WO2008071578A1 - Enregistrement séparé des forces d'application et de friction sur un frein - Google Patents

Enregistrement séparé des forces d'application et de friction sur un frein Download PDF

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Publication number
WO2008071578A1
WO2008071578A1 PCT/EP2007/063173 EP2007063173W WO2008071578A1 WO 2008071578 A1 WO2008071578 A1 WO 2008071578A1 EP 2007063173 W EP2007063173 W EP 2007063173W WO 2008071578 A1 WO2008071578 A1 WO 2008071578A1
Authority
WO
WIPO (PCT)
Prior art keywords
force
friction lining
deformation component
electrically detectable
deformation
Prior art date
Application number
PCT/EP2007/063173
Other languages
German (de)
English (en)
Inventor
Andreas Grätz
Stefan Breitschuh
Original Assignee
Continental Automotive Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Continental Automotive Gmbh filed Critical Continental Automotive Gmbh
Publication of WO2008071578A1 publication Critical patent/WO2008071578A1/fr

Links

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
    • 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
    • B60T8/171—Detecting parameters used in the regulation; Measuring values used in the regulation
    • 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
    • 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
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
    • F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
    • 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
    • G01L5/16—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force
    • G01L5/161—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force using variations in ohmic resistance
    • G01L5/162—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force using variations in ohmic resistance of piezoresistors
    • 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
    • F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
    • F16D2066/005—Force, torque, stress or strain

Definitions

  • the present invention relates to the separate detection of application force and braking force to a braking device.
  • a friction lining is generally pressed against a surface, referred to as a braking surface, of a subject movably arranged relative to the friction lining, the braking object.
  • a frictional force arises therebetween, which is proportional to the proportion of the pressure force that is normal to the contact surface between the friction lining and the braking object. This frictional force is called braking force below.
  • the brake object In vehicle brakes, the brake object is usually designed as a brake disc. Depending on the type of brake arrangement used, however, the brake object can also assume other configurations; in motor vehicles, for example, the form of a hollow drum, or in rail vehicles, e.g. the shape of an impeller. If not the object movably arranged relative to the brake lining itself, but the device bearing the friction lining is delayed or held, then, as is usual with a rail brake, the braking object can also assume a rail-shaped formation.
  • the normal force is the manipulated variable and the braking force is the controlled variable. Since the coefficient of friction between friction lining and object to be braked is greatly influenced by the temperature at the interface, but also environmental conditions such as moisture or variations in the roughness of the braking surface can lead to a change in the coefficient of friction, can not close directly on the friction or braking force achieved by the normal force. To control the braking force, therefore, the frictional force itself must be detected.
  • the determination of the normal force usually takes place via the measurement of the application force.
  • force sensors are often used in the support of a friction lining on the brake caliper. Instead of this direct detection of the application force, this can also be derived indirectly from the widening of the brake caliper when applying the brake.
  • the measurement of the widening is carried out by means of displacement sensors, wherein the clamping force is usually deduced from the different widening of a loaded and an unloaded arm of the brake caliper.
  • Another way of determining the application force is to perform a strain measurement on a representative point of the caliper followed by a conversion of the strain into the application force.
  • measuring hubs are currently used in vehicle construction.
  • the friction force is determined by recalculation via the friction wheel.
  • Corresponding systems can be integrated into the vehicle rim or mounted on the suspension of a vehicle. Due to their size, however, they are only as development can be used and not used as part of a braking force control.
  • the object of the invention is to provide a device which detects the normal force and frictional force occurring between a friction lining and a movable object arranged movably relative to the friction lining separately and has a small overall size.
  • the invention comprises a device for detecting a, occurring between a friction lining and a relative to this movable lent arranged object, normal force and mediated by the normal force between the friction lining and the article caused frictional force.
  • the device has a first sensor element, a second sensor element and a processing device.
  • the first sensor element is configured to convert a first deformation component into a first electrically detectable parameter representing the first deformation component
  • the second sensor element is configured to convert a second deformation component into a secondelectrically detectable parameter representing the second deformation component
  • the first deformation component and the second deformation component in each case represent a component of a deformation of a body and the first deformation component and the second deformation component each represent a component of a deformation of a body
  • the first deformation component occupies an angle ⁇ to the rubbing direction and the second deformation component an angle - ⁇ to the rubbing direction, and ⁇ is different from zero.
  • the device has a small size and is thus easily integrated into conventional brake systems.
  • Frictional force allows accurate control of the braking force of motor vehicles, machine tools or other machines.
  • the angle between the rubbing direction and the two deformation components is ⁇ 45 degrees, so that a high sensitivity and measuring quality of the force determination are achieved.
  • the processing device is expediently designed to determine the normal force and the frictional force on the basis of the first electrically detectable parameter and the second electrically detectable parameter.
  • the processing device is expediently designed to determine the normal force on the basis of an additive combination of the first electrically detectable parameter and the secondelectrically detectable parameter and the frictional force on the basis of a subtractive combination of the first electrically detectable parameter and the second electrically detectable parameter ,
  • the friction lining can be accommodated in a support device which has a rigid, for example non-positive, positive fit or cohesively executed connection with at least one, rigidly connected to the friction lining, thrust field, wherein the thrust field is adapted to receive the first sensor element and the second sensor element.
  • the support device with several, rigidly connected to the friction lining shear fields in turn is rigidly connected.
  • the first sensor element and the second sensor element are each arranged in the interior of the friction lining.
  • FIG. 1 shows a disk brake in a schematic representation
  • FIG. 2 shows the deformation of a body caused by the frictional force and normal force
  • FIG. 3 illustrates the tensioning and shear stress caused by the normal force and the frictional force, as well as their components in the respective measuring directions
  • Figure 4 shows an embodiment of a device for separate detection of acting on a friction lining normal and frictional force shows
  • Figure 5 shows a block diagram of the electronic component of a device for separately detecting the forces acting on a friction lining normal and frictional force.
  • FIG. 1 shows an example of a disk brake 10 in a schematic representation.
  • the brake object is formed by the brake disc 6 only partially shown.
  • the braking of the brake disc 6 is effected by means of two, arranged on opposite sides of the brake disc 6 and received in a floating caliper 4, friction linings 1 and 5.
  • the active friction lining 1 is attached to an application device having a fixedly connected to the caliper part 4 and 3 comprises a relative to the caliper 4 slidable part 2.
  • the passive friction lining 5 is firmly connected to the brake caliper.
  • To brake the brake disk 6, the active friction lining 1 of the brake 10 is pressed by the application device with a normal force N against a side surface of the brake disk 6.
  • the passive friction lining 5 is also pressed with the normal force N against the second side of the brake disc 6.
  • the normal force N on each of the brake linings 1 or 5 causes a frictional force R
  • the direction of the movement of the braking surface, ie the covered by the respective friction lining side surface of the brake disc 6, is opposite to the friction linings
  • normal force and friction force are arranged orthogonal to one another.
  • the normal force N leads to a compression
  • the friction force R leads to a distortion of a physical object subjected to these forces.
  • the rectangular cross-section of the friction lining 1 shown in FIG. 1 would thus have a diamond-shaped distortion during a braking operation. This is illustrated in Figure 2, wherein the unloaded body or object 11 with a solid, the deformed under the respective forces body 12, however, is shown with a dashed line.
  • the deformation of the article 11 by the friction force R is shown schematically.
  • the frictional force acts on the surface of the object 11, which bears against the braking surface of the brake object, and displaces it, due to the elastic deformability of the object 11, parallel to the opposite surface. If the surface shown in the illustration is marked with a measuring cross 13 whose bars form the diagonals of a square, then the measuring cross 13 is distorted under the influence of the frictional force R to the shape shown in dash-dotted line representation a.
  • Representation b of FIG. 2 shows the effect of the normal force N on the shape of the object 11.
  • the force N acting over the entire surface leads to a compression of the elastically deformable object, so that essentially changes its thickness in the form shown.
  • the effect of a combination of frictional force R and normal force N is illustrated in figure c of the figure, wherein the loading of the article 11 with these forces results in a distortion resulting in an upset, parallelogram shaped cross-sectional shape.
  • the elastic distortion is also expressed in the form of the illustrated mitverzerrten measuring cross 13, which forms the diagonal of a square in the unloaded state of the article 11. The distortion, exaggerated in FIG.
  • strain sensors each of the sensors being designed to measure a strain component in only one direction.
  • the measuring directions of the two sensors are arranged opposite attacking friction and normal force each at an angle and are also at an angle to each other.
  • FIG. 3 a the object 11 subjected to the normal force N and the frictional force R is shown in the non-distorted state.
  • the normal force N is directed against the ordinate y, the frictional force R in the direction of the abscissa x of a Cartesian coordinate system.
  • the normal force causes a compressive stress inside the article 11
  • Equation 1 denotes the area over which the normal force acts on the brake object 11.
  • the friction force R causes a shear stress
  • ⁇ ⁇ 0.5- ( ⁇ x + ⁇ y ) + 0.5- ( ⁇ x - ⁇ y ) -cos 2 ⁇ + ⁇ xy -sin 2 ⁇ ; (3a)
  • ⁇ ⁇ 0.5- ( ⁇ x + ⁇ y ) - 0.5- ( ⁇ x - ⁇ y ) -cos 2 ⁇ - ⁇ xy -sin 2 ⁇ ; (3b)
  • ⁇ ⁇ -0.5- ( ⁇ x - ⁇ y ) -sin 2 ⁇ + ⁇ xy -cos 2 ⁇ ; (4)
  • E is the modulus of elasticity and v is the transverse contraction number of the material from which the shear field is made.
  • ⁇ (- ⁇ ) is obtained in - ⁇ direction, i. the strain absorbed by the second strain sensor:
  • the difference of the strains in the respective measuring directions is therefore proportional to the friction force R according to equation 7a, while the sum of the strains in the respective measuring directions according to equation 7b is proportional to the normal force N.
  • This result also applies generally to measuring directions ⁇ and ⁇ , which include a different angle from zero at right angles.
  • C 2 in this case assumes 0.5 times the value of the maximum gain.
  • strain sensors in particular resistive (eg strain gauges), piezoresistive, capacitive (MEMS) and fiber optic (based on the Brugg bin) strain sensors can be used, which in a suitable manner to a normal and frictional force directly or indirectly exposed object 11 can be applied.
  • the strain sensors need not necessarily be mounted on the surface of the article 11, for example a friction lining 1 or 5, they may also be accommodated within the article in its volume. In any case, the strain sensors must be structurally connected to the article 11. An arrangement of the strain sensors in the interior of the article 11 can already take place during the manufacture of the object, but the strain sensors can also be subsequently introduced, for example by means of suitable adhesive, into the article.
  • the measuring cross can also be constructed with a strain gauge rosette.
  • the strain sensors are not attached to the friction linings 1 and 5 of the brake itself, but on a non-positively connected to a friction lining shear field. An example of this is shown in FIG.
  • the friction lining 1 or 5 is applied to a lining carrier 7, which is accommodated in a supporting device 8 designed as a frame construction.
  • a measuring cross 13 with two mutually arranged at an angle strain sensors is applied so that the strain sensors can detect the expansion components of the shear field in the respective measuring directions of the strain sensors. Due to the rigid connection, the forces acting on the friction lining forces are transmitted directly to the thrust field 9 and deform it according to the transmitted forces.
  • the arrangement of FIG. 4 may comprise a plurality of shear fields 9 to which the normal and frictional forces acting on the friction lining are transmitted.
  • the pusher fields can be connected to the lining carrier or the frame construction in each case rigidly or via a positive connection, which enables the introduction of force.
  • supporting device 8 and thrust field or shear fields can be formed in one piece.
  • the frame structure 8 is designed rigid enough that the forces discharged over it do not appreciably deform them.
  • the strain sensors 13 can be arranged both on the surface and in the volume of the pusher fields or 9. Notwithstanding the representation, the thrust field 9 can also be arranged so that it is subjected to train.
  • the expansion component of the thrust field 9 or of an object 11 transmitted to a strain sensor can be detected via a change in a parameter of the sensor associated with the strain.
  • the characteristic is generally formed by the resistance of the sensor element, in the case of fiber-optic strain sensors by the wavelength of the light reflected at the Bragg gratings.
  • the first strain sensor 14 and the second strain sensor 15 of the measuring cross 13 are usually already provided with a measuring circuit which supplies an electrical output signal representing the expansion of the respective sensor element. If the sensors are not equipped with a corresponding measuring circuit, the processing device 20 comprises sensors connected to the strain sensors 14 and 15, respectively
  • Measuring devices 21_1 and 21_2 for electrically detecting the change associated with the deformation of the respective strain sensor whose characteristic.
  • the electrical measuring signals output by the measuring circuits of the sensors 14 and 15 or by the measuring devices 21 1 and 21_ 2 connected to the sensors are forwarded to a summation device 22 and a subtraction device 23 of the processing device 20.
  • a difference-forming device 23 an output signal is generated on the basis of a difference of the measuring signals from the sensors 14 and 15, which represents the frictional force R in an arrangement which corresponds to the representations of the figures 2 or 4.
  • the output signal generated by the summation means 22 based on a sum of the measurement signals from the sensors 14 and 15 represents the normal force N.
  • the present invention enables the separate detection of the force exerted on a friction lining of a brake normal force and thereby caused frictional force at the interface between the friction lining and the brake object.
  • the small size of the strain sensors used to determine the forces allows the integration of the measuring apparatus in conventional brake systems, whereby a regulation of the braking force during a braking operation is possible.
  • the measured quantities recorded are independent of the distance between the friction plane and the measuring point, so that lining wear has no effect on the measurement. Due to the measurement in the immediate vicinity of the frictional contact the disturbing influences are minimized by possibly acting inertial forces.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Braking Arrangements (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

L'invention concerne un dispositif pour enregistrer une force normale (N) apparaissant entre une garniture de friction (1, 5) et un objet (6) disposé à déplacement par rapport à celle-ci, et une force de friction (R) produite en étant transmise par l'intermédiaire de la force normale (N) entre la garniture de friction (1, 5) et l'objet (6). Le dispositif présente : un premier élément détecteur (14), qui est conçu pour transformer une première composante de déformation (e(a)) en une première caractéristique électriquement enregistrable représentant la première composante de déformation ; un deuxième élément détecteur (15), qui est conçu pour transformer une deuxième composante de déformation (e(-a)) en une deuxième caractéristique électriquement enregistrable représentant la deuxième composante de déformation ; et un équipement de traitement (20) pour traiter au moins la première caractéristique électriquement enregistrable et la deuxième caractéristique électriquement enregistrable. La première composante de déformation et la deuxième composante de déformation représentent ici respectivement une composante d'une déformation d'un corps (1, 5, 9, 11), sachant que la première composante de déformation forme un angle a par rapport à la direction de friction et la deuxième composante de déformation un angle -a par rapport à la direction de friction, et que a est différent de zéro.
PCT/EP2007/063173 2006-12-13 2007-12-03 Enregistrement séparé des forces d'application et de friction sur un frein WO2008071578A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006058882.7A DE102006058882B4 (de) 2006-12-13 2006-12-13 Separate Erfassung von Zuspann- und Reibkräften an einer Bremse
DE102006058882.7 2006-12-13

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Publication Number Publication Date
WO2008071578A1 true WO2008071578A1 (fr) 2008-06-19

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WO (1) WO2008071578A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8357633B2 (en) 2007-08-13 2013-01-22 Dow Agrosciences, Llc 2-(2-fluoro-substituted phenyl)-6-amino-5-chloro-4-pyrimidinecarboxylates and their use as herbicides
EP2700557A1 (fr) * 2012-08-21 2014-02-26 RöschConsult International Ltd. Dispositif et procédé de mesure de la force de pression des garnitures de frein sur les disques de frein de véhicules sur rails
CN114008425A (zh) * 2019-06-13 2022-02-01 乐姆宝公开有限公司 用于对在车轮的制动卡钳处或悬架处的检测点作用的切向力和法向力同时进行检测的设备和方法
US20220291024A1 (en) * 2019-08-14 2022-09-15 Brembo S.P.A. Method and system for interrogating an optical fiber sensor of the fiber bragg grating type, using a tunable optical bandpass filter

Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
DE102007061094A1 (de) * 2007-12-19 2009-07-02 Robert Bosch Gmbh Reibungsbremse
DE102008063892B4 (de) * 2008-12-19 2010-11-04 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Bremsanlage eines Schienenfahrzeugs mit Kompensation von Schwankungen der Reibbedingungen
DE102015011951A1 (de) * 2015-09-18 2017-03-23 Wabco Europe Bvba Messeinrichtung und Verfahren zur Erfassung eines Schleifmoments

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EP0611959A2 (fr) * 1993-02-15 1994-08-24 Japan Electronics Industry, Ltd. Circuit électrique pour un dispositif de mesure de force agissant sur une roue
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DE10046130A1 (de) * 2000-09-15 2002-04-04 Reinhard Wilke Elektromotorische Bremsbetätigungsvorrichtung für eine ein Bremsgestänge sowie Bremsbacken aufweisende Bremsmechanik, insbesondere für Schienenfahrzeuge
WO2003029682A1 (fr) * 2001-10-01 2003-04-10 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Frein a disque et procede pour determiner la force de freinage d'un frein a disque
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WO2005015045A1 (fr) * 2003-08-06 2005-02-17 Continental Teves Ag & Co.Ohg Frein pour vehicule

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US4016755A (en) * 1974-09-06 1977-04-12 Svenska Aktiebolaget Bromsregulator Method and device for dynamically measuring brake forces
EP0611959A2 (fr) * 1993-02-15 1994-08-24 Japan Electronics Industry, Ltd. Circuit électrique pour un dispositif de mesure de force agissant sur une roue
DE19539012A1 (de) * 1995-10-19 1997-04-24 Teves Gmbh Alfred Selbstverstärkende Reibungsbremse
DE19639686A1 (de) * 1996-09-26 1998-04-16 Siemens Ag Bremsanlage für ein Kraftfahrzeug
US6634208B2 (en) * 2000-07-28 2003-10-21 S.N.R. Roulements Bearing and interface assembly comprising at least one elastic deformation zone and a braking assembly comprising it
DE10046130A1 (de) * 2000-09-15 2002-04-04 Reinhard Wilke Elektromotorische Bremsbetätigungsvorrichtung für eine ein Bremsgestänge sowie Bremsbacken aufweisende Bremsmechanik, insbesondere für Schienenfahrzeuge
WO2003029682A1 (fr) * 2001-10-01 2003-04-10 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Frein a disque et procede pour determiner la force de freinage d'un frein a disque
WO2005015045A1 (fr) * 2003-08-06 2005-02-17 Continental Teves Ag & Co.Ohg Frein pour vehicule

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8357633B2 (en) 2007-08-13 2013-01-22 Dow Agrosciences, Llc 2-(2-fluoro-substituted phenyl)-6-amino-5-chloro-4-pyrimidinecarboxylates and their use as herbicides
US8598085B2 (en) 2007-08-13 2013-12-03 Dow Agrosciences, Llc. 2-(2-fluoro-substituted phenyl)-6-amino-5-chloro-4-pyrimidinecarboxylates and their use as herbicides
EP2700557A1 (fr) * 2012-08-21 2014-02-26 RöschConsult International Ltd. Dispositif et procédé de mesure de la force de pression des garnitures de frein sur les disques de frein de véhicules sur rails
WO2014029466A2 (fr) * 2012-08-21 2014-02-27 Röschconsult International Ltd. Dispositif et procédé de mesure de la pression de contact des garnitures de freins sur les disques de freins de véhicules ferroviaires
WO2014029466A3 (fr) * 2012-08-21 2014-08-14 Röschconsult International Ltd. Dispositif et procédé de mesure de la pression de contact des garnitures de freins sur les disques de freins de véhicules ferroviaires
CN104487313A (zh) * 2012-08-21 2015-04-01 罗切咨询国际有限公司 测量轨道运输工具的刹车摩擦片在制动盘上的压紧力的装置和方法
CN104487313B (zh) * 2012-08-21 2017-01-18 罗切咨询国际有限公司 测量轨道运输工具的刹车摩擦片在制动盘上的压紧力的装置和方法
CN114008425A (zh) * 2019-06-13 2022-02-01 乐姆宝公开有限公司 用于对在车轮的制动卡钳处或悬架处的检测点作用的切向力和法向力同时进行检测的设备和方法
US20220291024A1 (en) * 2019-08-14 2022-09-15 Brembo S.P.A. Method and system for interrogating an optical fiber sensor of the fiber bragg grating type, using a tunable optical bandpass filter

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DE102006058882A1 (de) 2008-06-19
DE102006058882B4 (de) 2021-01-14

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