WO2005058662A1 - Verfahren zur anhaltewegverkürzung - Google Patents
Verfahren zur anhaltewegverkürzung Download PDFInfo
- Publication number
- WO2005058662A1 WO2005058662A1 PCT/EP2004/012771 EP2004012771W WO2005058662A1 WO 2005058662 A1 WO2005058662 A1 WO 2005058662A1 EP 2004012771 W EP2004012771 W EP 2004012771W WO 2005058662 A1 WO2005058662 A1 WO 2005058662A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- braking
- vehicle
- prepared
- driver
- assistance system
- Prior art date
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
- B60T8/32—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
- B60T8/88—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 with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
- B60T8/885—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 with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means using electrical circuitry
-
- 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
- B60T7/22—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger initiated by contact of vehicle, e.g. bumper, with an external object, e.g. another vehicle, or by means of contactless obstacle detectors mounted on the vehicle
-
- 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
- B60T2201/02—Active or adaptive cruise control system; Distance control
-
- 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
- B60T2201/03—Brake assistants
-
- 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
- B60T2201/12—Pre-actuation of braking systems without significant braking effect; Optimizing brake performance by reduction of play between brake pads and brake disc
-
- 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
- B60T2270/00—Further aspects of brake control systems not otherwise provided for
- B60T2270/40—Failsafe aspects of brake control systems
- B60T2270/413—Plausibility monitoring, cross check, redundancy
Definitions
- the invention relates to a method for shortening the stopping distance of a vehicle, in which braking is prepared when a predetermined event occurs.
- the driver When braking in an emergency, the driver must first overcome the brake air gap until brake pressure can be built up to cause the vehicle to decelerate to any significant extent. This takes time and extends the stopping distance. To reduce this so-called swell time, the brake can be pre-filled with a low pressure that does not yet cause a noticeable delay. When the driver actuates the brake, there is no longer any need to reduce air play.
- An event when the brake is primed represents, for example, the rapid removal of the driver's foot from the accelerator pedal. Many situations in which it is sensible to prime the brake or to build up a certain brake pressure are triggered by this event or the monitoring of the accelerator pedal is not detected.
- EP 1081004 A2 discloses a detection system for a vehicle which detects obstacles in the direction of travel or close to the direction of travel of the vehicle. Sensors attached to the vehicle provide characteristic parameters for the state c3 of the vehicle. Furthermore, sensors are the brake pedal and assigned to the accelerator pedal. A control unit uses the data supplied by the detection system to determine whether braking is necessary. Furthermore, the control unit determines a desired “stand-by brake pressure”. A shortening of the stopping distance can therefore be achieved by this system if objects are recognized in the apron of the vehicle.
- the object of the present invention is to develop a method of the type mentioned at the outset in such a way that it is possible to shorten the stopping distance in additional driving situations.
- this object is achieved in that, in a method of the type mentioned at the outset, the braking is prepared when a driving situation which is implausible for a driver assistance system occurs.
- Driver assistance systems are used, for example, to control the distance to a vehicle in front.
- a driver assistance system regulates the vehicle speed to a setting speed set by the driver, provided that no stationary or slower moving object is detected in the apron of the vehicle. If such an object is recognized, the distance between the vehicle and the vehicle in front is regulated and / or the vehicle is guided behind the vehicle in front.
- An implausible driving situation arises, for example, in the event of a sudden loss of object if the distance to a vehicle traveling ahead, which is the relevant object, is automatically regulated. If such an object loss is detected, a dangerous situation may have arisen.
- braking is prepared in such a case so that a short stopping distance is achieved when braking is required. A loss of property also arises "if Due to dirty sensors, an object in front can no longer be detected.
- Another example of an implausible driving situation is the swerving of a vehicle on which the driver assistance system was based.
- the driver assistance system must first form a new relevant object, e.g. the object moving in front of the vehicle to be veered out.
- a stationary obstacle suddenly appears, for example a vehicle standing in a traffic jam in front of a vehicle that is about to veer away, this leads to an implausible driving situation that cannot be resolved by the driver assistance system.
- stopping distance can also be reduced in driving situations in which the driver's reaction cannot be used to infer an emergency braking situation.
- braking can be prepared before the driver takes his foot off the accelerator pedal.
- Driving according to the invention is not a safety-critical application, since braking is only prepared. There is no noticeable delay. It is particularly advantageous that the reaction speed of the brake system is improved when an assistance system is switched off and vehicle control is taken over by the driver. A particular advantage is the use of the method in dynamic driving situations that place higher demands on the driver's reactions, such as in stop & go operation or in city traffic. The method according to the invention can be easily implemented without the need for additional hardware components on a vehicle.
- a pre-braking pressure is generated in preparation for braking. Such a pre-braking pressure has the effect that the brake clearance is overcome and that the brake clearance no longer has to be reduced when the driver actuates the brake. The braking system therefore reacts to the driver's braking command considerably faster.
- a speed-dependent pre-braking pressure is generated.
- a higher pre-braking pressure can be generated because the driver perceives less braking of the vehicle less strongly.
- the pre-braking pressure is preferably selected in such a way that the clearance of the brake is overcome without any noticeable braking being carried out.
- Braking can also be prepared if the driver is prompted by a driver assistance system to take over vehicle control and / or to brake.
- the request to take over vehicle control occurs, for example, when the vehicle speed falls below a switch-on threshold of the driver assistance system below which the assistance system can no longer support the driver. Such a low speed can mean that the vehicle must be braked even more. Filling the brakes shortens the braking distance in such a situation.
- Braking is advantageously prepared when a driver assistance system is deactivated. If, for example, an object relevant to the driver assistance system is lost, the driver assistance system is at least temporarily deactivated. fourth, as long as a new relevant object is searched. During this time interval, a situation may occur that requires braking. It is also conceivable that an assistance system can deactivate itself because a situation has occurred which it cannot cope with, for example when a vehicle in front swings out and the vehicle is suddenly in the immediate vicinity of an end of a traffic jam. In such a case, rapid braking is required and the stopping distance can be shortened considerably by initiating braking. Braking can also be initiated if the driver deactivates the driver assistance system.
- objects are detected at least in advance of the vehicle. " If an object is detected in front of the vehicle, ie in the direction of travel - in front of the vehicle, an appropriate evaluation can be used to determine whether braking may be necessary. In such a case, braking can be prepared regardless of whether an assistance radio is used ion is activated or deactivated.
- the distance and / or the relative speed and / or the relative acceleration to an object is determined in the apron of the vehicle, and braking is prepared if a reference distance, a reference relative speed or a reference acceleration is undershot or exceeded.
- the distance and the speeds are preferably measured by so-called short-range radar sensors. If the critical approach of an object is recognized, braking can be prepared, in particular the brakes can be automatically prefilled. Since this does not cause any noticeable delays The braking can also be prepared if no assistance systems are active.
- the method according to the invention can be implemented in software or hardware and can be carried out by an arithmetic unit that has been appropriately programmed.
- a top view of a three-lane road 1 is shown, on which the vehicle 2 is traveling in the direction of travel 3.
- the driver of the vehicle 2 is supported by a driver assistance system that regulates the distance between the vehicle 2 and the vehicle 4 in front, in such a way that a critical, speed-dependent minimum distance is not undershot.
- a driver assistance system that regulates the distance between the vehicle 2 and the vehicle 4 in front, in such a way that a critical, speed-dependent minimum distance is not undershot.
- the driver assistance system is deactivated when the vehicle 4 swings out onto the secondary lane 8 in the direction of the arrow 7.
- the driver assistance system prompts the driver to take over the vehicle because a situation has arisen that the driver assistance system cannot resolve.
- the driver has little time to bring the vehicle 2 to a stop before the end of the traffic jam. Therefore Braking of the vehicle 2 is prepared by generating a low brake pressure to cope with the air play of the brake at the same time as the takeover request is issued, so that the stopping distance of the vehicle
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
- Traffic Control Systems (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006540258A JP2007512172A (ja) | 2003-11-26 | 2004-11-11 | 停止距離の短縮方法 |
US10/580,212 US20070069578A1 (en) | 2003-11-26 | 2004-11-11 | Method for shortening a stopping distance |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10355219A DE10355219A1 (de) | 2003-11-26 | 2003-11-26 | Verfahren zur Anhaltewegverkürzung |
DE10355219.7 | 2003-11-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005058662A1 true WO2005058662A1 (de) | 2005-06-30 |
Family
ID=34625261
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/012771 WO2005058662A1 (de) | 2003-11-26 | 2004-11-11 | Verfahren zur anhaltewegverkürzung |
Country Status (4)
Country | Link |
---|---|
US (1) | US20070069578A1 (de) |
JP (1) | JP2007512172A (de) |
DE (1) | DE10355219A1 (de) |
WO (1) | WO2005058662A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011000937A (ja) * | 2009-06-17 | 2011-01-06 | Toyota Motor Corp | 走行支援装置 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004030464A1 (de) * | 2004-06-24 | 2006-01-19 | Adam Opel Ag | Bremssystem mit EBS und "prefill"-Funktion sowie Verfahren zur elektronischen Bremsregelung |
DE102009058154A1 (de) * | 2009-12-12 | 2011-06-16 | Wabco Gmbh | Fahrerassistenzsystem für ein Fahrzeug, insbesondere Nutzfahrzeug, sowie Verfahren zum Steuern eines Bremssystems |
EP3540257B1 (de) * | 2013-08-15 | 2022-07-20 | Meritor Heavy Vehicle Braking Systems (UK) Limited | Verfahren zum einstellen einer bremse |
DE102015012378A1 (de) * | 2015-09-21 | 2017-03-23 | Wabco Gmbh | Verfahren zum Einstellen von Bremsdrücken eines Kraftfahrzeugs, Bremsanlage zur Durchführung des Verfahrens sowie Kraftfahrzeug |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19607048A1 (de) * | 1996-02-24 | 1997-08-28 | Teves Gmbh Alfred | Bremsanlagen für ein motorgetriebenes Kraftfahrzeug und Verfahren zum Steuern dieser Bremsanlage |
DE19734567A1 (de) * | 1997-07-18 | 1999-01-21 | Itt Mfg Enterprises Inc | Vorrichtung und Verfahren zum Ansteuern einer Kraftfahrzeugbremsanlage |
DE19734005A1 (de) * | 1997-08-06 | 1999-02-11 | Itt Mfg Enterprises Inc | Vorrichtung zur Verringerung des Bremswegs bei Kraftfahrzeugen |
DE19859602A1 (de) * | 1998-12-23 | 2000-06-29 | Continental Teves Ag & Co Ohg | Vorrichtung und Verfahren zur Verringerung des Bremswegs von Kraftfahrzeugen |
WO2003006290A1 (de) * | 2001-07-11 | 2003-01-23 | Robert Bosch Gmbh | Verfahren und vorrichtung zur automatischen steuerung der verzögerungseinrichtung eines fahrzeugs |
DE10203511A1 (de) * | 2002-01-30 | 2003-08-07 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur prädiktiven Fahrdynamikregelung bezüglich der Kurvenkontrolle |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6948577B2 (en) * | 2001-11-06 | 2005-09-27 | Honda Giken Kogyo Kabushiki Kaisha | Electric vehicle |
DE10237714A1 (de) * | 2002-08-17 | 2004-02-26 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur automatischen Einleitung eines Notbremsvorgangs bei Kraftfahrzeugen |
-
2003
- 2003-11-26 DE DE10355219A patent/DE10355219A1/de not_active Withdrawn
-
2004
- 2004-11-11 WO PCT/EP2004/012771 patent/WO2005058662A1/de active Application Filing
- 2004-11-11 US US10/580,212 patent/US20070069578A1/en not_active Abandoned
- 2004-11-11 JP JP2006540258A patent/JP2007512172A/ja active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19607048A1 (de) * | 1996-02-24 | 1997-08-28 | Teves Gmbh Alfred | Bremsanlagen für ein motorgetriebenes Kraftfahrzeug und Verfahren zum Steuern dieser Bremsanlage |
DE19734567A1 (de) * | 1997-07-18 | 1999-01-21 | Itt Mfg Enterprises Inc | Vorrichtung und Verfahren zum Ansteuern einer Kraftfahrzeugbremsanlage |
DE19734005A1 (de) * | 1997-08-06 | 1999-02-11 | Itt Mfg Enterprises Inc | Vorrichtung zur Verringerung des Bremswegs bei Kraftfahrzeugen |
DE19859602A1 (de) * | 1998-12-23 | 2000-06-29 | Continental Teves Ag & Co Ohg | Vorrichtung und Verfahren zur Verringerung des Bremswegs von Kraftfahrzeugen |
WO2003006290A1 (de) * | 2001-07-11 | 2003-01-23 | Robert Bosch Gmbh | Verfahren und vorrichtung zur automatischen steuerung der verzögerungseinrichtung eines fahrzeugs |
DE10203511A1 (de) * | 2002-01-30 | 2003-08-07 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur prädiktiven Fahrdynamikregelung bezüglich der Kurvenkontrolle |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011000937A (ja) * | 2009-06-17 | 2011-01-06 | Toyota Motor Corp | 走行支援装置 |
Also Published As
Publication number | Publication date |
---|---|
DE10355219A1 (de) | 2005-06-30 |
US20070069578A1 (en) | 2007-03-29 |
JP2007512172A (ja) | 2007-05-17 |
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