Conclusions
The voltage sensitivity of inductive displacements transducers increases with a rising inductance. It depends on the ratio of core diameters. An optimum ratio between the central core diameter and the external diameter' is y=0.345, and between the coil diameter and the external diameter it is x=0.9. The choice of these ratios, and above all of the second ratio, is critical, since it has a marked effect on the transducer's sensitivity. Frequency variations do not affect these ratios. Theoretical computations have been confirmed by experimental results.
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Literature cited
L. F. Kulikovskii, Inductive Displacements Meters [in Russian], Gosenergoizdat (1961).
A. M. Turichin, Electrical Measurements of Nonelectrical Quantities [in Russian], Gosenergoizdat (1959).
I. A. Maslarov, Computations of the Maximum Sensitivity of Inductive Transducers. Scientific Transactions of the MéI (Moscow Institute of Energetics), Sofia (1965).
I. N. Herve, Mesure des micro-deplacements, Electronique industrielle, No. 65, Paris (1963).
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Maslarov, I.A. Optimum relationships in the dimensions of sensing inductive transducers. Meas Tech 9, 217–219 (1966). https://doi.org/10.1007/BF00977107
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DOI: https://doi.org/10.1007/BF00977107