公开(公告)号：SE9904572L

公开(公告)日：2001-06-15

申请号：SE9904572

申请日：1999-12-14

Applicant: ABB AB

Inventor： WALLIN CHRISTER ,  LING HANS ,  HASSEL LARS

IPC: G01L3/10 ,  H01L41/12

Abstract: The present invention relates to a magnetostrictive sensor for measuring a torque in a shaft. The sensor comprises at least one active magnetostrictive region on the shaft, a surface pattern in the magnetostrictive region such that it obtains anisotropic properties, a first means arranged to generate a magnetic field varying in time in the magnetostrictive region and a second means arranged to sense variation in the permeability in the magnetostrictive region. Said magnetostrictive region comprises a first layer of a magnetostrictive material which is provided on the surface of the shaft and that said surface pattern is formed by a second layer of a non-magnetostrictive material comprising a low resistivity.

公开(公告)号：DE69519227D1

公开(公告)日：2000-11-30

申请号：DE69519227

申请日：1995-03-22

Applicant: ABB AB VAESTERAAS

Inventor： LING HANS ,  SOBEL JARL ,  UGGLA J

IPC: G01L1/12 ,  G01L3/10

Abstract: PCT No. PCT/SE95/00289 Sec. 371 Date Sep. 4, 1996 Sec. 102(e) Date Sep. 4, 1996 PCT Filed Mar. 22, 1995 PCT Pub. No. WO95/27191 PCT Pub. Date Oct. 12, 1995A magnetoelastic torque transducer for measuring, in a non-contacting manner, the torque in a stationary or a rotating shaft. The transducer comprises a shaft (1) with surrounding excitation windings (2, 3) and measuring windings (10, 11). Concentrically with the windings, anisotropic measuring zones are created by applying layers (8, 9), for example in the form of copper strips, on the surface of the shaft. The angle between the strips and a generatrix to the cylinder surface of the transducer shaft is in a preferred embodiment chosen to be +/-45 DEG (FIG. 5).

公开(公告)号：DE60043857D1

公开(公告)日：2010-04-01

申请号：DE60043857

申请日：2000-12-14

Applicant: ABB AB

Inventor： WALLIN CHRISTER ,  LING HANS ,  HASSEL LARS

IPC: G01L3/10 ,  H01L41/12

Abstract: The present invention relates to a magnetostrictive sensor for measuring a torque in a shaft. The sensor comprises at least one active magnetostrictive region on the shaft, a surface pattern in the magnetostrictive region such that it obtains anisotropic properties, a first means arranged to generate a magnetic field varying in time in the magnetostrictive region and a second means arranged to sense variation in the permeability in the magnetostrictive region. Said magnetostrictive region comprises a first layer of a magnetostrictive material which is provided on the surface of the shaft and that said surface pattern is formed by a second layer of a non-magnetostrictive material comprising a low resistivity.

公开(公告)号：SE0003441L

公开(公告)日：2002-03-28

申请号：SE0003441

申请日：2000-09-27

Applicant: ABB AB

Inventor： SHAHCHERAGHI ROOZBEH ,  SOBEL JARL ,  BLOMKVIST KENT ,  LING HANS

IPC: G01L3/10

Abstract: A torque transducer for measuring torque transmitted in a rotating as well as a stationary shaft. The torque transducer comprises a transducer shaft 1 arranged with a cylinder-shaped magnetoelastic region 2 fixed to the cylindrical periphery of the transducer shaft, which cylinder-shaped magnetoelastic region is permanently magnetized in the azimuthal direction. The transducer shaft with the cylinder-shaped magnetoelastic region is surrounded by a winding 4 which is supplied by an alternating current. Further, the winding is connected to a phase-sensitive detector 5. According to the present invention, a magnetic and non-linear ferromagnetic material 3' is arranged in physical contact with the cylinder-shaped magnetoelastic region 2. The advantages are that the transducer shaft is manufactured independently of the magnetic properties of the shaft material and may substantially consist of a ferromagnetic material.

公开(公告)号：ES2154334T3

公开(公告)日：2001-04-01

申请号：ES95914624

申请日：1995-03-22

Applicant: ABB AB

Inventor： LING HANS ,  SOBEL JARL ,  UGGLA DAN J

IPC: G01L1/12 ,  G01L3/10

Abstract: PCT No. PCT/SE95/00289 Sec. 371 Date Sep. 4, 1996 Sec. 102(e) Date Sep. 4, 1996 PCT Filed Mar. 22, 1995 PCT Pub. No. WO95/27191 PCT Pub. Date Oct. 12, 1995A magnetoelastic torque transducer for measuring, in a non-contacting manner, the torque in a stationary or a rotating shaft. The transducer comprises a shaft (1) with surrounding excitation windings (2, 3) and measuring windings (10, 11). Concentrically with the windings, anisotropic measuring zones are created by applying layers (8, 9), for example in the form of copper strips, on the surface of the shaft. The angle between the strips and a generatrix to the cylinder surface of the transducer shaft is in a preferred embodiment chosen to be +/-45 DEG (FIG. 5).

公开(公告)号：ES2339328T3

公开(公告)日：2010-05-19

申请号：ES00987906

申请日：2000-12-14

Applicant: ABB AB

Inventor： WALLIN CHRISTER ,  LING HANS ,  HASSEL LARS

IPC: G01L3/10 ,  H01L41/12

Abstract: Un detector magnetoestrictivo para medir un par de torsión en un eje (1), en el que el detector comprende al menos una región magnetoestrictiva activa (2) en el eje (1), un patrón de superficie sobre la región magnetoestrictiva (2), de manera que obtiene propiedades anisotrópicas, un primer medio (5) dispuesto para genera un campo magnético variable con el tiempo en la región magnetoestrictiva (2) y un segundo medio (9) dispuesto para detectar variaciones en la permeabilidad en la región magnetoestrictiva (2) y en el que dicha región magnetoestrictiva (2) comprende una primera capa (3) de un material magnetoestrictivo proporcionado sobre la superficie del eje (1) caracterizado por que dicho patrón de superficie está formado por una segunda capa (4) de un material no magnetoestrictivo que tiene una resistividad que es menor que la resistividad del material de la primera capa (3), en el que dicha primera capa (3) tiene un espesor que es mayor que la profundidad de penetración del material magnetoestrictivo y en el que dicha segunda capa (4) tiene un espesor que es menor que la profundidad de penetración en la primera capa y mayor que la profundidad de penetración multiplicada por el cociente entre la resistividad del material en la segunda capa (4) y la resistividad del material en la primera capa (3).

公开(公告)号：AT458188T

公开(公告)日：2010-03-15

申请号：AT00987906

申请日：2000-12-14

Applicant: ABB AB

Inventor： WALLIN CHRISTER ,  LING HANS ,  HASSEL LARS

IPC: G01L3/10 ,  H01L41/12

Abstract: The present invention relates to a magnetostrictive sensor for measuring a torque in a shaft. The sensor comprises at least one active magnetostrictive region on the shaft, a surface pattern in the magnetostrictive region such that it obtains anisotropic properties, a first means arranged to generate a magnetic field varying in time in the magnetostrictive region and a second means arranged to sense variation in the permeability in the magnetostrictive region. Said magnetostrictive region comprises a first layer of a magnetostrictive material which is provided on the surface of the shaft and that said surface pattern is formed by a second layer of a non-magnetostrictive material comprising a low resistivity.

公开(公告)号：SE529789C8

公开(公告)日：2007-12-27

申请号：SE0600543

申请日：2006-03-10

Applicant: ABB AB

Inventor： GUSTAFSSON PAER ,  LING HANS ,  MINIOTAS ANDRIUS ,  WANG MINGSHENG ,  WINTZELL HAAKAN

公开(公告)号：SE517710C2

公开(公告)日：2002-07-09

申请号：SE9904572

申请日：1999-12-14

Applicant: ABB AB

Inventor： WALLIN CHRISTER ,  LING HANS ,  HASSEL LARS

IPC: G01L3/10 ,  H01L41/12

Abstract: The present invention relates to a magnetostrictive sensor for measuring a torque in a shaft. The sensor comprises at least one active magnetostrictive region on the shaft, a surface pattern in the magnetostrictive region such that it obtains anisotropic properties, a first means arranged to generate a magnetic field varying in time in the magnetostrictive region and a second means arranged to sense variation in the permeability in the magnetostrictive region. Said magnetostrictive region comprises a first layer of a magnetostrictive material which is provided on the surface of the shaft and that said surface pattern is formed by a second layer of a non-magnetostrictive material comprising a low resistivity.

公开(公告)号：SE517238C2

公开(公告)日：2002-05-14

申请号：SE0003441

申请日：2000-09-27

Applicant: ABB AB

Inventor： SHAHCHERAGHI ROOZBEH ,  SOBEL JARL ,  BLOMKVIST KENT ,  LING HANS

IPC: G01L3/10

Abstract: A torque transducer for measuring torque transmitted in a rotating as well as a stationary shaft. The torque transducer comprises a transducer shaft 1 arranged with a cylinder-shaped magnetoelastic region 2 fixed to the cylindrical periphery of the transducer shaft, which cylinder-shaped magnetoelastic region is permanently magnetized in the azimuthal direction. The transducer shaft with the cylinder-shaped magnetoelastic region is surrounded by a winding 4 which is supplied by an alternating current. Further, the winding is connected to a phase-sensitive detector 5. According to the present invention, a magnetic and non-linear ferromagnetic material 3' is arranged in physical contact with the cylinder-shaped magnetoelastic region 2. The advantages are that the transducer shaft is manufactured independently of the magnetic properties of the shaft material and may substantially consist of a ferromagnetic material.