DE102009027479A1 - Apparatus and method for monitoring a parking brake - Google Patents
Apparatus and method for monitoring a parking brake Download PDFInfo
- Publication number
- DE102009027479A1 DE102009027479A1 DE200910027479 DE102009027479A DE102009027479A1 DE 102009027479 A1 DE102009027479 A1 DE 102009027479A1 DE 200910027479 DE200910027479 DE 200910027479 DE 102009027479 A DE102009027479 A DE 102009027479A DE 102009027479 A1 DE102009027479 A1 DE 102009027479A1
- Authority
- DE
- Germany
- Prior art keywords
- actuator
- current
- parking brake
- brake
- detected
- 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- Withdrawn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
Images
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
-
- 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
- B60T13/74—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 electrical assistance or drive
-
- 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
- B60T13/74—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 electrical assistance or drive
- B60T13/741—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 electrical assistance or drive acting on an ultimate actuator
-
- 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
- B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
Die vorliegende Erfindung betrifft eine Vorrichtung und ein Verfahren zum Überwachen der Funktionsfähigkeit einer Feststellbremse (7, 8), die mehrere Aktuatoren (9) zum Zuspannen oder Lösen der Bremse umfasst. Gemäß der Erfindung wird die Stromaufnahme von wenigstens zwei der Aktuatoren (9) gemessen und untereinander verglichen. Bei einer zu hohen Abweichung der Strom-Messwerte oder des zeitlichen Verlaufs wird eine Fehlfunktion der Feststellbremse (7, 8) erkannt.The present invention relates to a device and a method for monitoring the functionality of a parking brake (7, 8) which comprises a plurality of actuators (9) for applying or releasing the brake. According to the invention, the power consumption of at least two of the actuators (9) is measured and compared with one another. If the deviation of the measured current values or the time curve is too great, a malfunction of the parking brake (7, 8) is detected.
Description
Die Erfindung betrifft eine Vorrichtung und ein Verfahren zum Überwachen der Funktionsfähigkeit einer Feststellbremse.The The invention relates to an apparatus and a method for monitoring the functionality a parking brake.
Stand der TechnikState of the art
Kfz-Radbremsen
mit integrierter Feststellbremse sind in aus dem Stand der Technik
in verschiedensten Ausführungen
bekannt. Eine typische Ausführungsform
einer solchen Bremse ist in
Die
Bremse
Um die Funktionsfähigkeit der Feststellbremse zu überwachen, sind verschiedene Methoden bekannt. So kann beispielsweise die Stromaufnahme eines Elektromotors überwacht werden, der die Spindel antreibt. Die Stromaufnahme des Elektromotors verläuft in einem weiten Bereich etwa linear zur Bremskraft. Anhand der Stromaufnahme lässt sich somit grundsätzlich die Funktionsfähigkeit der Feststellbremse als auch die Höhe der Bremskraft abschätzen. Diese Art der Überwachung wird allerdings durch den Fahrer beeinträchtigt, wenn dieser während eines Zuspannvorgangs den Druck moduliert, indem er das Bremspedal betätigt oder löst. In diesem Fall schwankt die Stromaufnahme des Elektromotors entsprechend, da ein Teil der Zuspannkraft durch den Fahrer aufgebracht wird. Dies kann zu einer falschen Berechnung der Bremskraft oder falschen Diagnosen bzgl. der Funktionsfähigkeit der Bremse führen.Around the functionality to monitor the parking brake, Different methods are known. For example, the current consumption of a Electric motor monitors which drives the spindle. The current consumption of the electric motor runs in one wide range approximately linear to the braking force. Based on the current consumption can be thus in principle the functionality the parking brake and the amount of braking force estimate. These Type of surveillance However, this is affected by the driver if this during a Zuspannvorgangs modulated the pressure by pressing the brake pedal or solves. In In this case, the current consumption of the electric motor fluctuates accordingly, because part of the application force is applied by the driver. This can lead to a wrong calculation of the braking force or wrong Diagnoses regarding the functionality lead the brake.
Es ist daher die Aufgabe der vorliegenden Erfindung ein Verfahren zum Überwachen einer Feststellbremse zu schaffen, das durch Druckänderungen weniger stark beeinträchtigt wird.It Therefore, the object of the present invention is a method for monitoring to create a parking brake caused by pressure changes less affected becomes.
Diese
Aufgabe wird erfindungsgemäß durch die
Mermale der Ansprüche
1 oder 7 gelöst.
Weitere Ausgestaltungen der Erfindung sind in den Unteransprüchen wiedergegeben.These
The object is achieved by the
Mermal of
Ein wesentlicher Aspekt der Erfindung besteht darin, die Stromaufnahme von wenigstens zwei Aktuatoren der Feststellbremse zu messen, und die Strom-Messwerte oder deren zeitlichen Verlauf miteinander zu vergleichen. Bei einer zu hohen Abweichung der Messwerte wird eine Fehlfunktion der Feststellbremse erkannt.One essential aspect of the invention is the power consumption to measure at least two actuators of the parking brake, and the current measurements or their time course with each other to compare. If the measured values deviate too much, a Malfunction of the parking brake detected.
Im Rahmen der Strom-Überwachung können beispielsweise ein oder mehrere Stromwerte, ein Stromgradient oder ein Zeitpunkt, an dem die Stromaufnahme einen vorgegebenen Schwellenwert übersteigt, gemessen werden. Die Messwerte verschiedener Aktuatoren werden miteinander verglichen und bei einer zu hohen Abweichung der Messwerte eine Fehlfunktion der Feststellbremse erkannt. Es können auch mehrere der genannten Messgrößen überwacht werden.in the Frame of power monitoring for example one or more current values, a current gradient or a time, where the current consumption exceeds a predetermined threshold, be measured. The measured values of different actuators become one with each other compared and at a too high deviation of the measured values a malfunction the parking brake detected. It can also be several of the above Measured variables monitored become.
Gemäß einer bevorzugten Ausführungsform der Erfindung wird die wenigstens eine Messgröße auch in Bezug auf deren Plausibilität geprüft. Liegt ein Messwert außerhalb eines vorgegebenen Wertebereichs, wird ebenfalls eine Fehlfunktion der Feststellbremse erkannt. Steigt beispielsweise der Strom innerhalb einer vorgegebenen Zeitdauer nicht ausreichend stark an, wird eine Fehlfunktion erkannt. In gleicher Weise könnte auch der Gradient oder ein anderes Merkmal auf Plausibilität überprüft werden.According to one preferred embodiment of Invention, the at least one measured variable also with respect to their plausibility checked. If a reading is outside a predetermined range of values, also becomes a malfunction the parking brake detected. For example, if the current increases within becomes insufficiently strong for a given period of time becomes a Malfunction detected. In the same way could also be the gradient or another feature to be checked for plausibility.
Eine erfindungsgemäße Vorrichtung zum Überwachen der Funktionsfähigkeit einer Feststellbremse umfasst eine Sensorik zum Messen der Stromaufnahme wenigstens zweier Aktuatoren, sowie ein Steuergerät mit einem Algorithmus zum Auswerten der Sensorsignale und Feststellen einer Fehlfunktion, wie vorstehend beschrieben wurde.A inventive device to monitor the functionality a parking brake comprises a sensor for measuring the power consumption at least two actuators, and a control unit with a Algorithm for evaluating the sensor signals and detecting a Malfunction as described above.
Bei den Aktuatoren der Feststellbremse handelt es sich typischerweise um Elektromotoren, die z. B. an den Radbremsen der Hinterachse angeordnet sind (sog. Motor an Caliper).at the actuators of the parking brake are typically to electric motors, the z. B. are arranged on the wheel brakes of the rear axle (so-called engine to Caliper).
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Ausführungsbeispiele, aus denen sich weitere erfinderische Merkmale ergeben können, auf die die Erfindung aber in ihrem Umfang nicht beschränkt ist, sind in den Zeichnungen dargestellt. Es zeigen:Embodiments, which may give rise to further inventive features on but the invention is not limited in scope, are shown in the drawings. Show it:
Ausführliche Beschreibung der ErfindungDetailed description of the invention
Bezüglich der
Erläuterung
von
In
den
Grundsätzlich gelten
für die
Fehlererkennung folgende Überlegungen:
Wenn ein bestimmtes Stromverhalten, z. B. eine Schwankung des Stroms, bei
mehreren Aktuatoren gleichzeitig auftritt, ist davon auszugehen
dass dieses Verhalten durch den Fahrer oder ein Bremsassistenten
verursacht wurde, der bzw. das den Bremsdruck variiert. Tritt das
anormale Verhalten dagegen nur bei einem Aktuator
Auch
wenn die Differenz der beiden Messwerte in Schritt
Claims (8)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910027479 DE102009027479A1 (en) | 2009-07-06 | 2009-07-06 | Apparatus and method for monitoring a parking brake |
PCT/EP2010/056171 WO2011003644A1 (en) | 2009-07-06 | 2010-05-06 | Device and method for monitoring a parking brake |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910027479 DE102009027479A1 (en) | 2009-07-06 | 2009-07-06 | Apparatus and method for monitoring a parking brake |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102009027479A1 true DE102009027479A1 (en) | 2011-01-13 |
Family
ID=42562701
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200910027479 Withdrawn DE102009027479A1 (en) | 2009-07-06 | 2009-07-06 | Apparatus and method for monitoring a parking brake |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102009027479A1 (en) |
WO (1) | WO2011003644A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012031803A1 (en) * | 2010-09-10 | 2012-03-15 | Robert Bosch Gmbh | Method for determining a malfunction in a service or parking brake in a vehicle, regulating and control appliance for carrying out said method, and parking brake comprising such a regulating and control appliance |
WO2013007414A1 (en) * | 2011-07-08 | 2013-01-17 | Robert Bosch Gmbh | Method, regulating and/or control unit, and parking brake having a regulating and/or control unit of said type for adjusting a parking brake in a vehicle |
WO2016055194A1 (en) * | 2014-10-07 | 2016-04-14 | Robert Bosch Gmbh | Braking device for a motor vehicle, and method for controlling the braking device |
DE102017009096B4 (en) | 2016-10-18 | 2023-04-06 | Hl Mando Corporation | ELECTRONIC PARKING BRAKE SYSTEM AND CONTROL METHOD THEREOF |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012213289A1 (en) * | 2012-07-27 | 2014-01-30 | Robert Bosch Gmbh | Method for providing the clamping force generated by a parking brake |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19526645B4 (en) * | 1995-07-21 | 2008-12-18 | Robert Bosch Gmbh | Electromotive wheel brake for vehicles |
DE19548560C5 (en) * | 1995-12-23 | 2010-11-11 | Robert Bosch Gmbh | Method and device for controlling the brake system of a vehicle |
DE102006052810B4 (en) * | 2006-11-09 | 2021-09-02 | Robert Bosch Gmbh | Method for estimating a force development of an actuator that can be connected to a supply voltage |
-
2009
- 2009-07-06 DE DE200910027479 patent/DE102009027479A1/en not_active Withdrawn
-
2010
- 2010-05-06 WO PCT/EP2010/056171 patent/WO2011003644A1/en active Application Filing
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012031803A1 (en) * | 2010-09-10 | 2012-03-15 | Robert Bosch Gmbh | Method for determining a malfunction in a service or parking brake in a vehicle, regulating and control appliance for carrying out said method, and parking brake comprising such a regulating and control appliance |
US9511757B2 (en) | 2010-09-10 | 2016-12-06 | Robert Bosch Gmbh | Method for determining a failure in a service or parking brake in a vehicle, regulating or control unit for carrying out the method, and parking brake having such a regulating or control unit |
WO2013007414A1 (en) * | 2011-07-08 | 2013-01-17 | Robert Bosch Gmbh | Method, regulating and/or control unit, and parking brake having a regulating and/or control unit of said type for adjusting a parking brake in a vehicle |
CN103635366A (en) * | 2011-07-08 | 2014-03-12 | 罗伯特·博世有限公司 | Method, regulating and/or control unit, and parking brake having a regulating and/or control unit of said type for adjusting a parking brake in a vehicle |
CN103635366B (en) * | 2011-07-08 | 2017-05-31 | 罗伯特·博世有限公司 | Adjust method, regulation and/or controller and the EPB of EPB |
WO2016055194A1 (en) * | 2014-10-07 | 2016-04-14 | Robert Bosch Gmbh | Braking device for a motor vehicle, and method for controlling the braking device |
US10471946B2 (en) | 2014-10-07 | 2019-11-12 | Robert Bosch Gmbh | Braking device for a motor vehicle, and method for controlling the braking device |
DE102017009096B4 (en) | 2016-10-18 | 2023-04-06 | Hl Mando Corporation | ELECTRONIC PARKING BRAKE SYSTEM AND CONTROL METHOD THEREOF |
Also Published As
Publication number | Publication date |
---|---|
WO2011003644A1 (en) | 2011-01-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE19517708B4 (en) | Method and device for electronically controlling the brake system of a vehicle | |
EP1881312B1 (en) | Roller brake test stand | |
EP0721409B1 (en) | Method and device for determining the applied pressure of a vehicle brake system | |
DE102016208613A1 (en) | Brake device for a motor vehicle and method for detecting damage to the brake device | |
DE102009027479A1 (en) | Apparatus and method for monitoring a parking brake | |
DE102014202173A1 (en) | Method for releasing an automatic parking brake | |
DE102008053424A1 (en) | Detection and compensation of traction influences | |
DE102016215293A1 (en) | Method for determining a leak in a hydraulic brake system | |
DE102007004604A1 (en) | Electromechanical disc brake e.g. wedge brake, operational parameter e.g. lifting clearance, determining method for motor vehicle involves bringing brake lining into contact points with brake disk for detecting position of points | |
DE102014202198A1 (en) | Method for checking an automatic parking brake system | |
EP2630459B1 (en) | Method for securing a vehicle to a roller-type test stand | |
DE3415193C2 (en) | ||
EP3331737A1 (en) | Method for verifying the parking brake force in a vehicle | |
EP3817956A1 (en) | Method for controlling the braking power in an electrohydraulic braking system of a motor vehicle | |
DE102010043887A1 (en) | System and method for brake circuit failure detection | |
EP2753517B1 (en) | Method for monitoring a wheel of a rail vehicle | |
DE19736997A1 (en) | Wheel brake game adjustment method e.g. for motor vehicles | |
DE102013201367A1 (en) | Method for determining braking force of i.e. automatic parking brake of vehicle, involves replacing fault current measured value with replacement value when incorrect current measurement value is detected | |
WO2015074736A1 (en) | Checking of the installation position of axle modulators on the basis of disturbances in speed signals | |
DE102015217255A1 (en) | Method and device for determining an air pressure | |
DE102009023836A1 (en) | Control device for use in brake system for controlling axle assembly of e.g. commercial vehicle, has control output outputting control signal, where control output is not initiated during braking process when variable lies beyond range | |
CH630304A5 (en) | Method and device for controlling the circumferential speed of a plurality of vehicle wheels | |
WO2023066603A1 (en) | Control device and method for increasing the measurement accuracy of an on-board axle load measurement system | |
DE102022116576A1 (en) | Method for adjusting an application pressure of a vehicle brake and the relevant vehicle brake | |
DE102014202154A1 (en) | Method for providing a clamping force for an automatic parking brake |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20120201 |