公开(公告)号：WO2021161066A1

公开(公告)日：2021-08-19

申请号：PCT/IB2020/051099

申请日：2020-02-11

Applicant: KA GROUP AG

Inventor： VEILLETTE, Jean-Francois ,  KALDANY, Serge

IPC: G01L3/10

Abstract: A torque sensor (10) including a shaft (14) that receives an applied torque (12) is disclosed. The shaft includes a magnetoelastic region (22) generates a non-negligible magnetic field responsive to the applied torque and one or more null regions (24, 26, 28) that each generates a negligible magnetic field. The torque sensor includes a plurality of null region sensors (70, 72, 74) proximal a null region that generate a null region magnetic field measure corresponding to a magnitude of an ambient magnetic field. The torque sensor includes a magnetoelastic region sensor (66, 68) proximal the magnetoelastic region that generates a magnetoelastic region magnetic field measure corresponding to the magnitude of the ambient magnetic field and a magnitude of the non-negligible magnetic field. The torque sensor includes a controller (78) coupled to the null region sensors and the magnetoelastic region sensor that calculates a magnitude of the applied torque based on the null region magnetic field measures and the magnetoelastic region magnetic field measure.

公开(公告)号：WO2021048601A1

公开(公告)日：2021-03-18

申请号：PCT/IB2019/057751

申请日：2019-09-13

Applicant: KA GROUP AG

Inventor： VEILLETTE, Jean-Francois ,  KALDANY, Serge

IPC: G01L3/10 ,  G01L5/22

Abstract: A torque sensor assembly including a shaft configured to receive an applied torque. The shaft includes at least one region being magnetoelastic and configured to generate a magnetic field in response to the applied torque. A plurality of sensors, circumferentially positioned around the at least one region, configured to generate a plurality of signals that are indicative of the magnetic field. Each of the plurality of signals includes multiple harmonic components. A controller is connected with the plurality of sensors and being configured to receive the plurality of signals and determine (i) an average of the plurality of signals in order to cancel at least one of the harmonic components of the multiple harmonic components for each of the plurality of signals, and (ii) a magnitude of the applied torque based on the average of the plurality of signals.