公开(公告)号：US20180306654A1

公开(公告)日：2018-10-25

申请号：US15770791

申请日：2016-11-02

Applicant: BASF SE

Inventor： Oskar Stephan ,  Roland Schuhmann ,  Tom Catterman

IPC: G01L1/12 ,  G01L3/10

CPC classification number: G01L1/125 ,  G01L1/127 ,  G01L3/102 ,  G01L3/103 ,  G01L3/105

Abstract: The invention relates to a device (14) and to a method for the contactless detection of a torque of a shaft (10) and/or torsional natural frequencies and/or torsional oscillations. The shaft (10) contains a ferromagnetic material. A measurement head (16) facing toward a shaft wall (12) comprises an excitation coil (22) which couples a magnetic field into the shaft (10). The measurement head (16) furthermore contains a number of measurement coils (24, 26, 28, 30), which measure the magnetic field emerging from the shaft (10).