公开(公告)号：US11088598B2

公开(公告)日：2021-08-10

申请号：US16069172

申请日：2016-11-23

Applicant: FRABA B.V.

Inventor： Martin Forthaus ,  Michael Loeken

IPC: H02K11/01 ,  H02K11/215 ,  G01D11/24 ,  G01D5/12 ,  H02K7/102

Abstract: An arrangement of a magnet-based rotational angle measuring system on a drive motor housing part. The arrangement includes the drive motor housing part, a drive shaft with a free end which extends out of the drive motor housing part, an exciter unit connected to the free end of the drive shaft to rotate therewith, a stationary sensor unit which cooperates with the exciter unit to detect a rotary movement of the drive shaft, a shielding body arranged between the stationary sensor unit and the drive motor housing part, and an alignment element which directly aligns the stationary sensor unit with respect to the drive motor housing part.

公开(公告)号：US12111183B2

公开(公告)日：2024-10-08

申请号：US17639911

申请日：2019-09-05

Applicant: FRABA B.V.

Inventor： Michael Loeken ,  Carmen Alejandro Sanchez Gonzalez

IPC: G01D11/24 ,  G01D5/14 ,  G01D5/20

CPC classification number: G01D11/245 ,  G01D5/14 ,  G01D5/142 ,  G01D5/147 ,  G01D5/20

Abstract: A rotary angle measuring arrangement includes a shaft, and a rotary angle measuring system which detects a rotary shaft movement. The rotary angle measuring system includes an excitation unit connected to the shaft which generates a magnetic field, a magnetic field sensor, a PCB arrangement, and an evaluation electronics arranged on the PCB arrangement and electrically connected to the magnetic field sensor. The PCB arrangement includes a first PCB section arranged perpendicular to a longitudinal axis of the shaft, and a second PCB section angled with respect to the first PCB section and electrically connected thereto. The magnetic field sensor is arranged on the first PCB section. The magnetic field is detectable via the magnetic field sensor. A parallel projection of the second PCB section onto a longitudinal plane parallel to the longitudinal axis and a parallel projection of the excitation unit onto the longitudinal plane at least partially overlap.

公开(公告)号：US11674973B2

公开(公告)日：2023-06-13

申请号：US17428282

申请日：2019-02-06

Applicant: FRABA B.V.

Inventor： Michael Loeken

IPC: G01P3/481 ,  G01R33/02

CPC classification number: G01P3/4815 ,  G01R33/02

Abstract: A magnetic-field sensor device includes at least two impulse wires, a coil assembly which radially surrounds the at least two impulse wires, the coil assembly defining a sensor element and a feedback element which generates an auxiliary magnetic field, an energy storage which is electrically connected to the coil assembly, a switching element which is electrically connected to the energy storage and to the feedback element, and a control unit which electrically controls the switching element.

公开(公告)号：US11662201B2

公开(公告)日：2023-05-30

申请号：US17439408

申请日：2019-03-19

Applicant: FRABA B.V.

Inventor： Michael Loeken ,  Michael Fink

IPC: G01B11/26 ,  G01B7/30

CPC classification number: G01B11/26 ,  G01B7/30

Abstract: A calibration apparatus for a rotational angle measuring system includes a measuring system shaft and a measuring system housing. The calibration apparatus includes a shaft holding device which, in a calibration position, rotates about an axis of rotation and is co-rotatably connected to the measuring system shaft, and, in a load position, is decoupled from the measuring system shaft, a rotationally static housing holding device which, in the calibration position, is co-rotatably connected to the measuring system housing, and, in the load position, is decoupled from the measuring system housing, and a drive motor which drives the shaft holding device. In the calibration position, the shaft holding device has clamping jaws which are pressable onto the radial outer side of the measuring system shaft, and/or, the rotationally static housing holding apparatus has movable pistons which are pressable onto the radial outer side of the measuring system housing.

公开(公告)号：US11913818B2

公开(公告)日：2024-02-27

申请号：US17619259

申请日：2020-06-15

Applicant: FRABA B.V.

Inventor： Michael Loeken ,  Matthias Lansing ,  Florian Hallermann

IPC: G01F15/061 ,  G01F1/075 ,  G01F15/06 ,  G01P3/481

CPC classification number: G01F15/061 ,  G01F1/075 ,  G01F15/065 ,  G01P3/4815

Abstract: A sensor device includes an excitation magnet which generates an alternating excitation magnetic field, an energy generator having a pulse wire module in which electric energy pulses are generatable via the alternating excitation magnetic field, at least one sensor element which senses a physical variable and which provides a sensor signal, an evaluation unit which evaluates the sensor signal, and a wireless data interface which is connected to the evaluation unit via a data connection. The at least one sensor element and the evaluation unit are each electrically connected to the energy generator and are suppliable with an electric energy thereby.

公开(公告)号：US11650086B2

公开(公告)日：2023-05-16

申请号：US16326711

申请日：2017-08-15

Applicant: FRABA B.V.

Inventor： Michael Loeken ,  Uwe Kettering

IPC: G01D18/00

CPC classification number: G01D18/001

Abstract: A method for calibrating a rotary encoder for capturing rotational angle position of a machine shaft. The rotary encoder includes an exciter unit which is rotationally fixed to the machine shaft, and a stationary sensor unit which interacts therewith. The method includes rotating the machine shaft to perform a rotational movement at a predefined rotational speed at a first sensor temperature, capturing a first position measured value at a first predefined rotational angle position at the first sensor temperature, heating or cooling the sensor unit to a second sensor temperature, capturing a second position measured value at the first predefined rotational angle position at the second sensor temperature, determining a first deviation between at least the second position measured value and a first desired position measured value, and correcting an output signal from the rotary encoder via the first deviation.

公开(公告)号：US11525663B2

公开(公告)日：2022-12-13

申请号：US17261031

申请日：2018-07-20

Applicant: FRABA B.V.

Inventor： Michael Loeken ,  Florian Hallermann ,  Hanno Volker

IPC: G01B7/30 ,  G01D5/14 ,  G01D5/20 ,  G01D5/24

Abstract: A rotation angle measurement system for detecting a rotation of a shaft. The rotation angle measurement system includes the shaft which extends in an axial direction, a rotor unit having a sensor magnet, a stationary stator unit having a multi-turn sensor unit which is arranged radially spaced apart from the shaft and which has a Wiegand sensor, and a magnetic shielding arrangement for the Wiegand sensor. The rotor unit is connected to the shaft to rotate therewith and radially surrounds the shaft. The multi-turn sensor unit functionally interacts with the sensor magnet to detect revolutions thereof. The magnetic shielding arrangement is made from a material having a high magnetic permeability. The magnetic shielding arrangement includes shielding elements which are arranged to surround the Wiegand sensor on a radial inside, on a radial outside, on a first axial side, and on a second axial side thereof.

公开(公告)号：US11268835B2

公开(公告)日：2022-03-08

申请号：US16618111

申请日：2017-05-31

Applicant: FRABA B.V.

Inventor： Michael Loeken

IPC: G01D11/24 ,  G01D5/244

Abstract: A sensor unit for a rotational angle measurement system for detecting a rotational movement of a drive shaft includes a housing arrangement with a pot-shaped housing part, a carrier member, a sensor printed circuit board arranged on the carrier member, and a bearing which, in an operating state, mounts the sensor printed circuit board in a stationary manner in the housing arrangement with respect to the drive shaft. The bearing is a form fit/force fit arrangement so that the carrier member is movably mounted in the housing arrangement in a pre-assembled state.