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公开(公告)号：EP4434833A2
公开(公告)日：2024-09-25
申请号：EP24192801.9
申请日：2022-08-24
Applicant: Dellner Bubenzer AB
Inventor： PRIM, Viktor
IPC: B60T13/74
CPC classification number: B60T13/746 , F16D55/2245 , F16D65/124 , B60T13/74
Abstract: An electrically operated brake assembly (200) for a rail vehicle contains: a rotating member mechanically linked to a wheel axle of the rail vehicle, at least one friction member (221; 222) movable between an engaged position in which the at least one friction member (221; 222) contacts the rotating member, and a disengaged position in which the rotating member is freely rotatable without contacting the at least one friction member (221; 222), a gear assembly (220) arranged to operate mechanically on the at least one friction member (221; 222), an electric motor (230) controllable via a control signal (CS) and configured to cause the gear assembly (220) to operate on the at least one friction member 221; 222) to move between the engaged and disengaged positions, a force sensor (225) configured to produce a pressure signal (F) indicating a magnitude of a force at which the at least one friction member (221; 222) contacts the rotating member, an angular position sensor (237) configured to produce a pulse-count signal (PC) where each pulse count reflects a particular angular movement of an output shaft of the electric motor (230) and a controller (120) configured to obtain the pressure signal (F) and the pulse count signal (PC), and based thereon define a home position for the electric motor (230).
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公开(公告)号：EP4434833A3
公开(公告)日：2024-11-06
申请号：EP24192801.9
申请日：2022-08-24
Applicant: Dellner Bubenzer AB
Inventor： PRIM, Viktor
IPC: B60T13/74
Abstract: An electrically operated brake assembly (200) for a rail vehicle contains: a rotating member mechanically linked to a wheel axle of the rail vehicle, at least one friction member (221; 222) movable between an engaged position in which the at least one friction member (221; 222) contacts the rotating member, and a disengaged position in which the rotating member is freely rotatable without contacting the at least one friction member (221; 222), a gear assembly (220) arranged to operate mechanically on the at least one friction member (221; 222), an electric motor (230) controllable via a control signal (CS) and configured to cause the gear assembly (220) to operate on the at least one friction member 221; 222) to move between the engaged and disengaged positions, a force sensor (225) configured to produce a pressure signal (F) indicating a magnitude of a force at which the at least one friction member (221; 222) contacts the rotating member, an angular position sensor (237) configured to produce a pulse-count signal (PC) where each pulse count reflects a particular angular movement of an output shaft of the electric motor (230) and a controller (120) configured to obtain the pressure signal (F) and the pulse count signal (PC), and based thereon define a home position for the electric motor (230).
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公开(公告)号：EP4275985A1
公开(公告)日：2023-11-15
申请号：EP22172518.7
申请日：2022-05-10
Applicant: Dellner Bubenzer AB
Inventor： PRIM, Viktor
Abstract: In a rail vehicle (100) a control unit (140) controls a set of brake/ traction units (101, 161; 102, 162; 103, 163; 104, 164) by control signals (B1, A1; B2, A2; B3, A3; B4, A4) to apply a respective brake/traction force to a respective wheel axle (131, 132, 133, 134 to cause retardation/acceleration of the rail vehicle (100). The control unit (140) obtains a first wheel speed signal (ω 1 ) indicating a rotational speed of at least one first wheel (121), and obtains a second wheel speed signal (ω a ) indicating an average rotational speed of at least one second wheel (122, 123, 124). The control unit (140) produces a first control signal (BF; A1) to the first brake/ traction unit (101, 161) such that this unit applies a gradually increasing brake/traction force to the first wheel axle (131) until an absolute difference (|ω 1 - ω a |) between the first and second wheel speed signals (ω 1 ; ω a ) exceeds a threshold value. In response to the absolute difference (|ω 1 - ω a |) exceeding the threshold value, the control unit (140) determines a parameter (µ m ) reflecting a friction coefficient (µ e ) between the wheels (121, 122, 123, 124) and a set of rails (181, 182) upon which the rail vehicle (100) travels.
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公开(公告)号：EP4261089A1
公开(公告)日：2023-10-18
申请号：EP22167947.5
申请日：2022-04-12
Applicant: Dellner Bubenzer AB
Inventor： PRIM, Viktor
Abstract: A rail vehicle (100) has a brake system with a brake unit (200) configured to receive a brake command (cmd B ) and in response thereto execute a brake action. The brake unit (200) contains a rotatable member (110) and first and second pressing members (211). The rotatable member (110) is mechanically linked to at least one wheel (105) of the rail vehicle (100). The first and second pressing members (211) are configured to move relative to the rotatable member (110) to execute the brake action. The brake unit (200) also contains a brake actuator (120) configured to produce an electric brake-force signal (BF) in response to the brake command (cmd B ), a gear assembly arranged to operate mechanically on the first and second pressing members (211) and an electric motor (230) configured to act on the gear assembly (220) in response to the electric brake-force signal (BF). The brake actuator (120), in turn, includes a processing unit (125) that is configured to produce the electric brake-force signal (BF) based on the brake command (cmd B ). Thus, the electric brake-force signal (BF) is efficiently protected from interfering electromagnetic radiation.
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5.发明公开
公开(公告)号：EP4474234A1
公开(公告)日：2024-12-11
申请号：EP23178362.2
申请日：2023-06-09
Applicant: Dellner Bubenzer AB
Inventor： SLUTEJ, Davor , PRIM, Viktor
Abstract: In a rail vehicle (100), a brake actuator (120) receives a brake command (BC) specifying a target force. In response to the brake command (BC), the brake actuator (120) control an electrically operated brake unit (130) to perform a braking operation. The brake actuator contains a control unit that generates a brake control signal (BS) based on the brake command (BC). The brake control signal (BS), in turn, controls an electric motor (131) in the electrically operated brake unit (130), such that an output shaft of the electric motor (131) attains a specified angular position (P) in which at least one pressing member (135) is caused to apply a force against a rotating member (136) being mechanically connected to a wheel axle (141) of the rail vehicle (100). The control unit also obtains first and second sensor signals (P m , FS). The first sensor signal (P m ) reflects a measured position of the output shaft of the electric motor (131), which measured position constitutes an indication of the specified angular position (P). The second sensor signal (FS) reflects a magnitude of the applied force. The control unit checks the second sensor signal (FS) against a force-to-position mapping describing a linear relationship between the specified angular position (P) and an estimated magnitude of the applied force. Thus, the control unit may verify the relationship between the specified angular position (P) and the estimated magnitude.
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Patent Agency Ranking
公开(公告)号：EP4360972A1
公开(公告)日：2024-05-01
申请号：EP22203753.3
申请日：2022-10-26
Applicant: Dellner Bubenzer AB
Inventor： PRIM, Viktor
IPC: B60T17/22 , B61H5/00 , F16D55/224 , F16D65/18 , B60T13/74
CPC classification number: B60T17/228 , B60T2270/41420130101 , B60T2270/40220130101 , F16D55/2245 , F16D65/18 , B60T13/741 , B60T13/665
Abstract: A rail vehicle brake unit (200) contains a brake actuator (120), at least one pressing member (211), a gear assembly (220), an electric motor (230) and a backup power unit (123). The brake actuator (120) receives a brake command (cmdB) and produces an electric brake-force signal (BF) to the electric motor (230) that, in turn, acts on the gear assembly (220) to cause the at least one pressing member (211) to attain a specified position in relation to a rotatable member (110) mechanically linked to at least one wheel (105) of a rail vehicle so as to apply a braking force thereto. During operation of the rail vehicle, the backup power unit (123) receives electric power (W) from a power line (140) in the rail vehicle and accumulates the received electric power (W). In case of an electric power failure (PF) in the electric power (W) received in the brake actuator (120), the backup power unit (123) provides the accumulated electric power to control circuitry in the brake actuator (120) and the electric motor (230).
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公开(公告)号：EP4303088A1
公开(公告)日：2024-01-10
申请号：EP22182891.6
申请日：2022-07-04
Applicant: Dellner Bubenzer AB
Inventor： PRIM, Viktor , LENNARTSSON, Svante
Abstract: A rail vehicle (100) has a number of wheel axles (131, 132, 133, 134) and a set of brake units (101, 102, 103, 104) applying respective brake forces to the wheel axles. A power signal (P m ) indicates the power needed to accelerate the rail vehicle (100) between first and second speeds (v 1 ; v 2 ) indicated by a speed signal. Based thereon an overall weight (m tot ) of the rail vehicle (100) is estimated. Wheel speed signals indicate respective speeds (ω 1 , ω 2 , ω 3 , ω 4 ) of the wheel axles (131, 132, 133, 134). A brake unit (101) gradually applies an increasing brake force to a specific wheel axle (131). During braking, an absolute difference (| ω 1 - ω a |) is determined between the rotational speed of the specific wheel axle (131) and an average rotational speed (ω a ) of the other wheel axles and in response to the absolute difference exceeding a threshold value, a friction parameter (µ m ) is determined reflecting a friction coefficient (µ e ) between the wheels (121a, 121b) on the specific wheel axle (131) and the rails (181, 182) upon which the rail vehicle (100) travels. The braking procedure is repeated for each of the wheel axles to estimate a respective fraction (m 1 , m 2 , m n ) of the overall weight (m tot ) carried by each of said wheel axles.
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公开(公告)号：EP4434832A2
公开(公告)日：2024-09-25
申请号：EP24192798.7
申请日：2022-08-24
Applicant: Dellner Bubenzer AB
Inventor： PRIM, Viktor
IPC: B60T13/74
CPC classification number: B60T13/746 , F16D55/2245 , F16D65/124 , B60T13/74
Abstract: An electrically operated brake assembly (200) for a rail vehicle contains: a rotating member mechanically linked to a wheel axle of the rail vehicle, at least one friction member (221; 222) movable between an engaged position in which the at least one friction member (221; 222) contacts the rotating member, and a disengaged position in which the rotating member is freely rotatable without contacting the at least one friction member (221; 222), a gear assembly (220) arranged to operate mechanically on the at least one friction member (221; 222), an electric motor (230) controllable via a control signal (CS) and configured to cause the gear assembly (220) to operate on the at least one friction member 221; 222) to move between the engaged and disengaged positions, a force sensor (225) configured to produce a pressure signal (F) indicating a magnitude of a force at which the at least one friction member (221; 222) contacts the rotating member, an angular position sensor (237) configured to produce a pulse-count signal (PC) where each pulse count reflects a particular angular movement of an output shaft of the electric motor (230) and a controller (120) configured to obtain the pressure signal (F) and the pulse count signal (PC), and based thereon define a home position for the electric motor (230).
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公开(公告)号：EP4336063A1
公开(公告)日：2024-03-13
申请号：EP22194454.9
申请日：2022-09-07
Applicant: Dellner Bubenzer AB
Inventor： PRIM, Viktor
IPC: F16D66/02
Abstract: An electrically operated brake assembly for a rail vehicle contains: a rotating member mechanically linked to a wheel axle of the rail vehicle, at least one friction member movable between an engaged position in which the friction member(s) contact/s the rotating member and a disengaged position in which the rotating member is freely rotatable, a gear assembly operating mechanically on the friction member(s), an electric motor controlled via a control signal to cause the gear assembly to operate on the friction member(s) to move between the engaged and disengaged positions, and a controller generating the control signal. When generating the control signal (710), the controller obtains a pulse-count signal (720) and a pressure signal (730). The pulse-count signal reflects an angular movement of an output shaft of the electric motor, and the pressure signal indicates a magnitude of a force experienced in the gear assembly when the friction member(s) is/are located in the engaged position and/or the disengaged position. Based on the pressure and pulse count signals, the controller checks if an alarm criterion is fulfilled (740) with respect to a wear of the friction member(s), and if so, triggers an alarm (750).
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公开(公告)号：EP4306384A1
公开(公告)日：2024-01-17
申请号：EP22184280.0
申请日：2022-07-12
Applicant: Dellner Bubenzer AB
Inventor： PRIM, Viktor
IPC: B61L15/00
Abstract: A rail vehicle (100) obtains a basic parameter (µ) reflecting an initial value of a friction coefficient (µ e ) relating to a rail segment (310) in a rail-way network (300) and validates the basic parameter (µ) through a procedure involving: measuring individual rotational speeds (ω 1 , ω 2 , ω 3 , ω 4 ) of the axels to which the wheels (151, 152, 153, 154) of the rail vehicle (100) are connected while applying a gradually increasing brake force (BF) to a specific one of said axles; determining, while applying the gradually increasing brake force (BF), an absolute difference between the rotational speed (ω 2 ) of the specific one of said axles and an average rotational speed of said axles except the specific one of said axles; and in response to the absolute difference exceeding a threshold value deriving a parameter (µ m ) reflecting a measured value of the friction coefficient (µ e ); checking whether the measured value of the friction coefficient (µ e ) lies within an acceptance interval from the basic parameter (µ); and if so, assigning the validated value of the friction coefficient equal to the measured value of the friction coefficient (µ e ). Then, a friction data message (M(µe)) is emitted that contains the validated value of the friction coefficient.
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