公开(公告)号：US3613442A

公开(公告)日：1971-10-19

申请号：US3613442D

申请日：1969-12-04

Applicant: ASEA AB

Inventor： BIELSTEN NILS OVE

IPC: G01L1/12 ,  G01L9/16 ,  H01L41/12 ,  G01L5/12

CPC classification number: G01L1/127 ,  G01L1/125 ,  Y10S73/02

Abstract: A MAGNETO-ELASTIC FORCE TRANSDUCER FORMED BY A LAMINATED CORE OF MAGNETO-STRICTIVE MATERIAL HAS APERTURES CONTAINING A FLUX GENERATING WINDING AND A MEASURING WINDING. THE CORE IS A BEAM FIXED AT ONE END, THE OTHER END HAVING ENGAGEMENT SURFACES FOR FORCES WHICH ARE EXERTED GENERALLY PERPENDICULAR TO THE LONGITUDINAL DIRECTION OF THE BEAM. THE APERTURES EXTEND PERPENDICULAR TO THE LONGITUDINAL DIRECTION OF THE BEAM AND OF THE FORCE OPERATING ON IT. THE PARTS OF THE CORE BETWEEN THE APERATURES HAVE A LONGITUDINAL DIRECTION WHICH SUBSTANTIALLY COINCIDES WITH THE DIRECTION OF THE MAIN STRESSES IN THE SHEARING STRESS FIELD. THE BEAM MAY BE PROVIDED WITH SLOTS OR THE OPENINGS MAY BE OF ENLARGED GENERALLY TRIANGULAR CROSS SECTION IN ORDER TO REDUCE THE STIFFNESS OF THE BEAM.