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Optimal design of the absolute positioning sensor for a high-speed maglev train and research on its fault diagnosis.

Zhang D, Long Z, Xue S, Zhang J - Sensors (Basel) (2012)

Bottom Line: 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.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.

View Article: PubMed Central - PubMed

Affiliation: College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha, Hunan 410073, China. zhangdapeng12@163.com

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.

No MeSH data available.


The structure of the absolute positioning sensor on the maglev train.
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f1-sensors-12-10621: The structure of the absolute positioning sensor on the maglev train.

Mentions: The high-speed maglev train moves without any contact with the tracks depending on the electromagnetic force levitation, and it is driven by a linear synchronous motor. In order to obtain the optimal drive efficiency, the accurate electrical angle is needed when the train is running. Relative positioning sensors can achieve millimeter-sized positioning resolution, but they suffer from accumulated errors [1–3]. In order to reset the relative accumulated errors, it is necessary to use absolute positioning sensors to calibrate the relative positioning sensors at intervals [4,5]. The structure of the absolute positioning sensor on the maglev train is shown in Figure 1.


Optimal design of the absolute positioning sensor for a high-speed maglev train and research on its fault diagnosis.

Zhang D, Long Z, Xue S, Zhang J - Sensors (Basel) (2012)

The structure of the absolute positioning sensor on the maglev train.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3472847&req=5

f1-sensors-12-10621: The structure of the absolute positioning sensor on the maglev train.
Mentions: The high-speed maglev train moves without any contact with the tracks depending on the electromagnetic force levitation, and it is driven by a linear synchronous motor. In order to obtain the optimal drive efficiency, the accurate electrical angle is needed when the train is running. Relative positioning sensors can achieve millimeter-sized positioning resolution, but they suffer from accumulated errors [1–3]. In order to reset the relative accumulated errors, it is necessary to use absolute positioning sensors to calibrate the relative positioning sensors at intervals [4,5]. The structure of the absolute positioning sensor on the maglev train is shown in Figure 1.

Bottom Line: 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.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.

View Article: PubMed Central - PubMed

Affiliation: College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha, Hunan 410073, China. zhangdapeng12@163.com

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.

No MeSH data available.