Analysis of a perpendicular-type eddy-current speed meter

Analysis of a perpendicular-type eddy-current speed meter

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The method of the noncontacting speed measurement of a moving conductive slab is to use the eddy current effect. The slab speed can be measured by the variation of the electromotive force of a detecting coil which is arranged in the neighbourhood of an exciting coil. In the paper, we propose an eddy-current speed meter which consists of one exciting coil and one detecting coil, perpendicular to each other. We carried out a theoretical analysis of this speed meter and confirmed validity of the theoretical formula by experiment. We also obtained some theoretical predictions by the calculation examples. Since this type of speed meter is of a simple structure, and capable of being miniaturised, it is very useful for the continuous manufacturing process, etc.


    1. 1)
      • Y. Hamasaki , K. Kobayashi . Melting metal flow meter. Trans. Soc. Instrum. and Control Engrs. Japan , 523 - 527
    2. 2)
      • J.A. Shercliff . (1962) , The theory of electromagnetic flow-measurement.
    3. 3)
      • C.C. Feng , W.E. Deeds . Analysis of eddy-current flow-meters. J. Appl. Phys. , 2935 - 2940
    4. 4)
      • M. Hirayama . Theoretical model of an eddy-current flow-sensor. IEEE Trans. Nuclear Sci. , 2021 - 2030
    5. 5)
      • Y. Mimoto . On the sodium flowmeters. J. Soc. Instrum. and Control Engrs. , 659 - 664
    6. 6)
      • K. Mochizuki . Fast breeder reactor. J. Soc. Instrum. and Control Engrs. , 573 - 582
    7. 7)
      • H.H. Woodson , J.R. Melcher . (1968) , Electromechanical dynamics.
    8. 8)
      • N. Takehira , A. Tanaka , K. Toda . Analysis of a speed-meter utilizing eddy current effect. Trans. IEE of Japan , 457 - 464
    9. 9)
      • N. Takehira , A. Tanaka . Analysis of a transmitted type speed-meter utilizing eddy current effect. Trans. IEE of Japan , 483 - 490
    10. 10)
      • A. Tanaka , N. Takehira . Eddy-current speed meter using galvanomagnetic devices. Trans. IEE of Japan , 267 - 274
    11. 11)
      • M. Otani , T. Tsukioka , H. Yamada . (1975) , Speed measurement using eddycurrent.

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