{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,19]],"date-time":"2026-02-19T15:55:44Z","timestamp":1771516544121,"version":"3.50.1"},"reference-count":16,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2012,8,3]],"date-time":"2012-08-03T00:00:00Z","timestamp":1343952000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>This paper studies an absolute positioning sensor for a high-speed maglev train and its fault diagnosis method. The absolute positioning sensor is an important sensor for the high-speed maglev train to accomplish its synchronous traction. It is used to calibrate the error of the relative positioning sensor which is used to provide the magnetic phase signal. On the basis of the analysis for the principle of the absolute positioning sensor, the paper describes the design of the sending and receiving coils and realizes the hardware and the software for the sensor. In order to enhance the reliability of the sensor, a support vector machine is used to recognize the fault characters, and the signal flow method is used to locate the faulty parts. The diagnosis information not only can be sent to an upper center control computer to evaluate the reliability of the sensors, but also can realize on-line diagnosis for debugging and the quick detection when the maglev train is off-line. The absolute positioning sensor we study has been used in the actual project.<\/jats:p>","DOI":"10.3390\/s120810621","type":"journal-article","created":{"date-parts":[[2012,8,3]],"date-time":"2012-08-03T11:02:44Z","timestamp":1343991764000},"page":"10621-10638","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":18,"title":["Optimal Design of the Absolute Positioning Sensor for a High-Speed Maglev Train and Research on Its Fault Diagnosis"],"prefix":"10.3390","volume":"12","author":[{"given":"Dapeng","family":"Zhang","sequence":"first","affiliation":[{"name":"College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha, Hunan 410073, 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 410073, 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 410073, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Junge","family":"Zhang","sequence":"additional","affiliation":[{"name":"College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha, Hunan 410073, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2012,8,3]]},"reference":[{"key":"ref_1","unstructured":"Liu, H.Q. (1995). Transrapid, University of Electronic Since and Technology of China Press."},{"key":"ref_2","unstructured":"Wu, X.M. (2003). Maglev Train, Shanghai Science and Technology Press."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"4717","DOI":"10.1109\/TMAG.2011.2159237","article-title":"Study of EDS & EMS hybrid suspension system with permanent-magnet halbach array","volume":"47","author":"Long","year":"2011","journal-title":"IEEE Trans. Magn."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"5224","DOI":"10.3390\/s120505225","article-title":"A high precision position sensor design and its signal processing algorithm for a maglev train","volume":"12","author":"Xue","year":"2012","journal-title":"Sensors"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"7204","DOI":"10.3390\/s110707204","article-title":"Research on the filtering algorithm in speed and position detection of mdpiaglev trains","volume":"11","author":"Dai","year":"2011","journal-title":"Sensors"},{"key":"ref_6","first-page":"33","article-title":"Research on absolute positioning system of maglev vehicle","volume":"3","author":"Wang","year":"2005","journal-title":"Electr. Drive Locomot."},{"key":"ref_7","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_8","first-page":"12","article-title":"Design of speed and position detection system for high-speed maglev","volume":"31","author":"Qian","year":"2005","journal-title":"Comp. Eng."},{"key":"ref_9","first-page":"109","article-title":"Research on speed and position detection system of high speed maglev train","volume":"33","author":"Wu","year":"2011","journal-title":"J. Natl. Univ. Defense Tech."},{"key":"ref_10","first-page":"884","article-title":"Application of FPGA to absolute positioning system of maglev vehicles","volume":"27","author":"Qian","year":"2006","journal-title":"Chin. J. Sci. Instr."},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Vapnik, V.N. (2000). The Nature of Statistical Learning Theory, Tsinghua University Press. [1st ed.].","DOI":"10.1007\/978-1-4757-3264-1"},{"key":"ref_12","unstructured":"Cristianini, N., and Shawe, T.J. (2005). An Introduction to Support Vector Machines, China Machine Press."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"75","DOI":"10.1016\/j.epsr.2011.09.012","article-title":"Power transformer fault diagnosis based on dissolved gas analysis by support vector machine","volume":"83","author":"Bacha","year":"2012","journal-title":"Electr. Power Syst. Res."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"1685","DOI":"10.1016\/j.ymssp.2008.01.005","article-title":"Fault diagnosis based on Walsh transform and support vector machine","volume":"22","author":"Xiang","year":"2008","journal-title":"Mech. Syst. Signal Proc."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"2621","DOI":"10.1016\/j.eswa.2011.08.117","article-title":"Vibrant fault diagnosis for hydroelectric generator units with a new combination of rough sets and support vector machine","volume":"39","author":"Zhang","year":"2012","journal-title":"Expert Syst. Appl."},{"key":"ref_16","first-page":"87","article-title":"A fault diagnosis method based on ensemble support vector machines","volume":"19","author":"Wang","year":"2012","journal-title":"Electron. Opt. 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