Inductive position indicator

Details Inductive position indicator Inductive position indicator

G - Physics

01

D

G01D 5/20 (2006.01) G01B 7/02 (2006.01)

Patent

CA 2067076

An inductive position indicator comprises an exciter coil for generating a magnetic flux, a measurement coil arrangement, and a flux guide means of ferromagnetic material which predetermines for the magnetic flux a closed measurement path which includes at least one gap, in the region of which the measurement coil arrangement is so positioned that the magnetic flux passing therethrough changes in dependence on the position to be monitored. To improve the fidelity of the characteristic and enhance measurement accuracy, the flux guide means provides at least one further closed compensating path which carries the magnetic flux passing therethrough, past the magnetic coil arrangement. When there are two mutually adjacent measurement coils through the surfaces of which the measurement flux can pass in a variable fashion and the output signal difference of which is included in the position signal, the surfaces enclosed by the measurement coils have at least one common edge portion over which the measurement flux can move.

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