WO2000053472A1 - Fahrzeugstabilitätsregelsystem - Google Patents
Fahrzeugstabilitätsregelsystem Download PDFInfo
- Publication number
- WO2000053472A1 WO2000053472A1 PCT/EP2000/002148 EP0002148W WO0053472A1 WO 2000053472 A1 WO2000053472 A1 WO 2000053472A1 EP 0002148 W EP0002148 W EP 0002148W WO 0053472 A1 WO0053472 A1 WO 0053472A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- output signal
- yaw rate
- offset value
- temperature
- data memory
- 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
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/172—Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/1755—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
-
- 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
- B60T2250/00—Monitoring, detecting, estimating vehicle conditions
- B60T2250/06—Sensor zero-point adjustment; Offset compensation
- B60T2250/062—Sensor zero-point adjustment; Offset compensation loosing zero-point calibration of yaw rate sensors when travelling on banked roads or in case of temperature variations
Definitions
- the present invention relates to a vehicle stability control system for land vehicles, with a vehicle stability control system for land vehicles, with a yaw rate sensor which, during operation, delivers a first output signal representative of the yaw rate of the vehicle.
- the yaw rate is determined as a measure of the dynamic behavior of the vehicle and used to generate an intervention signal by an electronic control unit.
- EP 0 893 320 A2 proposes a vehicle control device according to which if the deviation between the yaw rate detected by means of the yaw rate sensor and a yaw rate estimated from the vehicle speed and the steering angle exceeds a threshold value, at least one wheel is braked in order to reduce a yaw moment to reduce the yaw rate deviation to generate in the vehicle body, the vehicle control device temporarily increases the threshold until the rotation rate sensor is warmed up.
- the vehicle control device known from EP 0 893 320 A2 has the disadvantage that safety-critical driving conditions cannot be completely ruled out, since an automatic brake intervention to reduce the yaw rate deviation is triggered.
- a triggering criterion for the automatic brake intervention here is an estimated yaw rate, which inevitably is not a particularly reliable one Represents size.
- a further disadvantage is that the performance of the vehicle control device is limited to a not inconsiderable extent because the threshold value is increased during the warm-up phase, as a result of which the response behavior becomes sluggish. Furthermore, temperature fluctuations occurring during operation are not taken into account in this known vehicle control device.
- DE 43 40 719 AI discloses a circuit arrangement for evaluating the signals of a yaw rate sensor, in which the temperature dependence of the signals of the yaw rate sensor is compensated for using an additional temperature sensor.
- the temperature of the yaw rate sensor is recorded with the temperature sensor and a correction factor for the signals of the yaw rate sensor is determined and stored for each temperature determined. Since on the one hand the temperature sensor can have a temperature-dependent characteristic and on the other hand the relationship between a determined temperature of the yaw rate sensor and the temperature-dependent change in a corresponding signal of the yaw rate sensor can vary, reliable compensation of temperature-dependent changes in the signals of the yaw rate sensor cannot be guaranteed. Furthermore, this circuit arrangement requires an additional sensor, namely the temperature sensor.
- the invention proposes a device according to claim 1 and a method according to claim 6.
- the invention is based on the finding that yaw rate sensors provide very strongly temperature-dependent output signals. Since the rotation rate sensors are usually housed in the passenger compartment or in the engine compartment of the vehicle, they are exposed to particularly strong temperature fluctuations. These can be of the order of 60 ° C if the rotation rate sensor assumes extremely low temperatures during vehicle downtimes in winter or extremely high in summer, which are increased or reduced to room temperature in vehicle operation by the heating or air conditioning system. In this respect, the method according to the invention is preferably to be used here.
- the manner in which the knowledge of the temperature obtained in the context of the invention can also be used for other applications in the vehicle, for example for controlling the heating or air conditioning system.
- Such applications are particularly simple if a bus system in the vehicle, e.g. CAN bus, the oscillation frequency output signal of the yaw rate sensor can be accessed.
- the yaw rate sensor supplies a (first) output signal which reflects a current yaw rate of the vehicle, falsified by the operating or ambient temperature of the yaw rate sensor.
- the problem here is that the temperature dependencies of the output signals can differ greatly from one another even for different yaw rate sensors of the same type and series (see FIG. 1), so that a fixed (programmed or hard-wired) logic for temperature compensation usually fails. In addition, age-related fluctuations cannot be compensated for in this way.
- the yaw rate sensor also delivers a (second) output signal, which is a (frequency or voltage) signal that would actually be constant, but is also (but exclusively) changed by the operating or ambient temperature according to a known law, preferably linearly (see FIG. 2).
- the invention makes use of these findings.
- the control program for the computer unit distinguishes between a learning mode and an operating mode.
- the regularity is determined according to which the zero point of the yaw rate of the vehicle detected by the yaw rate sensor shifts depending on the operating or ambient temperature.
- the instantaneous yaw rate is determined for different occurring operating or ambient temperatures of the yaw rate sensor, as can be determined from the second output signal, if the output signal of the further sensor (for example the wheel speed sensors or the steering angle sensor or the fact that the automatic Gear selector lever is on "parking") can be seen that the yaw rate of the vehicle is zero or practically zero.
- the yaw rate which deviates from zero in this way is referred to as the zero offset value in dependence on the respective operating or ambient temperature of the yaw rate sensor is entered in a table which is kept in the data memory as a so-called lookup table.
- the respective operating or ambient temperature of the yaw rate sensor serves as the addressing criterion in the lookup table.
- the yaw rate of the vehicle detected by the yaw rate sensor is then corrected with a zero point offset value which is read from the table as a function of the respective operating or ambient temperature of the yaw rate sensor (corresponding to the second output signal).
- the value corrected in this way serves as the basis for a control signal for an intervention in the driving behavior of the vehicle, for example for a selective actuation of one or more wheel brakes, limitation or reduction of the throttle valve position, unfolding of a support wheel or the like.
- the second output signal of the yaw rate sensor can also be generated by a separate temperature sensor attached to or near the yaw rate sensor if the yaw rate sensor itself should not deliver the second output signal.
- the yaw rate sensor by means of a micromechanical vibration gyrometer, and / or the further sensor arrangement by the wheel speed sensors for the ABS / ASR brake system, a steering angle sensor or the like, and / or the writable data memory by a non-volatile write / Read memory formed.
- the learning mode preferably by determining a gradient of neighboring temperature-related zero offset values and comparing a current zero offset value with that resulting from the gradient curve, The theoretical value of the current zero offset value is checked for plausibility before being written into the data memory.
- Zero point offset value for the same or almost the same temperature value and replacement of the already determined zero point offset value with a current zero point offset value in the data memory if these differ from each other due to aging-related zero point offsets.
- a first temperature-related zero offset value can be written into the data memory during final assembly with the vehicle stationary and a predetermined ambient temperature.
- the first output signal is preferably corrected with a zero offset value which is read out from the data memory as a function of the respective second output signal.
- the second output signal is preferably the oscillation frequency of the yaw rate sensor, since the oscillation frequency of the yaw rate sensor (GRS) is correlated with the operating or ambient temperature of the yaw rate sensor (GRS). This allows instantaneous and direct compensation of the zero offset.
- FIG. 3 shows a schematic block diagram of a vehicle stability control system according to the invention.
- FIG. 3 shows a vehicle stability control system for land vehicles, in particular motor vehicles.
- the vehicle stability control system has an electronic control unit ECU, which has a computer unit CPU and at least one writable data memory RAM and a control program memory ROM, which are connected to the computer unit CPU.
- a yaw rate sensor GRS in the form of a micromechanical oscillation gyrometer is connected to the electronic control unit ECU, which delivers a first output signal GR representative of the yaw rate of the vehicle during operation and a second output signal Temp representative of the operating or ambient temperature of the yaw rate sensor GRS.
- the two output signals GR and Temp are fed into the electronic control unit ECU, where they are processed by the computer unit CPU by means of a program stored in the program memory ROM. It goes without saying that the two memories RAM, ROM can also be non-volatile, battery-buffered FLASH RAMs or EEPROMs.
- an output signal 0-GR from a further sensor arrangement SENS which represent non-yawing of the vehicle at least within a predetermined tolerance band, is fed into the electronic control unit ECU.
- This sensor arrangement SENS can be the wheel speed sensors for the ABS / ASR braking system, a steering angle sensor or the like for the detection of straight-ahead travel or vehicle standstill. Possibly. it is necessary to evaluate the signals supplied by the respective sensors by means of suitable processing or linking in such a way that a definite "non-yaw" of the vehicle is reliably reproduced and recognizable.
- the electronic control unit ECU generates a control signal for an automatic brake intervention in the manner described below in order to influence the driving behavior of the vehicle.
- the control program for the computing unit CPU is divided into a learning mode and an operating mode.
- the computer unit CPU calculates a temperature-related zero offset value in from the first output signal Dependence on the second output signal Temp.
- the zero offset value determined in this way is stored with the respective temperature value as an address index in the data memory RAM. This procedure is repeated again and again when the motor vehicle is not yawing and also an operating or environmental temperatures of the yaw rate sensor for which no zero offset value has yet been determined.
- the plausibility of the current zero point offset value is also checked by determining a gradient of adjacent temperature-related zero point offset values and comparing a current zero point offset value with the theoretical value resulting from the gradient curve, before being written into the data memory .
- missing zero point offset values can be added by interpolating between zero point offset values already determined in the database.
- a first temperature-related zero point offset value is written into the data memory during final assembly with the vehicle stationary and a predetermined ambient temperature.
- the computer unit reads a temperature-related zero offset value from the data memory taking into account the second output signal and subtracts this from the current first output signal in order to generate a brake system control signal for an intervention in the driving behavior of the vehicle.
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00910813A EP1159174B1 (de) | 1999-03-11 | 2000-03-10 | Fahrzeugstabilitätsregelsystem |
DE50002175T DE50002175D1 (de) | 1999-03-11 | 2000-03-10 | Fahrzeugstabilitätsregelsystem |
AU32885/00A AU3288500A (en) | 1999-03-11 | 2000-03-10 | System for regulating the stability of a motor vehicle |
US09/951,782 US6718279B2 (en) | 1999-03-11 | 2001-09-11 | Vehicle stability regulating system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19910868.4 | 1999-03-11 | ||
DE19910868A DE19910868A1 (de) | 1999-03-11 | 1999-03-11 | Fahrzeugstabilitätsregelsystem |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/951,782 Continuation US6718279B2 (en) | 1999-03-11 | 2001-09-11 | Vehicle stability regulating system |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2000053472A1 true WO2000053472A1 (de) | 2000-09-14 |
WO2000053472A8 WO2000053472A8 (de) | 2001-04-05 |
Family
ID=7900610
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/002148 WO2000053472A1 (de) | 1999-03-11 | 2000-03-10 | Fahrzeugstabilitätsregelsystem |
Country Status (6)
Country | Link |
---|---|
US (1) | US6718279B2 (de) |
EP (1) | EP1159174B1 (de) |
AU (1) | AU3288500A (de) |
DE (2) | DE19910868A1 (de) |
ES (1) | ES2198294T3 (de) |
WO (1) | WO2000053472A1 (de) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10128056C1 (de) | 2001-06-09 | 2002-11-28 | Hella Kg Hueck & Co | Verfahren zum Abgleichen einer Anordnung zum Messen der Gierrate eines Kraftfahrzeuges sowie eine solche Anordnung |
DE10157377B4 (de) * | 2001-11-22 | 2005-10-06 | Daimlerchrysler Ag | Fahrzeugdatenbussystem mit Sensormodul |
FR2840577B1 (fr) | 2002-06-11 | 2004-12-24 | Renault Sa | Procede et dispositif de correction de trajectoire d'un vehicule automobile hybride associe a un programme electronique de stabilite |
US7085642B2 (en) * | 2002-08-05 | 2006-08-01 | Ford Global Technologies, Llc | Method and system for correcting sensor offsets |
JP4127062B2 (ja) | 2003-01-22 | 2008-07-30 | トヨタ自動車株式会社 | 横加速度センサのドリフト量推定装置、横加速度センサの出力補正装置及び路面摩擦状態推定装置 |
JP4209257B2 (ja) * | 2003-05-29 | 2009-01-14 | 三菱重工業株式会社 | 分散型コントローラとその動作方法、及び、分散型コントローラを備えるフォークリフト |
JP2004352466A (ja) * | 2003-05-30 | 2004-12-16 | Mitsubishi Heavy Ind Ltd | 自走式産業機械の機械制御装置、及び、それの機械制御方法 |
CN100354165C (zh) * | 2004-09-20 | 2007-12-12 | 丰田自动车株式会社 | 车辆的制动力控制装置 |
DE102006018974A1 (de) | 2006-04-25 | 2007-10-31 | Adc Automotive Distance Control Systems Gmbh | Verfahren zur Kalibrierung einer Gierratenmessung |
GB2447987B (en) * | 2007-03-30 | 2011-11-02 | P G Drives Technology Ltd | Method and apparatus for determining a value of a zero point offset of a yaw rate sensor |
US20090058633A1 (en) * | 2007-08-31 | 2009-03-05 | Matsushita Electric Industrial Co., Ltd. | Anc notch filter adaptation system and method for handling road noise peak shifts in a motor vehicle |
US20090127011A1 (en) * | 2007-11-21 | 2009-05-21 | Yisheng Zhang | Control method for optimizing the operation of a hybrid drive system |
DE102013213457A1 (de) * | 2013-07-09 | 2015-01-15 | Continental Automotive Gmbh | Verfahren zur Offsetkorrektur eines Sensorsignals eines Inertialsensors, insbesondere Beschleunigungs- und/oder Drehratensensors für ein Kraftfahrzeug |
DE102014210766A1 (de) | 2014-06-05 | 2015-12-17 | Continental Automotive Gmbh | Verfahren zur Offsetkorrektur eines Sensorsignals eines Inertialsensors, insbesondere Beschleunigungs- und/oder Drehratensensors für ein Kraftfahrzeug |
DE102014210767A1 (de) | 2014-06-05 | 2015-12-17 | Continental Automotive Gmbh | Verfahren zur Offsetkorrektur eines Sensorsignals eines Inertialsensors, insbesondere Beschleunigungs- und/oder Drehratensensors für ein Kraftfahrzeug |
DE102020127781A1 (de) | 2020-10-22 | 2022-04-28 | Valeo Schalter Und Sensoren Gmbh | Verfahren zum ermitteln einer fahrzeugorientierung, computerprogrammprodukt, fahrassistenzsystem und fahrzeug |
CN115214693B (zh) * | 2022-03-18 | 2024-01-09 | 广州汽车集团股份有限公司 | 横摆角速度修正方法、装置以及车辆 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5274576A (en) * | 1989-04-21 | 1993-12-28 | Group Lotus Plc | Apparatus for measuring the yaw rate of a vehicle |
DE4228893A1 (de) * | 1992-08-29 | 1994-03-03 | Bosch Gmbh Robert | System zur Beeinflussung der Fahrdynamik eines Kraftfahrzeugs |
DE4340719A1 (de) | 1993-11-30 | 1995-06-01 | Siemens Ag | Schaltungsanordnung zum Auswerten der Signale eines Giergeschwindigkeitssensors |
US5719790A (en) * | 1995-01-30 | 1998-02-17 | Siemens Aktiengesellschaft | Method and circuit configuration for compensating for signal errors of a yaw velocity sensor |
EP0893320A2 (de) | 1997-07-23 | 1999-01-27 | Toyota Jidosha Kabushiki Kaisha | Kraftfahrzeugverhalten-Steuerungsgerät mit Mitteln zur Verhinderung einer fehlerhaften Steuerung wegen einer Verschiebung des Mittelpunktes eines Gierratensensors |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5826204A (en) | 1993-11-30 | 1998-10-20 | Siemens Aktiengesellschaft | Circuit configuration for evaluation of the signals from a yaw rate sensor |
US5857160A (en) * | 1996-05-23 | 1999-01-05 | General Motors Corporation | Sensor-responsive control method and apparatus |
-
1999
- 1999-03-11 DE DE19910868A patent/DE19910868A1/de not_active Ceased
-
2000
- 2000-03-10 ES ES00910813T patent/ES2198294T3/es not_active Expired - Lifetime
- 2000-03-10 DE DE50002175T patent/DE50002175D1/de not_active Expired - Lifetime
- 2000-03-10 WO PCT/EP2000/002148 patent/WO2000053472A1/de active IP Right Grant
- 2000-03-10 EP EP00910813A patent/EP1159174B1/de not_active Expired - Lifetime
- 2000-03-10 AU AU32885/00A patent/AU3288500A/en not_active Abandoned
-
2001
- 2001-09-11 US US09/951,782 patent/US6718279B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5274576A (en) * | 1989-04-21 | 1993-12-28 | Group Lotus Plc | Apparatus for measuring the yaw rate of a vehicle |
DE4228893A1 (de) * | 1992-08-29 | 1994-03-03 | Bosch Gmbh Robert | System zur Beeinflussung der Fahrdynamik eines Kraftfahrzeugs |
DE4340719A1 (de) | 1993-11-30 | 1995-06-01 | Siemens Ag | Schaltungsanordnung zum Auswerten der Signale eines Giergeschwindigkeitssensors |
US5719790A (en) * | 1995-01-30 | 1998-02-17 | Siemens Aktiengesellschaft | Method and circuit configuration for compensating for signal errors of a yaw velocity sensor |
EP0893320A2 (de) | 1997-07-23 | 1999-01-27 | Toyota Jidosha Kabushiki Kaisha | Kraftfahrzeugverhalten-Steuerungsgerät mit Mitteln zur Verhinderung einer fehlerhaften Steuerung wegen einer Verschiebung des Mittelpunktes eines Gierratensensors |
Also Published As
Publication number | Publication date |
---|---|
WO2000053472A8 (de) | 2001-04-05 |
US20020046003A1 (en) | 2002-04-18 |
ES2198294T3 (es) | 2004-02-01 |
EP1159174B1 (de) | 2003-05-14 |
EP1159174A1 (de) | 2001-12-05 |
AU3288500A (en) | 2000-09-28 |
US6718279B2 (en) | 2004-04-06 |
DE19910868A1 (de) | 2000-09-21 |
DE50002175D1 (de) | 2003-06-18 |
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