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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 program flow diagram of the slave MCU.
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f14-sensors-12-10621: The program flow diagram of the slave MCU.

Mentions: The computer control of the system is a master-slave structure. The master MCU is a C8051F040 whose task it is to communicate with the upper fault diagnosis computer and receive the commands from the upper computer. The slave MCUs are five digital signal processors that are mentioned above. The slave MCUs receive the commands from the master MCU by I2C bus, and then set up the AD converter to sample every key node by controlling the CPLD. Afterwards, they do the digital signal processing and the fault diagnosis. Finally, the master MCU sends out the reading result command, gathering all the results from the five channels of slave MCUs and generating a fault diagnosis datagram for the absolute positioning sensor. If required, the master MCU sends the datagram to the upper computer by the CAN bus. The program flow diagram of the slave MCU is shown in Figure 14.


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 program flow diagram of the slave MCU.
© Copyright Policy
Related In: Results  -  Collection

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

f14-sensors-12-10621: The program flow diagram of the slave MCU.
Mentions: The computer control of the system is a master-slave structure. The master MCU is a C8051F040 whose task it is to communicate with the upper fault diagnosis computer and receive the commands from the upper computer. The slave MCUs are five digital signal processors that are mentioned above. The slave MCUs receive the commands from the master MCU by I2C bus, and then set up the AD converter to sample every key node by controlling the CPLD. Afterwards, they do the digital signal processing and the fault diagnosis. Finally, the master MCU sends out the reading result command, gathering all the results from the five channels of slave MCUs and generating a fault diagnosis datagram for the absolute positioning sensor. If required, the master MCU sends the datagram to the upper computer by the CAN bus. The program flow diagram of the slave MCU is shown in Figure 14.

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.