E/U core linear variable differential transformer for precise di

Details E/U core linear variable differential transformer for precise di E/U core linear variable differential transformer for precise di

1992-11-02

1995-11-21

O'Shea, Sandra L.

Electricity: measuring and testing

Magnetic

Displacement

32420724, 32420725, 324262, 34087036, G01B 714, G01B 730, G01R 3300

Patent

active

054690536

ABSTRACT:
The present invention relates to a displacement sensor for measuring submicroinch displacements. An LVDT is constructed from an E core having a primary winding on the center pole piece and two secondary windings about two additional pole pieces. The E core device is mounted on a stationary surface opposite a pair of U cores mounted on a translating surface. The U cores are spaced adjacent to each other, having an axis defined coincident with the axis of the E core pole piece which supports the primary winding. This position produces a null voltage from the differentially-connected secondary windings. Linear displacement between the U core and E core results in different coupling between the secondary windings and primary windings. The resulting voltage difference is a measurement of displacement .DELTA.X.

REFERENCES:
patent: 2419979 (1947-05-01), Wilson
patent: 2912657 (1959-11-01), Schaevitz
patent: 3026429 (1962-03-01), Karpchuk
patent: 3890516 (1975-06-01), Widdowson et al.
patent: 4051718 (1977-10-01), Meckl et al.
patent: 4458536 (1984-07-01), Ahn et al.
patent: 5047719 (1991-09-01), Johnson et al.
Notes on LVDT, Schaevitz Engineering, Jan. 1955, p. 1.
McGraw-Hill Book Co., "Servomechanism Analysis", p. 339, 1953.

Affiliated with

Also associated with

Rating

E/U core linear variable differential transformer for precise di does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with E/U core linear variable differential transformer for precise di, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and E/U core linear variable differential transformer for precise di will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1139900