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A variable reluctance sensor

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1 Author(s)
Lemarquand, G. ; Savoie Univ., Annecy

The author presents the characteristics and the performance of a novel variable-reluctance sensor. He describes two designs for this inductive transducer which are very easy to realize. They are based on two shapes, both of which generate a sinusoidal variation of the air gap and therefore an inversely sinusoidal variation of the reluctance. The first shape utilizes an off-centering rotor, the second a buckled surface. The performance, resolution (15 bits), and accuracy (±3 of arc) of the prototype are presented. The prototype demonstrates the good measurement performance of this low-cost shaft-angle transducer, as well as its robustness, reliability, and stability

Published in:
Magnetics, IEEE Transactions on  (Volume:25 ,  Issue: 5 )

Date of Publication: Sep 1989

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