Wheel Speed Sensor Applying the Eddy Current Effect Through the High-Frequency Modulated Magnetic Field

1996 ◽  
Author(s):  
Katsuhiro Teramae ◽  
Hideki Fukuzono ◽  
Hiromi Nishimura ◽  
Shinobu Nagata ◽  
Kenichi Taguchi
Keyword(s):  
Magnetic Field ◽  
Eddy Current ◽  
High Frequency ◽  
Wheel Speed ◽  
Current Effect ◽  
Speed Sensor ◽  
Eddy Current Effect

scholarly journals Investigation of the eddy current effect on the high frequency response of the Mirnov probe on J-TEXT

2019 ◽  
Vol 90 (12) ◽  
pp. 123506
Author(s):  
Chengshuo Shen ◽  
Zhenming Cai ◽  
Tian Ren ◽  
Xitong Zhang ◽  
Qiming Hu ◽  
...  
Keyword(s):  
Frequency Response ◽  
Eddy Current ◽  
High Frequency ◽  
Current Effect ◽  
High Frequency Response ◽  
Eddy Current Effect

scholarly journals AC high magnetic field generator based on the Eddy-current effect

1986 ◽  
Vol 22 (5) ◽  
pp. 970-972 ◽  
Author(s):  
K. Bessho ◽  
S. Yamada ◽  
N. Sakai ◽  
T. Minamitani
Keyword(s):  
Magnetic Field ◽  
High Magnetic Field ◽  
Eddy Current ◽  
Current Effect ◽  
Eddy Current Effect ◽  
Magnetic Field Generator

scholarly journals Analysis and solution of eddy current induced in rail for medium and low speed maglev transportation system

2018 ◽  
Vol 4 (4) ◽  
pp. 129-137 ◽  
Author(s):  
Ying Yang ◽  
Wenyue Zhang ◽  
Laisheng Tong ◽  
Qibiao Peng ◽  
Huajun Luo ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Eddy Current ◽  
Levitation Force ◽  
Current Effect ◽  
Maglev Train ◽  
Running Speed ◽  
Low Speed ◽  
Eddy Current Effect ◽  
Maglev Transportation System ◽  
The Magnetic Field

Background: For medium and low speed maglev transportation system, the eddy current will be induced in rail, which is made of solid steel, while the train is running. The levitation force of electromagnets will be weakened by the magnetic field generated by eddy current in the rail, especially at the position of the forefront electromagnets. With the increase of train running speed, the eddy current effect will also increase, which will reach 30 % at 100 km/h, and which will directly affect the levitation stability of the train during high-speed running. Put it another way, it will limit the further improvement of the running speed of the medium and low speed maglev train. Aim: In order to solve the above problem, and compensate the levitation force reduced by the eddy current effect. Methods: The FEA method is used to obtain the magnetic field distribution and levitation force changing with the train speed. And taking the middle and low speed maglev trains and rails of Changsha Maglev Express as the research object, we have adopted two solutions, and the prototypes of airsprings and levitation magnets are manufactured and tested in the train. Results: The test result show that the currents of the windings at the front end of the two forefront electromagnets are reduced obviously. Conclusion: In this paper, the medium and low speed maglev train and rail used by Changsha Maglev Express are studied, the eddy current effect is analyzed, and two solutions are proposed. The results show that the solution methods can alleviate the eddy current effects to some extent.

scholarly journals Resonant Diaphragm Liquid Density Sensor

2011 ◽  
Vol 1 ◽  
pp. 121-124
Author(s):  
Yu Xiao Zhang ◽  
Xian Quan Zeng ◽  
Xin Jie Wang
Keyword(s):  
Residual Stress ◽  
Eddy Current ◽  
Processing Technology ◽  
Liquid Density ◽  
Current Effect ◽  
Eddy Current Effect

This paper designs a resonant diaphragm liquid density sensor. From the reality, a resonant diaphragm is designed and manufactured. Processing technology on resonant diaphragm is studied and improved through compensating elastic error, and eliminating residual stress. Incentive coil is designed using the eddy current effect.

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