Method and apparatus for determining the position of an armature

Details Method and apparatus for determining the position of an armature Method and apparatus for determining the position of an armature

1995-06-07

1997-02-04

Snow, Walter E.

Electricity: measuring and testing

Magnetic

Displacement

32420724, 324236, G01B 714, G01N 2772, G01R 3312

Patent

active

056002378

ABSTRACT:
Electromagnetic actuators having a coil and an armature are used in a number of applications in which it is useful to have an indication of the position of the armature with respect to the coil without the use of external sensors. Accordingly, an actuator control system is provided for determining the position of the armature with respect to the coil in response to the current magnitude and frequency of current flowing in the coil.

REFERENCES:
patent: 5172298 (1992-12-01), Shimizu et al.
patent: 5420507 (1995-05-01), Laskowski

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