公开(公告)号：EP1238251A1

公开(公告)日：2002-09-11

申请号：EP00993336.7

申请日：2000-12-05

申请人： ROBERT BOSCH GMBH

发明人： HEISENBERG, David ,  KLOTZBUECHER, Thomas ,  HAAS, Gunther ,  DORFMUELLER, Lutz ,  SIEGLE, Henrik ,  WENZLER, Axel ,  MARX, Klaus ,  JOST, Franz ,  NOLTEMEYER, Ralf ,  FREITAG, Martin

IPC分类号： G01L3/12 ,  G01B7/30

CPC分类号： B62D15/0215 ,  B60G2204/11 ,  B62D6/10 ,  G01D5/2451 ,  G01L3/12 ,  G01L5/221 ,  G01M3/12 ,  G01P3/486 ,  G01P3/487

摘要： The invention relates to a device for measuring an angle and/or a torque on a rotatable body. The angle of rotation is detected by means of magnetic or optical sensors. In a preferred embodiment, two devices (7, 8) are provided that are provided with two optically readable code traces respectively. The two code traces (1a, 1b or 2a, 2b) of a device (7 or 8) are embodied in the same way and are arranged in such a way that said devices are offset against each other so that allocated sensors (4) output a digital signal. The angle of rotation is calculated from the offset of the two digital signals. In another embodiment, a torsional element (5) having a known torsional stiffness is arranged between the two devices (7, 8). A torque that is transmitted by the rotatable body (3) can thus by calculated from the difference angle of the two devices (7, 8). The inventive device is preferably used in the steering axle of a motor vehicle.

公开(公告)号：EP1567878B1

公开(公告)日：2008-02-27

申请号：EP03769233.2

申请日：2003-10-09

申请人： ROBERT BOSCH GMBH

发明人： MAY, Ulrich ,  FARBER, Paul ,  KITTEL, Hartmut ,  SIEGLE, Henrik ,  HERRMANN, Ingo ,  SCHMOLLNGRUBER, Peter

IPC分类号： G01R33/09

CPC分类号： B82Y25/00 ,  G01R33/093

摘要： The invention relates to a magnetoresistive sensor element (5) comprising a magnetoresistive system of layers (10), which is constructed according to the spin valve principle and operates on the basis of the GMR effect, at least some sections of said system being strip-shaped when viewed from above. Said strip-shaped system of layers (10) comprises a reference layer (35) with a magnetisation direction that remains practically unaffected by the direction of an external magnetic field acting on said system. During operation, the sensor element (5) provides a measuring signal, which, as a function of a measuring angle, fluctuates between the component of the field strength of the external magnetic field, said component lying on the plane of the system of layers (10), and the magnetisation direction, whereby the measuring angle can be determined from said signal. In addition, when the strip-shaped system of layers (10) is viewed from above, the angle formed by the magnetisation direction, in the absence of the external magnetic field, and the longitudinal direction of the strip-shaped system of layers (10) is adjusted in such a way that when the external magnetic field is acting with a defined field strength, selected from a predetermined working interval, the angular error of the system of layers (10) is practically minimal, as a function of said angle and the field strength. The invention also relates to a method for reducing the angular error of a magnetoresistive sensor element (5).

公开(公告)号：EP1358502B1

公开(公告)日：2005-10-26

申请号：EP02701230.1

申请日：2002-01-25

申请人： ROBERT BOSCH GMBH

发明人： GRUEN, Detlef ,  FISCHER, Frank ,  SIEGLE, Henrik ,  HEIN, Peter

IPC分类号： G01R33/09

CPC分类号： B82Y25/00 ,  G01R33/093

摘要： The invention relates to a method for the production of a GMR structure, wherein a metal multilayer (12) is placed on a support (10, 12, 30, 34) and said metal multilayer (14) is structured to produce a GMR structure. The support (10, 12, 30, 34) has a structure before the metal layer is placed thereon and structuring is performed by means of CMP. The invention also relates to a GMR structure comprised of a support (10, 12, 30, 34) and a structured metal multilayer that is arranged on said support (10, 12, 30, 34), wherein the structured metal multilayer (14) is arranged in one or several recesses (50) in the support (10, 12, 30, 34). The invention further relates to the use of GMR structures.

公开(公告)号：EP1527352A1

公开(公告)日：2005-05-04

申请号：EP03787612.5

申请日：2003-06-27

申请人： Robert Bosch GmbH

发明人： SCHMOLLNGRUBER, Peter ,  HERRMANN, Ingo ,  SIEGLE, Henrik ,  KITTEL, Hartmut ,  FARBER, Paul ,  MAY, Ulrich

IPC分类号： G01R33/09 ,  G01B7/30

CPC分类号： B82Y25/00 ,  F01L1/00 ,  F01L2101/00 ,  F01L2820/041 ,  G01R33/093

摘要： Disclosed is a GMR sensor element comprising a rotationally symmetrical arrangement of eight GMR resistor elements in particular which are interconnected to form two Wheatston full bridges. Said GMR sensor element is particularly suitable for use in an angle sensor for detection of the absolute position of the camshaft or crankschaft in a motor vehicle, especially in a camshaft-free engine with electric or electrohydraulic valve control, a motor position of an electrically commutated motor or detection of a windscreen wiper position or in a steering angle sensor system in motor vehicles.

公开(公告)号：EP2225586B1

公开(公告)日：2016-09-21

申请号：EP08861525.7

申请日：2008-10-21

申请人： Robert Bosch GmbH

发明人： VISEL, Benjamin ,  MARX, Klaus ,  SIEGLE, Henrik ,  STELLMANN, Georg ,  PLATZER, Joachim ,  JACKISCH, Sebastian ,  SCHNEIDER, Marcus

IPC分类号： G01S17/42 ,  G01C15/00

CPC分类号： G01S17/42 ,  G01C15/002

公开(公告)号：EP1567878A2

公开(公告)日：2005-08-31

申请号：EP03769233.2

申请日：2003-10-09

申请人： ROBERT BOSCH GMBH

发明人： MAY, Ulrich ,  FARBER, Paul ,  KITTEL, Hartmut ,  SIEGLE, Henrik ,  HERRMANN, Ingo ,  SCHMOLLNGRUBER, Peter

IPC分类号： G01R33/09

CPC分类号： B82Y25/00 ,  G01R33/093

摘要： The invention relates to a magnetoresistive sensor element (5) comprising a magnetoresistive system of layers (10), which is constructed according to the spin valve principle and operates on the basis of the GMR effect, at least some sections of said system being strip-shaped when viewed from above. Said strip-shaped system of layers (10) comprises a reference layer (35) with a magnetisation direction that remains practically unaffected by the direction of an external magnetic field acting on said system. During operation, the sensor element (5) provides a measuring signal, which, as a function of a measuring angle, fluctuates between the component of the field strength of the external magnetic field, said component lying on the plane of the system of layers (10), and the magnetisation direction, whereby the measuring angle can be determined from said signal. In addition, when the strip-shaped system of layers (10) is viewed from above, the angle formed by the magnetisation direction, in the absence of the external magnetic field, and the longitudinal direction of the strip-shaped system of layers (10) is adjusted in such a way that when the external magnetic field is acting with a defined field strength, selected from a predetermined working interval, the angular error of the system of layers (10) is practically minimal, as a function of said angle and the field strength. The invention also relates to a method for reducing the angular error of a magnetoresistive sensor element (5).

公开(公告)号：EP1527351A1

公开(公告)日：2005-05-04

申请号：EP03787611.7

申请日：2003-06-26

申请人： ROBERT BOSCH GMBH

发明人： SIEGLE, Henrik ,  RABE, Maik ,  MAY, Ulrich

IPC分类号： G01R33/09

CPC分类号： B82Y25/00 ,  G01R33/093 ,  G01R33/096

摘要： Disclosed is a magnetoresistive layer system (5), wherein a layer arrangement (15) is provided in the vicinity of a magnetoresistive layer stack (14), particularly one working on the basis of the GMR or AMR effect. Said layer arrangement produces a magnetic field, which acts upon the magnetoresistive layer stack (14), and contains at least one soft-magnetic layer (13). The invention also relates to a sensor element especially used for the detection of magnetic fields in relation to intensity and/or direction, comprising said layer system (5).

公开(公告)号：EP1399750A1

公开(公告)日：2004-03-24

申请号：EP02742751.7

申请日：2002-05-16

申请人： Robert Bosch GmbH

发明人： SCHMOLLNGRUBER, Peter ,  SIEGLE, Henrik

IPC分类号： G01R33/09 ,  G01R33/022

CPC分类号： B82Y25/00 ,  G01R33/093 ,  G01R33/096 ,  H01L43/08

摘要： A magneto-resistive layer arrangement (5) with a layer sequence (16), comprising at least two magnetic layers (12, 12') is disclosed, between which a non-magnetic electrically conducting intermediate layer (13) is arranged, whereby the electrical resistance of the layer arrangement (5) may change in relation to an external magnetic field acting on said layer arrangement (5). Furthermore, at least one magnetically hard layer (15) is at least partly integrated in the layer arrangement (5), affecting at least one region of a boundary region between the magnetic layers (12, 12') and the intermediate layer with a magnetic field. Said magneto-resistive layer arrangement (5) is particularly suitable for application in a GMR sensor element with coupled multi-layers or an AMR sensor element with a barbers-pole structure. In addition a gradiometer (30) with a number of said layer arrangements (5) is disclosed.

公开(公告)号：EP1314004A1

公开(公告)日：2003-05-28

申请号：EP01971624.0

申请日：2001-08-21

申请人： ROBERT BOSCH GMBH

发明人： HAAS, Gunther ,  SIEGLE, Henrik ,  HEISENBERG, David

IPC分类号： G01D18/00 ,  G01B7/30

CPC分类号： G01D5/145 ,  G01D18/008 ,  G01L3/104 ,  G01L3/109 ,  G01L3/12 ,  G01L5/221

摘要： The invention relates to a method for the computational correction of angular position measurements, using two coded wheels (1a, 1b). The method allows assembly and production errors, in particular, to be retrospectively corrected. The method is essentially characterised in that during an initial calibration, the errors of the input variables, or signals derived therefrom, are determined and stored by means of a reference angle sensor. The errors (Δα(ζ1), Δβ(ζ1)) are filtered using a Fourier analysis. During operation, the filtered errors are deducted from the measured angle values, depending on the rotational angle. This correction can be iteratively repeated, in such a way that the error angle is reduced to a minimum.

公开(公告)号：EP1314003A1

公开(公告)日：2003-05-28

申请号：EP01971625.7

申请日：2001-08-21

申请人： ROBERT BOSCH GMBH

发明人： HAAS, Gunther ,  SIEGLE, Henrik

IPC分类号： G01D5/16 ,  G01D5/245

CPC分类号： G01D5/145 ,  G01D5/2451

摘要： The invention relates to a magneto-resistive sensor for scanning a magnetic multipole wheel, said sensor scanning a large number of uniformly arranged magnetic pole pairs. The sensor has four magneto-resistive resistances, which are electrically connected as a Wheatstone-bridge comprising two half-bridges and emit a sinusoidal or cosinusoidal signal. To suppress the third and/or the fifth harmonic wave of the scanning signal, the distance between the two half-bridges is selected in such a way that it is not equal to half the wavelength (&lambda).