Sensors 2012, 12(8), 10621-10638; doi:10.3390/s120810621
Article

Optimal Design of the Absolute Positioning Sensor for a High-Speed Maglev Train and Research on Its Fault Diagnosis

College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha, Hunan 410073, China
* Author to whom correspondence should be addressed.
Received: 5 July 2012; in revised form: 25 July 2012 / Accepted: 25 July 2012 / Published: 3 August 2012
(This article belongs to the Section Physical Sensors)
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Abstract: 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.
Keywords: high-speed maglev train; absolute positioning sensor; fault diagnosis; position mark plate; support vector machine

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MDPI and ACS Style

Zhang, D.; Long, Z.; Xue, S.; Zhang, J. Optimal Design of the Absolute Positioning Sensor for a High-Speed Maglev Train and Research on Its Fault Diagnosis. Sensors 2012, 12, 10621-10638.

AMA Style

Zhang D, Long Z, Xue S, Zhang J. Optimal Design of the Absolute Positioning Sensor for a High-Speed Maglev Train and Research on Its Fault Diagnosis. Sensors. 2012; 12(8):10621-10638.

Chicago/Turabian Style

Zhang, Dapeng; Long, Zhiqiang; Xue, Song; Zhang, Junge. 2012. "Optimal Design of the Absolute Positioning Sensor for a High-Speed Maglev Train and Research on Its Fault Diagnosis." Sensors 12, no. 8: 10621-10638.

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