WO2001042070A1 - Verfahren und vorrichtung zur einstellung der brems- und/oder antriebswirkung an den rädern eines kraftfahrzeugs - Google Patents
Verfahren und vorrichtung zur einstellung der brems- und/oder antriebswirkung an den rädern eines kraftfahrzeugs Download PDFInfo
- Publication number
- WO2001042070A1 WO2001042070A1 PCT/DE2000/004342 DE0004342W WO0142070A1 WO 2001042070 A1 WO2001042070 A1 WO 2001042070A1 DE 0004342 W DE0004342 W DE 0004342W WO 0142070 A1 WO0142070 A1 WO 0142070A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wheels
- sensors
- wheel
- braking
- setting
- Prior art date
Links
- 230000000694 effects Effects 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000007547 defect Effects 0.000 claims description 30
- 230000001133 acceleration Effects 0.000 claims description 29
- 230000004044 response Effects 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000001419 dependent effect Effects 0.000 claims description 6
- 230000002950 deficient Effects 0.000 abstract description 19
- 230000000875 corresponding effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- 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
-
- 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
- B60T2240/00—Monitoring, detecting wheel/tire behaviour; counteracting thereof
- B60T2240/08—Spare wheel detection; Adjusting brake control in case of spare wheel use
-
- 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
- B60T2270/402—Back-up
-
- 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
- B60T2270/416—Wheel speed sensor failure
Definitions
- the invention relates to methods and devices for adjusting the braking and / or driving effect on the wheels of a motor vehicle with the features of the independent claims.
- Such systems are known, for example, as anti-lock control systems, traction control systems or driving stability systems. These systems have in common that the setting of the braking and or driving effect on the vehicle wheels is at least dependent on the detected wheel speeds. These wheel speeds or wheel speeds are generally detected by wheel speed sensors. Emergency measures must be provided in the event that one or more wheel speed sensors are defective.
- DE 34 17 019 AI shows a circuit arrangement for a slip-controlled vehicle brake system, the brake pressure control on the wheel with the faulty sensor being dependent on the rotational behavior of the same-side front wheel in the event of a failure or a fault in a rear wheel speed sensor. It is known from EP 0 814 983 B1 that, in the event of a fault in a rear wheel speed sensor signal, The driving speed reference signal or the driving speed signal itself is set for the defective speed signal.
- the invention relates to methods and devices for adjusting the braking and or driving effect on the wheels of a motor vehicle with at least four wheels arranged on at least two axles. Sensors are assigned to these wheels, which detect rotary movements of the wheels. The setting of the braking and or driving effect is made at least as a function of the output signals of these sensors. Furthermore, it is determined according to the invention whether a spare wheel, ie a wheel that has a smaller diameter than the other wheels, is mounted. Defects in the sensors are also determined. In response to the detection of a defect in a sensor, the setting of the braking and or driving effect on the wheel of one axle assigned to this sensor is carried out as a function of the detected rotational movement on the same-sided wheel of another axle.
- the essence of the invention is that the replacement by the same-side wheel speed sensor is only carried out if it is determined that this same-side wheel is not a spare wheel.
- the quality of the replacement measure is increased. If the wheel on the same side were a spare wheel, the replacement signal for the failed sensor would represent an incorrect rotary movement on the wheel on which the sensor failed.
- the sensor signal on the same-sided wheel of the other axle is only used as a replacement if it is ensured that it is not a replacement wheel. If, however, a spare wheel is mounted on the other axle on the same side as the failed sensor, then according to an advantageous embodiment of the invention, the output signal of the sensor on the other wheel of the same axle is used as the backup signal.
- the setting of the braking and or driving effect on the wheel of one axle assigned to this sensor is carried out as a function of the detected rotational movement on the other wheel of the same axle, if it is determined that the same-sided wheel another axle is a spare wheel. In this way, an effective emergency measure is achieved, even if a spare wheel is mounted on the same-sided wheel.
- a further embodiment of the invention is based on the fact that at least one wheel is driven by a drive unit via the drive train of the motor vehicle.
- a rotation quantity is detected, which represents a rotary movement in the drive train.
- This rotational variable can be, for example, the output speed of the drive unit, in general the vehicle engine, and / or the input and / or output speed of a transmission arranged in the auxiliary line represent.
- the essence of this embodiment is that in response to the detection of a defect in at least two sensors, the setting of the braking and or driving effect on the wheels assigned to these sensors is carried out as a function of the detected turning quantity. According to this embodiment, the case is advantageously taken into account in which two speed sensors have a defect.
- a turning size in the drive train is used as a replacement size.
- a corresponding action in the drive train speed transmission ratio and / or efficiency of the drive train and / or a slip of a drive train in the on ⁇ arranged clutch and / or the operating states can withstand a located in the drive train torque converter will be considered.
- an acceleration variable representing the longitudinal vehicle acceleration is detected. Defects in the speed sensors are also determined here.
- the essence of this variant of the invention consists in that, in response to the determination of a defect in a sensor, the setting of the braking and or driving effect on the wheel of an axle assigned to this sensor is carried out as a function of the detected acceleration variable.
- the acceleration variable is integrated and the integrated acceleration variable is used as a substitute. In this way, the longitudinal acceleration leads to a suitable replacement size for the wheel rotation.
- the acceleration variable and / or the integrated acceleration variable is corrected in the longitudinal direction depending on the angle of inclination of the vehicle.
- a rotational quantity is also detected, which represents a rotational movement in the drive train. Defects in the sensors are also determined here. The essence of this variant is that in response to the detection of a defect in a sensor, the setting of the braking and or driving effect on the wheels assigned to these sensors is carried out as a function of the detected speed variable.
- FIG. 1 shows an overview block diagram of the invention.
- Figures 2, 3, 4 and 5 disclose flowcharts of various embodiments of the invention.
- FIG. 1 schematically shows a vehicle with the vehicle gradients lOlij.
- Speed sensors 105 ⁇ j and wheel brake units 106ij are attached to the vehicle wheels lOlij.
- the wheel speed sensors 105ij pass on their output signals Nij to the control unit 104.
- control signal Bij for the wheel brake units IO613 is formed at least as a function of the wheel speed values Nij.
- Nij slip values for the individual vehicle wheels lOlij are formed, whereupon the braking effect on the individual vehicle wheels is set by the signals Bij in such a way that a certain braking and or driving slip is not exceeded.
- the drive train of the vehicle is outlined in FIG.
- the vehicle engine is marked with the reference symbol 103, the output power or output torque or output speeds of which can be controlled or regulated by the control signal A by means of the control unit 104.
- the output speed Nmot of the engine 103 is detected by the speed sensor 107 and passed on to the control device 104.
- the vehicle engine 103 is connected to the transmission 105 via the clutch 103a.
- the current operating state of the clutch, in particular the clutch slip, is fed to the control unit 104 by the signal K.
- the momentary gear ratio of the gear 105 is fed to the control unit 104 with the signal G.
- the gear 105 is in turn connected to the drive wheels on the rear axle via the differential gear 102.
- the reference numeral 108 denotes an acceleration sensor which detects the longitudinal vehicle acceleration and supplies a corresponding acceleration signal a1 to the control unit 104.
- FIG. 2 shows schematically the setting of the braking and or driving effect on the vehicle wheels 10lj by means of the control unit 104.
- the wheel speed signals Nij and further signals are recorded in the following step 202.
- the control signals for the wheel brakes 106ij (control signal Bij) and the control signal A for the vehicle engine 103 are formed as a function of the detected wheel speed signals Nij. This is indicated in step 203 by the functional dependency F and G.
- the sequence shown in FIG. 2 is started again.
- control signals Bij and A are described in a variety of ways in the prior art and will not be described in more detail here.
- FIG. 3 shows a first embodiment of the invention.
- the wheel speeds Nij, the engine speed Nmot and other variables are recorded in step 302.
- defects on the wheel speed sensors 105ij are determined. This determination can be found in a variety of ways in the prior art and will not be described in more detail here. For example, the individual wheel speed values Nij can be checked for implausible values.
- step 304 it is determined whether a spare or emergency wheel is mounted on one of the vehicle wheels. This determination can also be found in the prior art. For this purpose, the individual wheel speed values are compared with the vehicle speed, for example. If one of the wheels has an increased speed value over a longer period of time, it can be concluded that this wheel is a spare or emergency wheel.
- step 303 The result of step 303 is queried in query 305. If no sensor is defective, the process proceeds directly to end step 311. However, if it is determined in step 305 that a sensor is defective, a query is made in step 306 as to whether more than one sensor has a defect. is if this is not the case, if only one sensor is defective, a query is made in step 307 whether an emergency wheel is mounted on the other axle on the same side of the vehicle as the defective sensor. If the wheel on the same side is not an emergency wheel, the wheel speed of the defective sensor is replaced in step 308 by the output signal of the sensor on the same side.
- step 309 the output signal of the defective sensor is replaced by the output signal of the sensor with the same axis.
- the output signals of the defective sensors are replaced in step 310 by a correspondingly prepared engine speed Nmot.
- the overall gear ratio Iges of the drive train and the efficiency ⁇ of the drive train must be taken into account.
- it is a vehicle in which the wheels of the rear axle are driven.
- the total gear ratio Iges between the vehicle engine 103 and the rear wheels 101hl and lOlhr is thus predetermined by the gear ratio Igang of the transmission 105 (signal G in FIG. 1), by the gear ratio Idiff of the differential gear 102 and by the efficiency ⁇ :
- Iges Igang * Idiff * ⁇
- step 310 In the case of a slipping clutch or a torque converter, the clutch slip or converter slip must be taken into account in step 310 (signal K in FIG. 1).
- FIG. 4 shows a second embodiment of the invention using an exemplary embodiment.
- the wheel speeds Nij and the output signal al of the longitudinal acceleration sensor 108 are detected in step 402.
- the longitudinal vehicle acceleration al is integrated to the longitudinal vehicle speed V.
- V ⁇ al * dt
- step 404 sensor defects are determined, whereupon a query is made in step 405 as to whether a sensor is defective. If no sensor is defective, the process moves immediately to final step 407. However, if a sensor is defective, the output signal of the defective sensor is replaced by the longitudinal vehicle speed V determined from the longitudinal vehicle acceleration.
- step 503 sensor defects are again determined and in step 504 a query is made as to whether a sensor is defective. If no sensor is defective, the process moves to final step 506. However, if it is determined in step 504 that a sensor is defective, the output signal of the defective sensor is replaced by the correspondingly prepared engine speed Nmot. For the preparation of the engine speed, reference should be made to the description of block 310 (FIG. 3).
- a transmission input speed or transmission output speed can of course also be used in step 310 or 505.
- a fallback level for an anti-lock braking system there are different possibilities for a fallback level for an anti-lock braking system.
- a traction slip system an electronic brake force distribution or other control systems in the event of a speed sensor failure.
- the current control In the event of a speed failure, it is possible for the current control to be completed at a plausible wheel speed or to be carried out with a reduced control quality, so that shorter braking distances and more stable driving behavior are achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/913,007 US6554376B2 (en) | 1999-12-08 | 2000-12-06 | Method and device for adjusting the braking and/or driving effect on the wheels of a motor vehicle |
EP00993313A EP1152938A1 (de) | 1999-12-08 | 2000-12-06 | Verfahren und vorrichtung zur einstellung der brems- und/oder antriebswirkung an den rädern eines kraftfahrzeugs |
KR1020017009980A KR20010093335A (ko) | 1999-12-08 | 2000-12-06 | 차량 휘일에서의 제동 및/또는 구동 효과를 조정하기 위한방법 및 장치 |
JP2001543381A JP2003516272A (ja) | 1999-12-08 | 2000-12-06 | 自動車の車輪におけるブレーキ作用および/または駆動作用の調節方法および装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19959039 | 1999-12-08 | ||
DE19959039.7 | 1999-12-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001042070A1 true WO2001042070A1 (de) | 2001-06-14 |
Family
ID=7931775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2000/004342 WO2001042070A1 (de) | 1999-12-08 | 2000-12-06 | Verfahren und vorrichtung zur einstellung der brems- und/oder antriebswirkung an den rädern eines kraftfahrzeugs |
Country Status (6)
Country | Link |
---|---|
US (1) | US6554376B2 (de) |
EP (1) | EP1152938A1 (de) |
JP (1) | JP2003516272A (de) |
KR (1) | KR20010093335A (de) |
DE (1) | DE10060568A1 (de) |
WO (1) | WO2001042070A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008147579A1 (en) * | 2007-05-21 | 2008-12-04 | Goodrich Corporation | Fault tolerant aircraft braking control using alternate wheel speed information |
EP3363697A1 (de) * | 2017-02-21 | 2018-08-22 | Goodrich Corporation | Gleitschutzbetrieb im herabgestuften betrieb |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007046692B4 (de) * | 2007-09-28 | 2021-04-29 | Volkswagen Ag | Antiblockiersystem für ein Kraftfahrzeug |
US8170755B2 (en) | 2008-09-16 | 2012-05-01 | Robert Bosch Gmbh | Methods and systems for improved detection of minispare tires |
US9165450B1 (en) * | 2014-06-02 | 2015-10-20 | International Truck Intellectual Property Company, Llc | Vehicle with movement sensor |
GB2624035A (en) * | 2022-11-07 | 2024-05-08 | Jaguar Land Rover Ltd | Wheel type based vehicle control |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3417019A1 (de) | 1984-05-09 | 1985-11-14 | Alfred Teves Gmbh, 6000 Frankfurt | Schaltungsanordnung fuer eine schlupfgeregelte fahrzeugbremsanlage |
EP0449845B1 (de) | 1988-12-14 | 1993-09-01 | Robert Bosch Gmbh | Antiblockierregelsystem |
EP0635135B1 (de) | 1992-04-07 | 1996-10-30 | Robert Bosch Gmbh | Verfahren zur überwachung von drehzahlfühlern |
EP0814983B1 (de) | 1995-03-27 | 1998-12-16 | Robert Bosch Gmbh | Bremssystem für ein kraftfahrzeug |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0794207B2 (ja) * | 1989-04-19 | 1995-10-11 | 日産自動車株式会社 | 四輪駆動車の駆動力配分制御装置 |
JPH0999829A (ja) * | 1995-10-04 | 1997-04-15 | Nisshinbo Ind Inc | 車輪速補正方法 |
-
2000
- 2000-12-06 DE DE10060568A patent/DE10060568A1/de not_active Withdrawn
- 2000-12-06 EP EP00993313A patent/EP1152938A1/de not_active Withdrawn
- 2000-12-06 WO PCT/DE2000/004342 patent/WO2001042070A1/de not_active Application Discontinuation
- 2000-12-06 JP JP2001543381A patent/JP2003516272A/ja not_active Withdrawn
- 2000-12-06 US US09/913,007 patent/US6554376B2/en not_active Expired - Fee Related
- 2000-12-06 KR KR1020017009980A patent/KR20010093335A/ko not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3417019A1 (de) | 1984-05-09 | 1985-11-14 | Alfred Teves Gmbh, 6000 Frankfurt | Schaltungsanordnung fuer eine schlupfgeregelte fahrzeugbremsanlage |
EP0449845B1 (de) | 1988-12-14 | 1993-09-01 | Robert Bosch Gmbh | Antiblockierregelsystem |
EP0635135B1 (de) | 1992-04-07 | 1996-10-30 | Robert Bosch Gmbh | Verfahren zur überwachung von drehzahlfühlern |
EP0814983B1 (de) | 1995-03-27 | 1998-12-16 | Robert Bosch Gmbh | Bremssystem für ein kraftfahrzeug |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008147579A1 (en) * | 2007-05-21 | 2008-12-04 | Goodrich Corporation | Fault tolerant aircraft braking control using alternate wheel speed information |
US8029074B2 (en) | 2007-05-21 | 2011-10-04 | Goodrich Corporation | Fault tolerant aircraft braking control using alternate wheel speed information |
EP3363697A1 (de) * | 2017-02-21 | 2018-08-22 | Goodrich Corporation | Gleitschutzbetrieb im herabgestuften betrieb |
US10472054B2 (en) | 2017-02-21 | 2019-11-12 | Goodrich Corporation | Antiskid operation during degraded operation |
US10759524B2 (en) | 2017-02-21 | 2020-09-01 | Goodrich Corporation | Antiskid operation during degraded operation |
Also Published As
Publication number | Publication date |
---|---|
JP2003516272A (ja) | 2003-05-13 |
EP1152938A1 (de) | 2001-11-14 |
KR20010093335A (ko) | 2001-10-27 |
US20020163246A1 (en) | 2002-11-07 |
US6554376B2 (en) | 2003-04-29 |
DE10060568A1 (de) | 2001-06-13 |
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