EP3645355A1 - Sensoranordnung und verfahren zum ermitteln einer bremskraft - Google Patents
Sensoranordnung und verfahren zum ermitteln einer bremskraftInfo
- Publication number
- EP3645355A1 EP3645355A1 EP18742400.7A EP18742400A EP3645355A1 EP 3645355 A1 EP3645355 A1 EP 3645355A1 EP 18742400 A EP18742400 A EP 18742400A EP 3645355 A1 EP3645355 A1 EP 3645355A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- force
- vehicle
- braking
- brake
- sensor
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 27
- 230000001419 dependent effect Effects 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims description 19
- 238000005259 measurement Methods 0.000 claims description 18
- 238000012544 monitoring process Methods 0.000 claims description 18
- 238000005096 rolling process Methods 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 4
- 238000009420 retrofitting Methods 0.000 claims description 4
- 238000004590 computer program Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims description 2
- 238000003745 diagnosis Methods 0.000 claims description 2
- 230000033001 locomotion Effects 0.000 description 9
- 239000000725 suspension Substances 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000003825 pressing Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008034 disappearance Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000003442 weekly effect Effects 0.000 description 1
Classifications
-
- 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
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2009—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for braking
- B60L15/2018—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for braking for braking on a slope
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2072—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for drive off
- B60L15/2081—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for drive off for drive off on a slope
-
- 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
- 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
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
- B60T7/122—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger for locking of reverse movement
-
- 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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/1701—Braking or traction control means specially adapted for particular types of vehicles
- B60T8/1705—Braking or traction control means specially adapted for particular types of vehicles for rail vehicles
-
- 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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/172—Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
-
- 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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/52—Torque sensing, i.e. wherein the braking action is controlled by forces producing or tending to produce a twisting or rotating motion on a braked rotating member
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/28—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for testing brakes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
-
- 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
- B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
- B60T2201/06—Hill holder; Start aid systems on inclined road
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Definitions
- the present invention relates to a sensor arrangement and a method for determining a braking force of a braking device of a vehicle.
- the invention relates to a sensor in a support member (e.g., support rod) of a hinged brake force generator to detect a circumferential force or braking torque of the caliper.
- a (measuring) support member for a disc brake e.g., support rod
- unwanted braking effects should be excluded or desired braking effects should be monitored as permanently as possible.
- brake data such as the brake pressure or the brake current is monitored via a brake sensor device and based on this, a control is performed.
- the present invention relates to a sensor arrangement for determining a braking force of a braking device of a vehicle.
- the braking device includes an articulated brake force generator supported by a support member on a vehicle part (e.g., a chassis member), the support member fixing the articulated brake force generator and thereby receiving a force (or a portion thereof) of the braking force generator during braking.
- the sensor arrangement comprises a sensor device, which is formed on or in the support element or attachable to a brake force-dependent force or
- the detection of the force or voltage generally occurs via detection of corresponding sensor signals (measured values) which are generated by the acting force or voltage in the sensor device and thus depend thereon. Subsequently, these sensor signals may be evaluated to obtain values corresponding to the force or stress in the support member.
- the detected voltage may include any component of the stress tensor, in particular, it may be an expansion or compression, a
- the sensor arrangement comprises a control device or a
- Evaluation unit which receives sensor signals of the sensor device and is adapted to a braking force for the vehicle based on the received To determine sensor signals.
- the braking force should not only be the force that is applied to decelerate the vehicle, but also include the force that must be applied to keep the vehicle at a standstill inclination. It is understood that the reception of the sensor signals can be wireless or wired, so that the control device does not have to be arranged on the support element (but it can). Likewise, the control device may comprise one or more units which may be arranged in the sensor device or at different positions in the vehicle. Thus, a pre-evaluation of the sensor signals can already take place in the sensor device. A subsequent analysis of the
- Measurement results can be made in another position in another control or analysis unit.
- the braking device may in particular be a disc brake, in which
- Brake pads exert a clamping force on a brake disc and so the
- the force acting on the brake disc clamping force generates a torque force or circumferential force on the brake pads, which intercepts the caliper and usually derived to a chassis part.
- This power flow takes place by the support by the support element.
- the acting circumferential force is the force acting at a certain radial distance from the axis of rotation of the brake disc to the brake pads in the tangential direction during braking.
- a rotation of the braking force generator is prevented by the support element, since it the
- Brake force generator holds in a certain position. Since the articulated suspension itself can not absorb the torque, the torque force acts directly on the support element. As a result, a stress is generated in the support member which is measured by the sensor means (with, for example, a load cell).
- the stress may be strain or compression.
- the braking force can also prevent the vehicle from rolling away (for example, on a slope).
- the sensor device can for this purpose have a plurality of elements which are in particular sensitive to strains and / or compressions.
- the control device may also provide at least one of the following functions: a calibration function and / or parameterization function that provides a vehicle-specific assignment of sensor signals to braking effects,
- a vehicle stop function that detects a stoppage of the vehicle based on the detected sensor signals
- start-assist function that provides driver assistance during start-up to prevent the vehicle from rolling away (rolling back or rolling forward) as a result of vehicle inclination, or to optimize at least one starting condition at start-up
- a monitoring function or diagnostic function for a caliper (or brake force generator) characteristic curve between braking force and pressure of the braking device
- a monitoring function or diagnostic function of a pressure of a spring brake also called passive braking force generator
- a pressure of a spring brake also called passive braking force generator
- electromechanical braking force generator between the braking force and an electrical or electronic control of the electromechanical Braking device (eg via a control of a current or a
- a control of brake pressure corresponding to the determined braking force to optimize (or optimally regulate) the braking action a monitoring function or diagnostic function of braking force over time (e.g., long term) to detect braking force variations in time.
- Braking forces are present or the braking force remains within a certain tolerance range.
- the monitoring functions ensure that the brake is properly released while the vehicle is in motion and stays in place, not unwanted
- Brake caliper characteristic refers to a desired braking force caused by a pressure (e.g., hydraulic or pneumatic or mechanical) in the
- Braking device to be achieved. Again, a certain / specified tolerance range can be monitored, which should not be left by the braking device.
- the application pressure for a passive braking force generator also
- Called spring accumulator is the pressure that must be achieved in order to apply the brake (not force-free, but a friction between brake pads and brake disc is present).
- the release pressure for the passive braking force generator is the pressure at which the brake releases (without friction between the brake pads and the brake disc).
- the braking effect is achieved for example by a spring effect, which initially builds a pressure in an exemplary spring-loaded cylinder for releasing the brake. For these systems it is important to monitor the pressure at which the braking force starts. Since exemplary embodiments can permanently monitor the braking force, this pressure can also be constantly monitored.
- the regulation of the brake pressure according to the feedback On the measured braking force, for example, varying frictional forces (in wet conditions, for example, usually decreases the friction value) between the brake pads and the brake disc or between the wheel and the ground into account. In this way, an optimal braking effect can always be achieved.
- Detecting braking force fluctuations in time can be done continuously or performed at predetermined intervals.
- the braking force determinations may be performed, for example, hourly, weekly, monthly or at any regular or irregular time intervals. This makes it possible, for example, to plan necessary maintenance work accordingly in advance. In contrast to conventional systems, this requires no rebuilding or removal of a brake component since the support rod - e.g. on request from the
- Control unit - the braking force at any times during the regular
- All the above-mentioned monitoring functions can be implemented in such a way that a leaving of a specific, defined tolerance range is detected for the monitored variables.
- a corresponding warning can be output or a corresponding signal can be sent to a control unit in order to initiate appropriate countermeasures there, so that the tolerance range is maintained again.
- the controller may be further configured to determine a torque (or force) caused by the vehicle inclination and based thereon
- Vehicle movement e.g., rolling back
- the vehicle anesthesia against the brake
- the control device may be further configured to provide at least one of the following functions: starting a predetermined start-up procedure in response to the determined torque or the determined force, taking into account the
- Vehicle inclination allows a smooth start
- the controller may compare a torque caused by the engine with a torque caused by a vehicle tilt to affect a release of the brake based on the comparison.
- the controller may compare a torque caused by the engine with a torque caused by a vehicle tilt to affect a release of the brake based on the comparison.
- Control means synchronize a release operation of the brakes and a starting torque of the traction motors, so as to roll back the vehicle to a
- control device is further configured to determine the standstill of the vehicle from the detected braking force-dependent force or voltage in the vehicle holding function.
- a disappearance of the braking force-dependent force or voltage in the sensor device indicates the standstill.
- a change of sign of the braking force-dependent force or voltage will indicate the standstill.
- the sensor device may comprise at least one force sensor (e.g.
- Piezo element and / or a strain gauge (eg strain gauges) include.
- the sensor device may also include sensor elements based on thin-film technology.
- sensors may be formed with one or more thin films whose resistance or capacitance varies with pressure, strain or compression, or the applied force.
- the invention is not intended to be limited to any particular form of sensor used.
- the sensor means is adapted to be releasably secured to the support member to enable retrofitting of support members with the sensor means.
- the present invention also relates to a support element for a hinged brake force generator of a disc brake of a vehicle, wherein the support element comprises one of the described sensor arrangements.
- the support element may be designed in particular (for example as a support rod) in order to perform braking force measurements on various vehicles as an exchangeable measuring device.
- the present invention also relates to a vehicle, in particular a
- the present invention also relates to a method for determining a
- Braking force of a braking device of a vehicle wherein the braking device has a hingedly suspended braking force generator, which is supported via a support member on a vehicle chassis part, wherein the support element fixes the articulated brake force generator and thereby absorbs a braking force acting on the braking force generator and forwards.
- the method comprises detecting a brake force-dependent force or stress in the support element by a sensor device on or in the support element.
- the present invention also relates to a computer program product having software code (software instructions) stored thereon and configured to perform any of the above-described methods when the software code is executed by a processing unit.
- the processing unit may be any form of computer or control unit having a corresponding microprocessor capable of executing a software code.
- Fig. 1 shows a sensor arrangement according to an embodiment of the
- Fig. 2 illustrates an attachment of the sensor assembly
- FIG. 3 shows a sectional view in the horizontal plane by an exemplary
- FIG. 1 shows an embodiment of a sensor arrangement which is suitable for determining a braking force of a braking device of a vehicle 50th Die
- Brake device comprises a hinged brake force generator 60, which is supported via a support member 70 on a vehicle part 80 (eg, a chassis part).
- the support element 70 fixes the articulated brake force generator 60 and thereby absorbs a force F acting on the brake force generator 60 during braking.
- the sensor arrangement comprises a sensor device 1 10, which on or in the Support member 70 is formed (or attachable there) to detect the braking force-dependent force F or stress in the support member 70.
- the braking force generator 60 includes brake pads 64 and is over the articulated
- Suspension 62 attached to a vehicle part 80 (rotatable).
- the brake pads 64 make frictional contact with a brake disc 52 (or a wheel) during braking to decelerate the vehicle 50 thereby.
- the support member 70 may be a support bar formed between the braking force generator 60 and the vehicle part 80 to prevent or allow only limited rotation of the braking force generator 60. Because of the articulated suspension 62 acts at
- the sensor device 1 10 may, for example, one or more
- strain gauges that can be connected via a corresponding bridge circuit particularly sensitive to certain strains or compressions.
- the sensor device 110 may, however, also have a force sensor (force sensor), which may comprise, for example, piezo elements or other elements which can directly or indirectly measure the longitudinal compressive or tensile force F.
- force sensor force sensor
- the geometry of the support element 70 (or in at least a portion thereof) can be selected accordingly.
- the support member 70 may include a thinned portion of a particular material such that the force F results in deformation, e.g. by
- Strain gauges is easily measurable.
- Fig. 2 shows a further embodiment of the present invention with further optional details.
- two wheels 51, 52 of the vehicle 50 are shown, wherein the wheels 51, 52 are shown only schematically and rotatably mounted on a vehicle chassis 80.
- the wheels 51, 52 may also be the brake disks for braking the vehicle 50.
- the braking force generator 60 is connected to the vehicle chassis 80 via the articulated suspension 62.
- the braking force generator 60 is connected via the support member 70 to the vehicle chassis 80.
- the braking force generator 60 in turn comprises brake pads 64, which generate a friction between the brake pads 64 and the brake disc 52 during the application of the disc brake pads 64.
- a circumferential force Fu is generated which, in the example shown, moves upward from right to left and onto the articulated suspension
- Brake force generator 60 acts.
- the support element 70 prevents the braking force generator 60 from being able to rotate about the articulated suspension 62.
- the support element 70 absorbs the resulting tensile stress and forwards them to the vehicle chassis 80.
- the circumferential force Fu acts in the opposite direction and, accordingly, the support member 70 receives a compressive load and forwards to the vehicle chassis 80.
- the force flow can be illustrated by the corresponding opposing forces, each acting in the opposite direction.
- the embodiment of Fig. 2 also shows a control device 120 and a pressure sensor 130.
- the pressure sensor 130 detects a pressure line 132 (hydraulic or pneumatic) a pressure in the braking force generator 60 to the
- a sensor line 124 between sensor device 1 10 in the support member 70 and the control device 120 is formed to the detected by the sensor device 1 10 sensor signals to the control device 120th
- the brake need not be a hydraulic or pneumatic brake, but may also be an electromechanical brake.
- the invention is not intended to be limited to a particular braking power generation.
- a torque M which is a product of the circumferential force Fu and the distance of the brake pads 64 from the axis of rotation acts.
- the peripheral force Fu is derived by the support member 70 to the vehicle chassis 80. It is understood that that Support member 70 can be coupled to different vehicle chassis parts to derive the brake torque force accordingly.
- Support member 70 is applied, also varies depending on the radius in which the brake pads 64 act on the brake disc 52.
- both tensile and compressive forces F can be determined by corresponding sensors in the support element 70.
- the support member 70 includes strain gauges (e.g.
- Support element can be arranged. It can also be used according to a thinned formed portion of the support member 70 for force measurement. The invention should not be limited to specific measurement methods. There may also be other possibilities for measuring force.
- Fig. 3 shows a sectional view in the horizontal plane by the braking force generator 60 and the brake disc 52, which is arranged rotatably about the rotational axis R between two opposing brake pads 64. In the illustration shown, the support member 70 is not visible. Upon application of a clamping force by the braking force generator 60 pressing forces Fp are generated, which are applied to the brake disc 52 on the friction surfaces 54 (interface between the brake pads 64 and the
- Brake disc 52 act or be transmitted through the brake disc 52 on the brake pads 64 as a counter force.
- Fig. 3 shows the state of activated brake. When the brake is released, a gap is created between the brake pads 64 and the brake disc 52.
- the pressing forces Fp may act in the same way as during the movement of the vehicle 50. Therefore, the pressing forces Fp itself are not necessarily a good measure of the acting
- the controller 120 is configured to detect the stoppage of the vehicle 50.
- the circumferential force Fu is zero when the vehicle 50 has come to a standstill and the
- Brake disc 52 no more torque M applies (at least when the vehicle 50 is in a plane).
- the standstill of the vehicle 50 can be detected and monitored directly from the disappearance of the force or voltage values measured by the sensor device 110.
- the stop of the vehicle 50 starts at the time when the torque M (or the peripheral force Fu) remains constant (the constant value corresponds to the vehicle inclination).
- the torque M is greater than the constant value that would otherwise not have braked the vehicle 50.
- FIG. 4A shows by way of example the vehicle 50, which is located in a plane
- FIG. 4B shows the vehicle 50 on a slope, by way of example.
- in-plane restraint see FIG. 4A
- no circumferential force or torque is applied to the wheels
- a hillside condition see FIG. 4B
- the brakes must overcome the downhill force Fh of the vehicle 50. In this case, a standstill is already active
- Torque force on the support member 70th This holding force compensates for the downhill force Fh of the vehicle 50 and can be measured directly by the sensor device 110 in the support element 70.
- the value Hangabreteskraft Fh for example, concretely from the peripheral force Fu using the wheel diameter, the distance of the brake pads 64 of the
- Rotary axis R and the coefficient of friction between the brake pads 64 are determined to the brake disc 52. This determination is also independent of whether the
- Brake force generator 60 applies the contact force Fp or not. Since the
- Brake force generator 60 are articulated together with the brake pads 64, the support member 70 measures directly the downhill force Fh. The direction of
- Downhill force Fh depends on whether the vehicle 50 is on an uphill or downhill slope with respect to the normal direction of travel. After determining the downgrade force Fh by the control device 120, the result can be correspondingly transmitted to a vehicle control unit in order to take into account the downhill force Fh, for example during startup.
- Embodiments in that no separate inclination sensors are required to determine a vehicle inclination and to take into account accordingly. However, the tilt sensors can still be used to thereby a
- the time-parameterized synchronization during startup is also not optimal, depending on the inclination in the stop position. For example, there is often a slight roll back, which can rarely be completely avoided. Likewise it is possible that it is due to acceleration variations too
- the control logic can Use information about the determined downhill force Fh to implement the synchronization during the release process of the brakes and the start of the traction motors. If, for example, the ascertained downhill force Fh indicates a very high value, the traction motors can be driven correspondingly more strongly in order to achieve this
- Anfahrschema can be executed, which of the determined in advance
- Downhill force Fh depends. In this scheme, no dynamic adjustment of the traction motor power is made, but a predetermined program is executed. Of course, a combination of the two control options can be formed, i. It is first determined depending on the
- Downhill force Fh started a predetermined start-up program, which is then dynamically readjusted. Therefore, according to embodiments, it is not necessary to monitor a rollback via a speed sensor, which would also have to evaluate a direction of travel. Embodiments thus avoid the rolling back of the vehicle, without the need for further sensors would be required. In addition, the jerky movements are minimized due to acceleration variations, since the control of the starting torque can be done dynamically depending on the inclination and residual force of the brakes. Finally, the traction motors need not unnecessarily approach the braking force, which both saves energy and minimizes lining wear. Embodiments of the present invention also relate to a support member 70, in particular a support rod, with a force transducer as
- Sensor device 1 10 Therefore, simple retrofitting of vehicles 50 be made. Likewise, the support member 70 can be easily replaced or temporarily mounted on vehicles 50 for measurements. This is a great advantage over conventional braking force measuring tools that require extensive structural measures to properly retrofit the vehicles 50 or to replace defective parts.
- Brake force generator 60 replace without having to replace the sensor device 1 10.
- the retrofitting of vehicles without problems is possible, since only the support member 70 must be replaced to a
- the support member 70 is used with force transducer 10 as a measuring device or a measuring instrument for testing the brake during dynamic test drives. This can be done, for example, as a replacement of the standard support bar (without a load cell).
- a measuring support element 70 can be used as a measuring instrument only for test drives - but not for continuous operation. Such a measuring instrument is very easy to install, since the installation or conversion requires only a few minutes.
- the said functions or the described method may also be computer implemented, i. it may be implemented by instructions stored on a storage medium and capable of following the steps of
- the instructions typically include one or more
- Instructions that may be stored in different ways on different media in or peripherally to a control unit (with a processor) that, when read and executed by the control unit, cause the control unit to perform functions, functions and operations related to Performing a method according to the present invention are necessary.
- the support member 70 may include or be a force transducer (sensor device 1 10).
- the force transducer 110 is configured to detect the wheel peripheral force Fu (for example, to measure directly or indirectly) and to derive it from the chassis 80. The measurement takes place for example by a deformation.
- the force transducer 10 is designed to measure the introduced force. In the simplest case that is
- Support member 70 a cylindrical rod which is between the caliper 60 and a Vehicle part is formed, which is adapted to receive and dissipate the acting force F.
- the support element 70 is easily replaceable, conventional support elements can be easily retrofitted with a sensor device 110.
- the braking force generator 60 does not need to be dismantled.
- the force generator 60 can be replaced without the load cell 10 would have to be replaced.
- the load cell 1 10 can be placed without great effort.
- the support rod 70 can also be retrofitted with a load cell 1 10.
- a calibration is carried out in exemplary embodiments which includes an assignment of the measured values of the vehicle
- Calibration is independent of the caliper body unit and the force generator 60, but depends on several vehicle-specific parameters, such as:
- Vehicle 50 must be recorded. However, a redundant detection is possible so that a higher reliability of the results obtained can be achieved. In particular for autonomous systems, such a redundant acquisition of measured values is important in order to ensure constant control over the reliable mode of operation of the vehicle 50.
- the vehicle slope force Fh there is also a determination of the vehicle slope force Fh, wherein again the torque force of the brake disc 52 is determined, the sign indicates in which direction the braking force acts. From a change of sign of the torque M in a holding process can be concluded that the vehicle is on a hillside. After a standstill of the vehicle (e.g., using other sensor devices), the downhill power of the vehicle 50 can be directly determined. In contrast to conventional systems, according to embodiments, no additional inclination sensors are required to determine the slope of the vehicle 50. However, they may be optional to provide redundancy and to increase the accuracy of the two independent systems. Again, this is often desirable for autonomous systems.
- the procedure according to the invention again consists in that no additional speed sensors or speed sensors would have to be evaluated or monitored in order to prevent the vehicle 50 from rolling back.
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Regulating Braking Force (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017114610 | 2017-06-30 | ||
DE102017009125.0A DE102017009125A1 (de) | 2017-06-30 | 2017-09-29 | Sensoranordnung und Verfahren zum Ermitteln einer Bremskraft |
PCT/EP2018/065534 WO2019001950A1 (de) | 2017-06-30 | 2018-06-12 | Sensoranordnung und verfahren zum ermitteln einer bremskraft |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3645355A1 true EP3645355A1 (de) | 2020-05-06 |
Family
ID=62791709
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18737154.7A Active EP3645354B1 (de) | 2017-06-30 | 2018-06-12 | Schienenfahrzeug mit sensoreinrichtung zur messung von reibungsbremskräften einer reibungsbremseinrichtung |
EP18735506.0A Withdrawn EP3645353A1 (de) | 2017-06-30 | 2018-06-12 | Schienenfahrzeug mit einer auf reibungsbremskräften basierenden anfahrhilfefunktion |
EP18742400.7A Withdrawn EP3645355A1 (de) | 2017-06-30 | 2018-06-12 | Sensoranordnung und verfahren zum ermitteln einer bremskraft |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18737154.7A Active EP3645354B1 (de) | 2017-06-30 | 2018-06-12 | Schienenfahrzeug mit sensoreinrichtung zur messung von reibungsbremskräften einer reibungsbremseinrichtung |
EP18735506.0A Withdrawn EP3645353A1 (de) | 2017-06-30 | 2018-06-12 | Schienenfahrzeug mit einer auf reibungsbremskräften basierenden anfahrhilfefunktion |
Country Status (3)
Country | Link |
---|---|
EP (3) | EP3645354B1 (de) |
DE (2) | DE102017009125A1 (de) |
WO (3) | WO2019001950A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7040487B2 (ja) * | 2019-03-20 | 2022-03-23 | 株式会社ダイフク | 物品搬送設備 |
DE102019114848A1 (de) * | 2019-06-03 | 2020-12-03 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Schienenfahrzeug-Bremsvorrichtung mit einer Feststellbremseinrichtung und Verfahren zum Steuern einer Feststellbremseinrichtung |
JP2022117698A (ja) * | 2021-02-01 | 2022-08-12 | ナブテスコ株式会社 | 車両用ブレーキ装置 |
DE102021202612A1 (de) | 2021-03-18 | 2022-09-22 | Continental Teves Ag & Co. Ohg | Verfahren zur Überwachung des Löseverhaltens einer elektromechanischen Radbremse eines Fahrzeugs |
DE102021120185A1 (de) | 2021-08-03 | 2023-02-09 | Zf Cv Systems Global Gmbh | Verfahren zur Bestimmung der Bremskraft an Fahrzeugen |
DE102022118023A1 (de) | 2022-07-19 | 2024-01-25 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Ausrüstung eines teilautonom oder autonom betriebenen Kraftfahrzeugs |
DE102022210339A1 (de) | 2022-09-29 | 2024-04-04 | Siemens Mobility GmbH | Sandstreuanlage für ein Schienenfahrzeug |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4716994A (en) | 1985-08-16 | 1988-01-05 | Akebono Brake Industry Co., Ltd. | Disc brake |
DE69024389T2 (de) * | 1989-03-18 | 1996-05-15 | Lucas Ind Plc | Bremssysteme |
DE4418791C1 (de) * | 1994-04-11 | 1995-08-31 | Bergische Stahlindustrie | Vorrichtung für die Messung der Bremskraft an Bremsscheiben von Schienenfahrzeugen |
JP3701766B2 (ja) * | 1997-03-26 | 2005-10-05 | 財団法人鉄道総合技術研究所 | ブレーキ反力検出装置 |
DE102005021719A1 (de) | 2005-05-11 | 2006-11-16 | Zf Friedrichshafen Ag | Verfahren und Vorrichtung zur Steuerung eines Fahrzeugbremssystems |
DE102009005624A1 (de) | 2009-01-22 | 2010-08-05 | Siemens Aktiengesellschaft | Verfahren zur Steuerung der Traktionskraft eines Antriebes |
DE102011113083A1 (de) | 2011-09-09 | 2013-03-14 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Bremssteuereinrichtung für eine Bremsanlage eines Schienenfahrzeuges, Bremsanlage, Schienenfahrzeug und Verfahren zum Durchführen einer Funktionsdiagnose |
DE102013008227A1 (de) | 2013-05-13 | 2014-11-13 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Verfahren und Vorrichtung zum Bestimmen eines Bremsmoments an einer Bremsanlage für ein Schienenfahrzeug |
DE102013213618A1 (de) * | 2013-07-11 | 2015-01-15 | Siemens Aktiengesellschaft | Bremsvorrichtung |
DE102013219743A1 (de) * | 2013-09-30 | 2015-04-02 | Siemens Aktiengesellschaft | Verfahren zum Steuern eines Anfahrvorgangs |
-
2017
- 2017-09-29 DE DE102017009125.0A patent/DE102017009125A1/de active Pending
- 2017-09-29 DE DE102017009127.7A patent/DE102017009127A1/de active Pending
-
2018
- 2018-06-12 EP EP18737154.7A patent/EP3645354B1/de active Active
- 2018-06-12 EP EP18735506.0A patent/EP3645353A1/de not_active Withdrawn
- 2018-06-12 WO PCT/EP2018/065534 patent/WO2019001950A1/de active Application Filing
- 2018-06-12 WO PCT/EP2018/065539 patent/WO2019001951A1/de active Application Filing
- 2018-06-12 EP EP18742400.7A patent/EP3645355A1/de not_active Withdrawn
- 2018-06-12 WO PCT/EP2018/065529 patent/WO2019001949A1/de active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2019001950A1 (de) | 2019-01-03 |
WO2019001949A1 (de) | 2019-01-03 |
DE102017009125A1 (de) | 2019-01-03 |
EP3645353A1 (de) | 2020-05-06 |
EP3645354A1 (de) | 2020-05-06 |
EP3645354B1 (de) | 2021-04-21 |
WO2019001951A1 (de) | 2019-01-03 |
DE102017009127A1 (de) | 2019-01-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3645355A1 (de) | Sensoranordnung und verfahren zum ermitteln einer bremskraft | |
DE112009000583B4 (de) | Schienenfahrzeugbremsvorrichtung, Schienenfahrzeug und Verfahren | |
DE10151950B4 (de) | Selbstverstärkende elektromechanische Scheibenbremse mit Reibmomentermittlung | |
EP2986866B1 (de) | Verfahren zum betätigen einer elektrisch betätigten reibungsbremse | |
EP0489888B1 (de) | Scheibenbremse | |
DE102014119024B4 (de) | System und Verfahren zur Warnung vor Verschleiß eines Bremsreibbelages eines Fahrzeuges | |
DE102008063892B4 (de) | Bremsanlage eines Schienenfahrzeugs mit Kompensation von Schwankungen der Reibbedingungen | |
DE102009005467B4 (de) | Bremsvorrichtung | |
EP2647866B1 (de) | Schiebesattel-Scheibenbremse eines Kraftfahrzeugs | |
EP3343193B1 (de) | Mobile kalibrierungsvorrichtung für einen bremsenprüfstand | |
EP1507987B1 (de) | Fehler-sicherheitskonzept für eine elektromechanische bremse mit selbstverstärkung | |
DE102011113086A1 (de) | Bremskrafterfassung für dynamische Bremsen eines Schienenfahrzeugs | |
DE102007006352A1 (de) | Verfahren und Vorrichtung zum Steuern eines Fahrzeugzurückrollens | |
EP2379382B1 (de) | Bremsanlage eines schienenfahrzeugs mit reduziertem stick-slip-effekt | |
DE102017108279B3 (de) | Mobile Kalibrierungsvorrichtung für einen Bremsenprüfstand | |
DE102011002567A1 (de) | Scheibenbremse sowie Verfahren zur Ermittlung einer wirkenden Bremskraft oder eines wirkenden Bremsmoments | |
EP0643290A1 (de) | Einrichtung zur Prüfung, Überwachung und Regelung von mechanischen Bremsen | |
CN118275138A (zh) | 一种高精度型滚筒式汽车制动检验台 | |
EP2522874A1 (de) | Aufzugsantrieb mit Bremse | |
EP3385137B1 (de) | Verfahren zur lüftspielbestimmung einer gleitsattel-scheibenbremse | |
DE102004008383A1 (de) | Verfahren und System zum Kompensieren einer Veränderung des Übertragungsverhaltens eines elektronischen Bremssystems | |
DE10164719C1 (de) | Verfahren eines Verfahrens zur bremsanforderungsabhängigen Bestromung eines elektromechanischen Bremsaktuators einer Fahrzeugbremse | |
WO2015127931A1 (de) | Messeinrichtung für eine tretlageranordnung eines fahrrads und verfahren zum betreiben einer derartigen messeinrichtung | |
DE112019007643T5 (de) | Bremsensteuerungsvorrichtung und bremsensteuerungsverfahren | |
DE102021203735A1 (de) | Verfahren zum Bestimmen von Verschleißparametern eines Bremsbelags |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20200130 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20220929 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20230210 |