CA3252995A1 - Railway braking system for a railway vehicle, and railway vehicle provided with such a system - Google Patents
Railway braking system for a railway vehicle, and railway vehicle provided with such a systemInfo
- Publication number
- CA3252995A1 CA3252995A1 CA3252995A CA3252995A CA3252995A1 CA 3252995 A1 CA3252995 A1 CA 3252995A1 CA 3252995 A CA3252995 A CA 3252995A CA 3252995 A CA3252995 A CA 3252995A CA 3252995 A1 CA3252995 A1 CA 3252995A1
- Authority
- CA
- Canada
- Prior art keywords
- nodes
- charge density
- electric potential
- values
- error
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
- F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
- F16D55/2245—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members in which the common actuating member acts on two levers carrying the braking members, e.g. tong-type brakes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/665—Electrical control in fluid-pressure brake systems the systems being specially adapted for transferring two or more command signals, e.g. railway systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
- B60T17/228—Devices for monitoring or checking brake systems; Signal devices for railway vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H13/00—Actuating rail-vehicle brakes
- B61H13/34—Details
- B61H13/38—Suspension of transmitting mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H5/00—Applications or arrangements of brakes with substantially radial braking surfaces pressed together in axial direction, e.g. disc brakes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/005—Components of axially engaging brakes not otherwise provided for
- F16D65/0056—Brake supports
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
- F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D2055/0004—Parts or details of disc brakes
- F16D2055/0008—Brake supports
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/18—Mechanical mechanisms
- F16D2125/58—Mechanical mechanisms transmitting linear movement
- F16D2125/68—Lever-link mechanisms, e.g. toggles with change of force ratio
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Braking Arrangements (AREA)
Abstract
Description
Claims (9)
- WO 2023/220814 PCT/CA2023/050664 WHAT IS CLAIMED IS: 1. A computer-implemented method of simulating the behaviour of an electronic device in the context of given boundary conditions, the behavior including a charge density distribution and an electric potential distribution over a geometry of the electronic device, the method comprising : providing a mesh having nodes spatially distributed across a geometrical model of the electronic device; calculating, taking into consideration the boundary conditions imposed to some of the nodes, and for each of the remaining ones of the nodes, i) current values of electric potential using a linearization of a non-linear Poisson equation, and ii) current values of charge density using a charge density model, wherein the current values of a first one of electric potential and of charge density are calculated further based on starting values of a second one of electric potential and of charge density, and the current values of the second one is calculated further based on the current values of the first one; determining an error for the current values; when the error is not within an error threshold, changing the spatial distribution of the nodes to a current spatial distribution of nodes, and repeating said steps of calculating and determining i) using the current values previously calculated as the starting values and ii) using the current spatial distribution of nodes for the nodes; and when the error is within the error threshold, outputting the current values of electric potential and charge density as a simulated behaviour of the electronic device.
- 2. The computer-implemented method of claim 1 wherein said calculating includes calculating the current values of charge density first, based on starting values of electric potential, and subsequently calculating the current values of the electric potential, using the calculated current values of charge density. 32WO 2023/220814 PCT/CA2023/050664
- 3. The computer-implemented method of claim 1 wherein said determining an error for the current values includes determining a precision error between the starting values and the current values.
- 4. The computer-implemented method of claim 1 further comprising determining an accuracy errorforthe current values, wherein the step ofchanging the spatial distribution of the nodes includes densifying the spatial distribution of the nodes in regions having a larger accuracy error.
- 5. The computer-implemented method of claim 4 wherein the step ofchanging the spatial distribution of the nodes includes determining a target accuracy error which is lower than the accuracy error, and densifying the spatial distribution of the nodes in regions having a larger accuracy error compared to the target accuracy error.
- 6. The computer-implemented method of claim 5 wherein the mesh is a finite element mesh, the accuracy error is an accuracy error for elements of the mesh, determining the accuracy error includes using SCPRT, and determining the target accuracy error includes computing eta.
- 7. The computer-implemented method of claim 1 wherein, when the precision error is not within the precision error threshold, determining whether the precision error is converging or not converging, and wherein the steps ofchanging the spatial distribution of the nodes is contingent upon determining that the precision error is not converging.
- 8. A computer implemented method of determining the behaviour of an electronic device in predetermined conditions, the behavior including a charge density distribution and an electric potential distribution over a geometry of the electronic device, the method comprising : providing an initial mesh having nodes distributed across a geometric model of the electronic device, each node having an initial spatial coordinates corresponding to a location forming part of the geometric model; providing a charge density model; 33WO 2023/220814 PCT/CA2023/050664 provide a non-linear Poisson equation of the form V(eV</>) = -p, where £ is the dielectric permittivity of each one of the nodes, <p is the electric potential of each one of the nodes, and p is the charge density of each one of the nodes, and where both the electric potential and the charge density are i) both a priori unknown and ii) related to one another based on the charge density model; providing a linearization of the non-linear Poisson equation; providing boundary conditions having set values of charge density and electric potential for some of the nodes; providing an initial values of a first one of electric potential and charge density for remaining ones of the nodes; providing a precision error threshold; calculating a values of the second one of electric potential and charge density for the remaining ones of the nodes; calculating a subsequent values of the first one of electric potential and charge density for remaining ones of the nodes; wherein said calculating values for charge density includes using the charge density model, and calculating values for the electric potential uses the linearization of the non-linear Poisson equation; calculate a precision error between the initial values and the subsequent values; when the precision error is within the threshold, outputting the latest calculated values of electric potential and charge density; and when the precision error is not within the threshold, generating a subsequent mesh with a different spatial distribution of nodes than the distribution of nodes of the initial mesh, and repeating the steps of calculating using the 34WO 2023/220814 PCT/CA2023/050664 latest calculated value of electric potential or charge density as the initial value of electric potential and charge density.
- 9. A computer-implemented method of simulating the behaviour of a composition of matter in the context of given boundary conditions, the behavior including a charge density distribution and an electric potential distribution over a geometry of the composition of matter, the method comprising : providing a mesh having nodes spatially distributed across a geometrical model of the composition of matter; calculating, taking into consideration the boundary conditions imposed to some of the nodes, and for each of the remaining ones of the nodes, i) current values of electric potential using a linearization of a non-linear Poisson equation, and ii) current values of charge density using a charge density model, wherein the current values of a first one of electric potential and of charge density are calculated further based on starting values of a second one of electric potential and of charge density, and the current values of the second one is calculated further based on the current values of the first one; determining a precision error between the starting values and the current values; when the precision error is not within a precision error threshold, changing the spatial distribution of the nodes to a current spatial distribution of nodes, and repeating said steps of calculating and determining i) using the current values previously calculated as the starting values and ii) using the current spatial distribution of nodes for the nodes; and when the precision error is within an precision error threshold, outputting the current values of electric potential and charge density as a simulated behaviour of the composition of matter. 35
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2204568A FR3135435A1 (fr) | 2022-05-13 | 2022-05-13 | Système de freinage ferroviaire pour véhicule ferroviaire et véhicule ferroviaire pourvu d’un tel système |
| FRFR2204568 | 2022-05-13 | ||
| PCT/FR2023/050688 WO2023218152A1 (fr) | 2022-05-13 | 2023-05-12 | Système de freinage ferroviaire pour véhicule ferroviaire et véhicule ferroviaire pourvu d'un tel système |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA3252995A1 true CA3252995A1 (fr) | 2023-11-16 |
Family
ID=82196735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3252995A Pending CA3252995A1 (fr) | 2022-05-13 | 2023-05-12 | Railway braking system for a railway vehicle, and railway vehicle provided with such a system |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20250314275A1 (fr) |
| EP (1) | EP4522883A1 (fr) |
| CN (1) | CN119213235A (fr) |
| AU (1) | AU2023268713A1 (fr) |
| CA (1) | CA3252995A1 (fr) |
| FR (1) | FR3135435A1 (fr) |
| WO (1) | WO2023218152A1 (fr) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1238023A (fr) * | 1967-09-18 | 1971-07-07 | ||
| CN107200036A (zh) * | 2017-06-19 | 2017-09-26 | 中车青岛四方车辆研究所有限公司 | 制动夹钳连接装置 |
| EP3540258B1 (fr) * | 2018-03-12 | 2023-04-26 | KNORR-BREMSE Systeme für Schienenfahrzeuge GmbH | Agencement de dispositif de barre de traction d'un étrier de frein et étrier de frein |
-
2022
- 2022-05-13 FR FR2204568A patent/FR3135435A1/fr active Pending
-
2023
- 2023-05-12 CN CN202380040218.7A patent/CN119213235A/zh active Pending
- 2023-05-12 WO PCT/FR2023/050688 patent/WO2023218152A1/fr not_active Ceased
- 2023-05-12 AU AU2023268713A patent/AU2023268713A1/en active Pending
- 2023-05-12 EP EP23730159.3A patent/EP4522883A1/fr active Pending
- 2023-05-12 CA CA3252995A patent/CA3252995A1/fr active Pending
- 2023-05-12 US US18/864,934 patent/US20250314275A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US20250314275A1 (en) | 2025-10-09 |
| FR3135435A1 (fr) | 2023-11-17 |
| WO2023218152A1 (fr) | 2023-11-16 |
| CN119213235A (zh) | 2024-12-27 |
| EP4522883A1 (fr) | 2025-03-19 |
| AU2023268713A1 (en) | 2025-01-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
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