Displacement sensors using soft magnetostrictive alloys

Author

Hristoforou, E. ; Reilly, R.E.

Author_Institution

Inst. of Mater. Sci., Athens, Greece

Volume

30

Issue

5

fYear

1994

fDate

9/1/1994 12:00:00 AM

Firstpage

2728

Lastpage

2733

Abstract

We report results on the response of a family of displacement sensors, which are based on the magnetostrictive delay line (MDL) technique, using current conductors orthogonal to the MDL. Such sensing technique is based on the change of the magnetic circuit at the acoustic stress point of origin due to the displacement of a soft magnetic material above it. Integrated arrays of sensors can be obtained due to the acoustic delay line technique and they can be used as tactile arrays, digitizers or devices for medical applications (gait analysis etc.), while absence of hysteresis and low cost of manufacturing make them competent in this sector of sensor market

Keywords

acoustic delay lines; displacement measurement; electric sensing devices; magnetic circuits; magnetostrictive devices; acoustic delay line; acoustic stress; current conductors; digitizers; displacement sensors; gait analysis; integrated arrays; magnetic circuit; magnetostrictive delay line; medical applications; soft magnetostrictive alloys; tactile arrays; Acoustic arrays; Acoustic devices; Acoustic sensors; Biomedical acoustics; Delay lines; Magnetic sensors; Magnetostriction; Sensor arrays; Soft magnetic materials; Tactile sensors;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.312512

Filename

312512