","DOI":"10.1142\/9789812799524_0200"},{"key":"ref_13","first-page":"127","article-title":"A high-speed discrete tracking-differentiator with high precision","volume":"26","author":"Xie","year":"2009","journal-title":"Control Theory Appl"}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/summer-heart-0930.chufeiyun1688.workers.dev:443\/https\/www.mdpi.com\/1424-8220\/11\/7\/7204\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T21:56:47Z","timestamp":1760219807000},"score":1,"resource":{"primary":{"URL":"https:\/\/summer-heart-0930.chufeiyun1688.workers.dev:443\/https\/www.mdpi.com\/1424-8220\/11\/7\/7204"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2011,7,14]]},"references-count":13,"journal-issue":{"issue":"7","published-online":{"date-parts":[[2011,7]]}},"alternative-id":["s110707204"],"URL":"https:\/\/summer-heart-0930.chufeiyun1688.workers.dev:443\/https\/doi.org\/10.3390\/s110707204","relation":{},"ISSN":["1424-8220"],"issn-type":[{"type":"electronic","value":"1424-8220"}],"subject":[],"published":{"date-parts":[[2011,7,14]]}}}