公开(公告)号：US11038410B2

公开(公告)日：2021-06-15

申请号：US16890887

申请日：2020-06-02

Applicant: Beckhoff Automation GmbH

Inventor： Rolf Brinkmann ,  Lukas Bentfeld ,  Jörg Neufeld

IPC: H02K41/03 ,  H02K11/215 ,  H02K5/18 ,  H02K9/18 ,  H02K9/22

Abstract: A stator module is disclosed, and a planar drive system with a stator module. The stator module has a lower face opposite an upper face, a stator unit situated on the upper face, and a cooling unit. The stator unit has a coil to which current can be supplied to generate a magnetic field to drive a mover, positionable on the upper face of the stator module. The cooling unit has a cover thermally connected to a lower face of the stator unit and to the bottom of the housing. The bottom of the housing has a first fastening section on the lower face of the stator module, thermally connectable to a heat sink. The cover is designed to conduct heat out of the stator unit to the bottom of the housing, which is designed to conduct the heat at least partially to the first fastening section.

公开(公告)号：US20210099068A1

公开(公告)日：2021-04-01

申请号：US17121219

申请日：2020-12-14

Applicant: Beckhoff Automation GmbH

Inventor： Rolf Brinkmann ,  Uwe Prüssmeier ,  Lukas Bentfeld

IPC: H02K41/03 ,  H02K3/28 ,  H02K3/47 ,  H01F27/28 ,  H02P25/06

Abstract: A stator assembly for a planar electrical motor includes coil conductors arranged in a stator layer, elongated in a first direction and arranged side by side in a second direction perpendicular to the first direction. The coil conductors are connected to form a three-phase system, with a first forward conductor a nnd first return conductor of the first phase connected in series to the first forward conductor, a second forward conductor and second return conductor of the second phase connected in series with the second forward conductor, and a third forward conductor and third return conductor of the third phase connected in series with the third forward conductor. The three-phase system has first and second opposite sides. The first forward conductor and the first return conductor are electroconductively connected in series by first and second horizontal connecting conductors arranged in the stator layer on the second and first side, respectively.

公开(公告)号：US20210091622A1

公开(公告)日：2021-03-25

申请号：US17116532

申请日：2020-12-09

Applicant: Beckhoff Automation GmbH

Inventor： Rolf Brinkmann ,  Lukas Bentfeld ,  Uwe Prüssmeier

IPC: H02K3/47 ,  H02K41/03

Abstract: A stator assembly for driving a rotor of an electrical planar motor includes a first arrangement of longitudinal stator layers and a second arrangement of oblique stator layers. The longitudinal stator layers comprise first coil conductors and the oblique stator layers comprise second coil conductors. The second coil conductors interact with second drive magnets to drive the rotor in a first direction, and the first coil conductors interact with first drive magnets to drive the rotor in a second direction, different from the first direction. The longitudinal and oblique stator layers are arranged on top of one another in a third direction, perpendicular to the first and second directions, where the first arrangement of longitudinal stator layers and the second arrangement of oblique stator layers have a shared central plane, each being symmetrically arranged with regard to the shared central plane, in the third direction.

公开(公告)号：US12212191B2

公开(公告)日：2025-01-28

申请号：US17886750

申请日：2022-08-12

Applicant: Beckhoff Automation GmbH

Inventor： Lukas Bentfeld ,  Rolf Brinkmann ,  Patrick Jebramcik ,  Tim Kaulmann

IPC: H02K11/27 ,  H02K1/22 ,  H02K1/272 ,  H02K21/04 ,  H02K41/02

Abstract: A planar drive system comprises a stator and a rotor. The stator comprises a plurality of stator conductors. The rotor comprises a magnet device comprising at least one rotor magnet. The stator is configured to energize the stator conductors. A magnetic interaction can be produced between energized stator conductors of the stator and the magnet device of the rotor in order to drive the rotor. The stator is configured to carry out the energizing of the stator conductors by a current control based on a pulse-width modulation. Due to the current control, a ripple current in energized stator conductors of the stator and thereby an alternating magnetic field can be generated. The rotor comprises at least one rotor coil in which an alternating voltage can be induced due to the alternating magnetic field.

公开(公告)号：US12088168B2

公开(公告)日：2024-09-10

申请号：US17900339

申请日：2022-08-31

Applicant: Beckhoff Automation GmbH

Inventor： Klaus Neumann ,  Lukas Bentfeld ,  Keir Maguire ,  Tim Kaulmann ,  Benjamin Jurke

IPC: H02K41/03 ,  H02K11/215 ,  H02P23/00

CPC classification number: H02K41/031 ,  H02K11/215 ,  H02P23/0018 ,  H02K2213/03

Abstract: A method for controlling a planar drive system includes generating a position allocating function, in an allocation generating step; measuring a plurality of measuring values of the magnetic rotor field by magnetic field sensors for a position of the rotor relative to the stator module, in a magnetic rotor field determining step; applying the position determination function to the plurality of measuring values of the magnetic rotor field of the plurality of magnetic field sensors, in a measuring value analysis step; and determining the position of the rotor relative to the stator module on the basis of the measurements of the magnetic rotor field measured by the plurality of magnetic field sensors and based on the allocations of the position allocating function, in a position determining step. The application further relates to such a planar drive system.

公开(公告)号：US20240266979A1

公开(公告)日：2024-08-08

申请号：US18638344

申请日：2024-04-17

Applicant: Beckhoff Automation GmbH

Inventor： Johannes Beckhoff ,  Felix Schulte ,  Jan Achterberg ,  Uwe Prüßmeier ,  Lukas Bentfeld

IPC: H02P25/064 ,  H02K41/03

CPC classification number: H02P25/064 ,  H02K41/031 ,  H02K2201/18

Abstract: A planar drive system includes a stator module and a rotor. The stator module has a stator assembly with at least one coil arrangement that can be energized to generate a stator magnetic field above a stator surface, and a magnetic field sensor. The rotor has a magnet arrangement and can be moved above the stator surface via interaction between the stator magnetic field the magnet arrangement. The rotor can be used as an input device or output device, or both. A controller can compare the position of the rotor magnetic field detected with the sensor to the position expected based on energization of the coil arrangement, to determine any deviation of the expected position as an external movement, and to recognize an input thereby. The controller can control an output via a predetermined movement of the rotor, and to energize the coil arrangement so the rotor moves as defined.

公开(公告)号：US20230072018A1

公开(公告)日：2023-03-09

申请号：US17988069

申请日：2022-11-16

Applicant: Beckhoff Automation GmbH

Inventor： Lukas Bentfeld ,  Rolf Brinkmann ,  Patrick Jebramcik ,  Tim Kaulmann

IPC: H02K19/14 ,  H02K41/03 ,  H02K47/04 ,  H02P25/064 ,  H02P27/08

Abstract: A planar drive system comprises a stator and a rotor. The stator comprises a plurality of energizable stator conductors. The rotor comprises a magnet device having at least one rotor magnet. A magnetic interaction can be produced between energized stator conductors of the stator and the magnet device in order to drive the rotor. The stator is configured to carry out energization of the stator conductors so that an alternating magnetic field can be generated via the energized stator conductors. The rotor comprises at least one rotor coil in which an alternating voltage can be induced due to the alternating magnetic field. The planar drive system is configured to transmit data from the rotor to the stator, and the rotor is configured to temporarily load the at least one rotor coil to temporarily cause increased current consumption of the energized stator conductors of the stator.

公开(公告)号：US20230071070A1

公开(公告)日：2023-03-09

申请号：US17988079

申请日：2022-11-16

Applicant: Beckhoff Automation GmbH

Inventor： Lukas Bentfeld ,  Rolf Brinkmann ,  Patrick Jebramcik ,  Tim Kaulmann

IPC: H02P6/10 ,  H02P6/00 ,  H02P25/064

Abstract: A planar drive system comprises a stator and a rotor. The stator comprises a plurality of energizable stator conductors. The rotor comprises a magnet device having at least one rotor magnet. A magnetic interaction can be produced between energized stator conductors of the stator and the magnet device to drive the rotor. The stator is configured to carry out energization of the stator conductors so that an alternating magnetic field can be generated via the energized stator conductors. The rotor comprises at least one rotor coil in which an alternating voltage can be induced due to the alternating magnetic field. The planar drive system is configured to transmit data from the stator to the rotor, and the stator is configured to temporarily influence the energization of the stator conductors in order to temporarily cause a change with respect to the alternating voltage induced in the at least one rotor coil.

公开(公告)号：US11437893B2

公开(公告)日：2022-09-06

申请号：US16897985

申请日：2020-06-10

Applicant: Beckhoff Automation GmbH

Inventor： Rolf Brinkmann ,  Lukas Bentfeld ,  Uwe Pruessmeier

IPC: H02K11/21 ,  H02K11/215 ,  G01R33/00 ,  G01R33/02 ,  G01R33/07 ,  H02K1/20

Abstract: A planar-drive system includes a rotor and stator module with a housing, a stator assembly for driving the rotor, and a sensor module for detecting the rotor position. The sensor module has a 2D arrangement of magnetic-field sensors arranged on a carrier in first and second periodic grids, extending in first and second directions. Adjacent magnetic-field sensors are arranged at first and second distances in the first and second directions. The grids are shifted by a vector having first and second components smaller than the respective first and a second distances. The rotor has first and second magnet units, each with an arrangement of magnets with first and second periodic lengths aligned in the first and second directions. The first and second components of the vector, and a difference between the first and second distances and the respective components, are each smaller than the respective first and second periodic lengths.

公开(公告)号：US20200304010A1

公开(公告)日：2020-09-24

申请号：US16896650

申请日：2020-06-09

Applicant: Beckhoff Automation GmbH

Inventor： Rolf Brinkmann ,  Lukas Bentfeld ,  Uwe Pruessmeier

IPC: H02K41/03

Abstract: A stator module for two-dimensionally driving a rotor having first and second magnet units comprises a stator assembly including first and second stator segments for interacting with drive magnets of the first and second magnet units. The individual stator segments may each be energized independently from the remaining stator segments. The stator assembly comprises first, second, third and fourth stator sectors. The first stator segments of the individual stator sectors each extend in a second direction over all second stator segments of the relevant stator sector arranged side by side, and the second stator segments of the individual stator sectors each extend in a first direction over all first stator segments of the relevant stator sector arranged side by side. Extensions of the stator sectors in the first and second directions are respectively smaller than extensions of a magnet arrangement comprising the magnet units.