WO2008000464A1 - Procédé pour déterminer l'état d'usure de garnitures de frein sur des unités de frein sur roue d'un système de freinage d'automobile et système de freinage d'automobile correspondant - Google Patents

Procédé pour déterminer l'état d'usure de garnitures de frein sur des unités de frein sur roue d'un système de freinage d'automobile et système de freinage d'automobile correspondant Download PDF

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Publication number
WO2008000464A1
WO2008000464A1 PCT/EP2007/005692 EP2007005692W WO2008000464A1 WO 2008000464 A1 WO2008000464 A1 WO 2008000464A1 EP 2007005692 W EP2007005692 W EP 2007005692W WO 2008000464 A1 WO2008000464 A1 WO 2008000464A1
Authority
WO
WIPO (PCT)
Prior art keywords
brake
group
wear
units
wheel
Prior art date
Application number
PCT/EP2007/005692
Other languages
German (de)
English (en)
Inventor
Nicholas Alford
Josef Knechtges
Original Assignee
Lucas 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=38624442&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2008000464(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Lucas Automotive Gmbh filed Critical Lucas Automotive Gmbh
Publication of WO2008000464A1 publication Critical patent/WO2008000464A1/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
    • 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
    • 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
    • F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
    • F16D66/02—Apparatus for indicating wear
    • 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
    • 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
    • F16D2066/006—Arrangements for monitoring working conditions, e.g. wear, temperature without direct measurement of the quantity monitored, e.g. wear or temperature calculated form force and duration of braking
    • 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
    • F16D2121/00—Type of actuator operation force
    • F16D2121/02—Fluid pressure
    • 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
    • F16D2121/00—Type of actuator operation force
    • F16D2121/18—Electric or magnetic
    • F16D2121/24—Electric or magnetic using motors
    • 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
    • F16D2123/00—Multiple operation forces

Definitions

  • the present invention relates to a method for determining the state of wear of brake linings on wheel brake units of a motor vehicle brake system and to a corresponding motor vehicle brake system.
  • Modern motor vehicle brake systems can be designed in different ways.
  • brake pads are pressed by means of suitable pressure piston against a brake disc associated therewith by hydraulic pressurization in order to achieve a braking effect.
  • the brake pads are delivered by an electromechanical actuator to the associated brake disc.
  • the rotational movement of a motor shaft is first reduced by a planetary gear and then implemented by means disposed within the hollow piston nut-spindle arrangement of the actuator in a translational movement of the wheel brake units.
  • the hollow piston is detected by this translational movement and transmits the translational movement to one of the two brake shoes, which is then applied against the brake disc. In this vehicle brake is not actuated
  • DE 43 26 256 C1 discloses a method for determining a wear-dependent brake force distribution.
  • Wheel brake units taking into account the predetermined Zustellwegs i5 and the determined current delivery distance and
  • Wheel brake units taking into account the determined state of wear of the brake pads of the first group of wheel brake and a wear factor.
  • ELB electronic parking brake
  • a development of the method according to the invention provides that the wear factor takes into account the material properties of the brake linings of the first and second group of wheel brake units. It is thus possible, for example, for the front brake pads, which are always subjected to greater load in the service brake case, to be made of a more wear-resistant material than the brake linings of the wheel brake units of the rear axle. This different wear behavior of the respective brake pads is considered in this embodiment of the invention according to each wear factor of the respective wheel brake.
  • the invention may further or alternatively provide that the wear factor takes into account a brake force distribution on the brake linings of the first and second group of wheel brake units. As already indicated above, occur at the front brake pads higher braking forces than at the rear brake pads. According to the invention, this can be taken into account in the calculation of the wear factor for each wheel brake unit.
  • a central brake control unit detects and controls the current brake force distribution.
  • a development of the invention provides that the respectively detected by the brake control unit braking force distribution is recorded over time and taken into account for the adaptation of the wear factor. Through this measure, its load can be documented over the entire service life of a brake pad and used for the current determination of wear.
  • the wear factor takes into account a wheel load distribution or an axle load distribution with respect to the first and second group of wheel brake units.
  • the wheel load distribution or Achselastver republic has a significant impact on the currently occurring each load of individual wheel brake and thus also on the wear of the associated brake pads.
  • the Wear factor considered the drive type of the vehicle and / or a driving force distribution with respect to the individual wheels of the vehicle axles.
  • the drive type or the drive force distribution also has an effect on the wear of individual brake linings.
  • the wear factor takes into account the dimensioning of brake discs cooperating with the respective brake pads of the first and the second group of wheel brake units.
  • the dimensioning of the brake discs has significant importance for the wear occurring due to the lever forces occurring and can be considered to increase the accuracy of the wear detection.
  • the current wear factor and the actual wear respectively determined for the i5 brake linings of the first and second group of wheel brake units are stored permanently in a memory. It should be noted that the initially determined predetermined delivery path for the condition of intact brake pads remains stored in the memory until the brake pads are replaced and the brake clearance is re-measured.
  • the invention can also be used to improve the reliability of a motor vehicle.
  • the actual wear determined in each case for the brake linings of the first and second group of wheel brake units is compared at regular intervals with an operating limit value and that an optical or acoustic warning signal is output to a driver when the wear limit value is exceeded ,
  • the driver can be given in one or more stages feedback on the current state of wear of the brake pads on all Radbremsakuen so that it timely maintenance, in particular abut5 strongly worn brake pads, can cause.
  • the first group of wheel brake units can be actuated by means of an electromechanical actuator in the case of parking brake, whose feed path is determined by means of a current pulse number or / and a pulse characterizing this
  • the current pulse number can be measured, for example, in a period in which the displaceable brake lining moves between a predetermined starting position and a predetermined contact position on the brake disk.
  • the predetermined lo contact position is defined for example by a certain contact pressure, a specific operating current value or a specific operating temperature value.
  • the wear factor for the individual wheel brake units for a normal braking situation is a brake force distribution of about 2/3, in particular about 70%, of the currently applied braking force on the front wheels 2o and about 1 / 3, in particular about 30%, the currently applied braking force on the rear wheels provides.
  • the wear factor for the individual wheel brake units for a braking case involving a traction control starting from the above-mentioned normal braking a braking force of greater than about 2/3, in particular about 80%, the currently applied braking force to the front wheels and of o is less than about 1/3, in particular about 20%, the currently applied braking force on the rear wheels provides.
  • the wear factor for the individual wheel brake units for a braking event involving an electronic braking force distribution functionality provides for an individual braking force distribution for each individual wheel brake unit, for example 5 of less than approximately 2/3, in particular approximately 60%, of the currently applied braking force to the wheel brake unit Front wheels and greater than about 1/3, in particular of about 40%, the currently applied braking force on the rear wheels.
  • the percentage values of the braking force distribution indicated for the abovementioned cases are to be regarded as exemplary orientation values and may vary in practice. In particular, in the latter case of the individual brake force distribution may occur at the individual brake pads of the brake units strongly divergent braking forces and correspondingly different wear.
  • the invention further relates to a motor vehicle brake system, in particular for carrying out the method of the type described above, wherein each wheel of the motor vehicle is associated with a wheel brake, wherein further a first group of Radbremsakuen, which are mounted on the rear axle, both for the purpose of service braking can also be used for the purpose of a parking brake and further wherein a second group of Radbremsakuen, which are mounted on the front axle, is used only for the purpose of service braking, the first group of Radbremsakuen is deliverable at a parking brake by means of an actuator whose Zustellweg detected is, and wherein the motor vehicle brake system comprises an electronic control unit and a memory accessible to them.
  • the motor vehicle brake system provides that the electronic control unit actuates the actuators of the first group of wheel brake units in the event of parking braking and determines the current travel distance of the first group of wheel brake units when actuated by means of the actuators that the electronic control unit subsequently determines the determined current Delivery path of the first group of Radbremsakuen with a stored in the memory predetermined feed path compares and determined from the comparison result a wear condition of the brake pads of the first group of Radbremsakuen taking into account the predetermined Zustellwegs and the determined current Zustellwegs and that the electronic control unit, the state of wear of the brake pads second group of wheel brake units taking into account the determined state of wear of the brake pads of the first group of wheel brake units and a verse determined cheliß compositions.
  • this is formed with a means for detecting the brake force distribution to the brake pads of the first and second group of Radbremsakuen, wherein the brake control unit adjusts the wear factor taking into account the detected brake force distribution.
  • the motor vehicle brake system according to the invention can provide a means for detecting the wheel load distribution or the axle load distribution with respect to the first and second group of wheel brake units, wherein the brake control unit adapts the wear factor taking into account the detected wheel load distribution or the axle load distribution.
  • a warning signal output means which outputs a visual or audible warning signal to a driver when a predetermined wear limit value is exceeded when the respective wear determined for the brake linings of the first and second groups of wheel brake units exceeds a predetermined wear limit ,
  • a refinement of the motor vehicle brake system according to the invention provides that the wear factor for the individual wheel brake units for a normal brake application
  • a refinement of the motor vehicle brake system according to the invention provides that the wear factor for the individual wheel brake units for a normal braking situation provides a brake force distribution of about 70% of the currently applied braking force on the front wheels and about 30% of the currently applied braking force on the rear wheels.
  • this is designed with a means for traction control, wherein the wear factor for the individual Radbremsöen for a brake case with the involvement of traction control a brake force distribution of about 80% of the currently applied braking force to the front wheels and about 20% the currently applied braking force on the rear wheels provides.
  • Another embodiment of the motor vehicle brake system according to the invention provides that this also comprises a means for the electronic brake force distribution, additionally or alternatively, wherein the wear factor for each wheel ⁇ brake units for a brake case with the involvement of the electronic brake force distribution functionality an individual braking force distribution for each wheel brake unit provides, for example, about 60% of the currently applied Braking force on the front wheels and about 40% of the currently applied braking force on the rear wheels.
  • Fig. 1 is a schematic representation of a first hydraulically and electromechanically actuated brake unit with new friction linings in longitudinal section.
  • Fig. 2 is a schematic representation of the first hydraulically and electromechanically actuated brake unit with worn friction linings in longitudinal section.
  • FIG. 3 shows a flowchart in which the sequence of the method according to the invention for determining the state of wear of the brake linings of the individual brake units is shown.
  • Fig. 1 shows schematically a brake unit of a motor vehicle brake system according to the invention, which is designed as a hydraulically and electromechanically actuated in the usual manner motor vehicle disc brake.
  • the brake unit is shown in a longitudinal section and comprises a substantially U-shaped caliper 10 and arranged on the brake caliper 10 electromechanical actuator unit 12.
  • In the caliper 10 are on the two legs 10 ', 10 "two (not further illustrated guides recorded
  • the two friction linings 14, 14 ' are arranged on both sides of a brake disk 16 which is overlapped by the brake caliper 10 and cooperate with a respective side surface 16', 16 "of the brake disk 16 which is non-rotatable with a brake disk 16 only partially shown axle stub 18 of the motor vehicle is connected.
  • the friction linings 14, 14 ' are arranged in the brake caliper 10 on the brake disc 16 and away from her away.
  • this is a floating caliper arrangement, in which one of the friction linings 14 can be brought into frictional engagement with the brake disc 16 by the actuation unit 12 directly and the other brake pad 14 'by the action of a reaction force applied by the caliper 10.
  • the brake lining 14 is displaceable purely hydraulically in a manner known per se.
  • the electromechanical actuation 12 for this purpose is attached to the side of the brake caliper 10 and has an electric motor 20, which is an internal rotor motor with a stator fixedly mounted on the housing 22 and a rotor 24 rotating therein in the embodiment shown. Inside the rotor 24, an internal toothing 26 is arranged. a rotation of the rotor 24 can be transmitted to a ring 28 with external teeth, which is non-rotatably but axially displaceably arranged on a brake piston 30 which projects through the electric motor 20 through to the brake pad 14.
  • This working in the manner of a mother / Spindelanordung gear 26, 28 has a relatively high reduction and serves to implement the rotational movement of the electric motor 20 in a longitudinal movement of the brake piston 30.
  • the electric motor 20 is connected via corresponding lines to an electronic control unit ECU equipped with a computer unit CPU and a memory M for generating the control signals of the electric motor 20. From existing in the motor vehicle sensors Sl ... Sn representative signals are sent to the electronic control unit ECU for operating conditions of the motor vehicle. These are, for example, the axle load distribution, wheel slip on individual wheels, brake force distribution, etc.
  • a sensor 32 is also present, which detects the steps of the electric motor 20 based on current pulses and transmits a corresponding signal to the electronic control unit ECU.
  • a signal F representing the clamping force is generated by a force sensor 36 disposed between the brake piston 30 and the brake pad 14 and sent to the electronic control unit ECU.
  • a clamping force / time characteristic F / t characteristic curve
  • a clamping force gradient dF / dt can be determined from the signals transmitted by the force sensor 36.
  • the electronic control unit ECU supplies the drive current for the electric motor 20, it is readily possible in the electronic control unit ECU for the functional relationship between the clamping force F exerted by the vehicle brake and the current used for this or the motor steps of the electric motor 20 within a braking cycle (deliver the brake pads 14, 14 'on the brake disc 16 and then releasing the brake pads 14, 14' of the brake disc 16) to determine.
  • the method according to the invention is started in a first step S1.
  • the method according to the invention is carried out at regular time intervals during operation of a motor vehicle, for example after each start, every time the parking brake is actuated, or in each case when a vehicle is parked.
  • the brake clearance Lnew is determined for the case of undamaged brake linings. This determined brake clearance Lnew is then permanently stored in the memory M according to step S3, namely until worn brake linings are replaced by new brake linings. Steps S2 and S3 are executed only when the brake pads are brand new.
  • steps S1 and S4 to S1O are executed regularly, omitting steps S2 and S3.
  • step S4 a brake unit with an electromechanical actuator is actuated, for example in the context of an activation of the parking brake.
  • the respective delivery path is determined according to step S5. This means that the path covered by the actuator is detected or mathematically determined until the brake pad has been applied to the brake disk from an initial position in a predetermined contact position.
  • Step S6 the thus determined feed path is compared with the brake clearance Lneu stored in the memory. Occurs between the delivery route and the Brake clearance Lnew a difference, it is determined from this in step S7, the current state of wear of the relevant executed with electromechanical actuator brake unit.
  • step S8 the wear factor is read out to this brake unit.
  • the braking force distribution in a normal braking provides that about 70% of the braking force applied to the front wheels and about 30% at the rear wheels.
  • the wear factor for the individual wheel brake units for a braking event involving a traction control takes into account, for example, a brake force distribution of approximately 80% of the currently applied braking force on the front wheels and approximately 20% of the currently applied braking force on the rear wheels.
  • the wear factor for the individual wheel brake units for a braking event involving an electronic braking force distribution functionality takes into account an individual brake force distribution for each individual wheel brake unit, for example about 60% of the currently applied braking force on the front wheels and about 40% of the currently applied braking force on the rear wheels.
  • the percentage values of the braking force distribution given for the abovementioned cases are to be regarded as orientation values and may vary in practice.
  • the individual brake force distribution may occur at the individual brake pads of the brake units strongly divergent braking forces and correspondingly different wear.
  • the different loads on the individual brake units mean that the wear factors for each brake unit can differ significantly.
  • step S9 taking into account the respective wear factor, the actual state of wear of one of those brake units which are formed without an electromechanical actuator is then determined, and in which therefore no direct detection of wear can take place.
  • step S10 the brake units detected for the electromechanically operable brake units and for the non-electromechanically operable brake units are then determined stored therefrom wear states stored. These can be evaluated for documentation.
  • According to the invention can thus be based on the actually detectable Verschl sandwichzu- state of running with electromechanical actuator brake units and based on a respective individual wear factor for each brake unit, taking into account the specific conditions and wear on the respective brake unit reliably and with sufficient accuracy of the actual state of wear this without electromechanical actuator determine the brake units that have been This can ensure that the driver gets an accurate overview of the wear conditions of the brake units at all times and, if necessary, notices the initiation of required maintenance measures when a maximum state of wear is exceeded.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Braking Arrangements (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

L'invention concerne un procédé permettant de déterminer l'état d'usure de garnitures de frein sur des unités de frein sur roue d'un système de freinage d'automobile, selon lequel une unité de frein sur roue du système de freinage d'automobile est associée dans chaque cas à des roues individuelles de l'automobile. Un premier groupe d'unités de frein sur roue du système de freinage d'automobile peut s'utiliser aussi bien à des fins de freinage de service que pour enclencher un frein de stationnement. Un second groupe d'unités de frein sur roue ne sert qu'à des fins de freinage de service. Ledit procédé comprend les étapes suivantes: déterminer une course de freinage prédéfinie du premier groupe d'unités de frein sur roue, pour des garnitures de frein en bon état, actionner le premier groupe d'unités de frein sur roue,en cas d'enclenchement du frein de stationnement, au moyen d'un actionneur, déterminer la course de freinage actuelle du premier groupe d'unités de frein sur roue, lors de l'actionnement au moyen de l'actionneur, comparer la course de freinage prédéfinie à la course de freinage actuelle du premier groupe d'unités de frein sur roue, compte tenu de la course de freinage prédéfinie et de la course de freinage actuelle déterminée et déterminer un état d'usure des garnitures de frein du second groupe d'unités de frein sur roue, compte tenu de l'état d'usure déterminé des garnitures de frein du premier groupe d'unités de frein sur roue et d'un facteur d'usure.
PCT/EP2007/005692 2006-06-28 2007-06-27 Procédé pour déterminer l'état d'usure de garnitures de frein sur des unités de frein sur roue d'un système de freinage d'automobile et système de freinage d'automobile correspondant WO2008000464A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610029699 DE102006029699B4 (de) 2006-06-28 2006-06-28 Verfahren zum Bestimmen des Verschleißzustandes von Bremsbelägen an Radbremseinheiten einer Kraftfahrzeugbremsanlage und Kraftfahrzeugbremsanlage
DE102006029699.0 2006-06-28

Publications (1)

Publication Number Publication Date
WO2008000464A1 true WO2008000464A1 (fr) 2008-01-03

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ID=38624442

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Application Number Title Priority Date Filing Date
PCT/EP2007/005692 WO2008000464A1 (fr) 2006-06-28 2007-06-27 Procédé pour déterminer l'état d'usure de garnitures de frein sur des unités de frein sur roue d'un système de freinage d'automobile et système de freinage d'automobile correspondant

Country Status (2)

Country Link
DE (1) DE102006029699B4 (fr)
WO (1) WO2008000464A1 (fr)

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CN110146302A (zh) * 2019-04-29 2019-08-20 上海蔚来汽车有限公司 摩擦片磨损检测方法、装置、电子设备及计算机存储介质
CN111288100A (zh) * 2018-12-10 2020-06-16 奥的斯电梯公司 制动装置、制动装置检测方法以及电梯系统

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DE102011016126A1 (de) * 2011-04-05 2012-10-11 Lucas Automotive Gmbh Technik zum Bestimmen des Verschleißzustands eines Bremsbelags
DE102011113025A1 (de) * 2011-09-09 2013-03-14 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Bremssteuereinrichtung für eine Bremsanlage eines Schienenfahrzeugs, Bremsanlage, Schienenfahrzeug und Verfahren zum Betreiben einer Bremssteuereinrichtung
US9457782B2 (en) 2014-03-14 2016-10-04 Arvinmeritor Technology, Llc Brake system and method of control with air gap estimation
CN105151970B (zh) * 2015-09-08 2017-03-15 洛阳普凡电气自动化有限公司 一种判断提升机闸盘摩擦系数减小的在线监测装置
DE102016205961A1 (de) * 2016-04-05 2017-10-05 Kes Keschwari Electronic Systems Gmbh & Co. Kg Bremse mit symmetrischem Verschleißnachsteller
EP3251908B1 (fr) 2016-06-03 2021-01-20 Meritor Heavy Vehicle Braking Systems (UK) Limited Système de freinage et procédé de commande avec estimation d'entrefer
DE102019100183A1 (de) 2019-01-07 2020-07-09 Wabco Europe Bvba Verfahren zum Ermitteln eines Lüftspiels einer elektromechanischen Bremse sowie betreffende Bremse und Steuergerät
CN110410440B (zh) * 2019-07-31 2020-12-15 青岛方冠摩擦材料有限公司 汽车刹车片磨损检测装置
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EP4336063A1 (fr) * 2022-09-07 2024-03-13 Dellner Bubenzer AB Ensemble frein à commande électrique, procédé mis en uvre par ordinateur pour commander un ensemble frein à commande électrique, programme informatique et support de données non volatiles

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CN111288100A (zh) * 2018-12-10 2020-06-16 奥的斯电梯公司 制动装置、制动装置检测方法以及电梯系统
CN111288100B (zh) * 2018-12-10 2023-03-14 奥的斯电梯公司 制动装置、制动装置检测方法以及电梯系统
CN110146302A (zh) * 2019-04-29 2019-08-20 上海蔚来汽车有限公司 摩擦片磨损检测方法、装置、电子设备及计算机存储介质

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