WO1995026285A1 - Schaltungsanordnung zum auswerten der signale eines giergeschwindigkeitssensors - Google Patents
Schaltungsanordnung zum auswerten der signale eines giergeschwindigkeitssensors Download PDFInfo
- Publication number
- WO1995026285A1 WO1995026285A1 PCT/EP1995/000852 EP9500852W WO9526285A1 WO 1995026285 A1 WO1995026285 A1 WO 1995026285A1 EP 9500852 W EP9500852 W EP 9500852W WO 9526285 A1 WO9526285 A1 WO 9526285A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- yaw rate
- wheel
- wheel speed
- signals
- sensor
- 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
-
- 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
- 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
-
- 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
- Circuit arrangement for evaluating the signals of a yaw rate sensor
- the invention relates to a circuit arrangement according to the preamble of claim 1.
- Such an arrangement can e.g. be used in a yaw control with which the driving stability of a motor vehicle is increased, e.g. in the event of incorrect driving maneuvers by the driver or to compensate for a cross wind.
- Yaw movements are rotations of the motor vehicle about its vertical axis, i.e. around an axis running perpendicular to the road surface through its center of gravity.
- Vehicle manipulated variables for yaw control can either be an asymmetrical braking of the vehicle by an exclusive or different actuation of the brakes on one side of the motor vehicle or an adjustment of the rear axle steering angle in a motor vehicle with rear wheel steering.
- the influence of destabilizing forces on the vehicle is determined by measuring a current "yaw rate", a desired yaw rate is determined and compared with the current yaw rate, and the brakes are actuated in accordance with the comparison result, to keep the vehicle stable (DE 39 19 347 AI).
- the yaw rate (also called yaw rate) is measured with a yaw or rotational speed sensor (also yaw rate sensor) and converted into an electrical signal.
- the quality of the sensor used largely determines the accuracy of the driving stability control.
- the number of sensors currently available on the market for automotive use is limited to a few.
- the technology is still in its infancy.
- the base materials are made to vibrate by means of glued-on piezoceramics or, in the case of the metal ring, by magnetic excitation.
- the signal is also decoupled via glued-on piezoceramics or inductively with the metal rings.
- the currently available standing sensors are micromachined, but there are still no micromachine sensors made of silicon, such as are found in acceleration sensors.
- the invention is based on the object of reducing the circuit complexity for monitoring the sensors by carrying out the monitoring under program control by a computer which is present in any case in the control unit which evaluates the sensor signals.
- this object is achieved by the circuit arrangement according to claim 1.
- the signals of at least one sensor - in most cases several sensors - are fed to this control unit, which are variables that are dependent on the driving state, such as e.g. record the steering wheel angle, the wheel speeds, the lateral and longitudinal acceleration, etc.
- a reference yaw rate is calculated by the control device from these signals and compared with the yaw rate measured by the sensor.
- a plausibility check is carried out with respect to the yaw rate sensor signal. Given the plausibility, the
- the senor If the difference between the two yaw velocities is above a predetermined value, the sensor is considered to be faulty and a corresponding diagnostic bit is set.
- the advantage is that, depending on the driving situation, different algorithms can be used to calculate the yaw rate from different driving-specific state variables. Switching between the algorithms is advantageously carried out with the aid of a fuzzy logic circuit.
- State variables can be measured with sensors as well as derived from a mathematical vehicle model stored in the control unit.
- FIG. 1 shows a motor vehicle with an arrangement according to the invention with a control unit, in a schematic representation;
- FIG. 2 shows a fuzzy logic circuit as part of the control unit from FIGS. 1 and
- FIG. 3 shows a flowchart of the program with which the control device monitors the yaw rate sensor.
- a motor vehicle 1 contains a circuit arrangement for evaluating the signals of a yaw rate sensor, which is part of a yaw rate control loop.
- This control circuit includes an electronic control unit 2, an actuator or actuator 3 and several sensors: four wheel speed sensors 4 to 7, which measure the wheel speeds of the front left wheel vl, the front right wheel vr, the rear left wheel hl or of the rear right wheel measure hr.
- a steering wheel angle sensor 10 a yaw rate sensor 11, a longitudinal acceleration sensor 12 and a lateral acceleration sensor 13.
- the circuit arrangement can also include further sensors, not shown here.
- the actuator 3 receives control signals of the electronic control unit 2 via a signal line or a signal bus 14 and then generates yaw moments, ie torques about the vertical axis of the motor vehicle 1 braking to different degrees is carried out on the left and on the right side of the vehicle or by steering the rear axle of the motor vehicle.
- the actuator 3 and the sensors 4 to 13 are known as such, and are therefore not described in detail here.
- Control unit 1 receives the following sensor values or signals from them:
- the yaw rate of the motor vehicle can be calculated in various ways from the sensor signals listed above, specifically under predetermined conditions.
- Formulas AI to A12 are shown below (more general to An formulas). Each of them corresponds to an algorithm that is valid for a fixedly defined value range of the sensor signals.
- a number of mathematical vehicle models can be stored in a memory of the control unit, not shown in the drawing. Based on input variables, these models deliver status signals which replace the sensor signals in the above equations. The validity ranges of the sensor signals are listed below.
- the range of validity is determined by the requirement for a low wheel slip and according to predetermined wheel slip angles fixed.
- the validity range is determined by the following conditions:
- the validity range is determined by the following conditions:
- the scope is determined by the following conditions:
- Fuzzy logic circuits are known per se.
- the logic circuit 18 is only explained to the extent necessary for the function of the monitoring circuit according to the invention. It has a process part 20, a fuzzification 21 and a defuzzification 22.
- Input variables of the fuzzy logic circuit 18 are the driving state variables that characterize the driving process: steering wheel angle, wheel speeds, lateral acceleration, longitudinal acceleration, etc. As mentioned, they can originate from sensor signals or from a stored vehicle model.
- the fuzzification ie the conversion into fuzzy logic variables, and the evaluation takes place with the help of expert knowledge stored there.
- the output signals of the fuzzy control base 17 are defuzzified and output by the logic circuit 18 as the following output variables: Kl, K2, K3, K4, Kn. These output variables are amplification factors; with which the individual addition members that represent the result of equations AI to An are weighted.
- the yaw rate is evaluated within a cycle of the yaw rate determination, in that the algorithms of the equations AI to AI3 and Gl_13 are processed as can be seen from the flowchart in FIG. 3.
- the signal voltages of the sensors 10 to 13 used are read in and filtered in a step SO in order to eliminate random signal voltage fluctuations.
- a plausibility condition is as follows:
- step S2 If a plausibility check can be carried out, it is carried out in step S2.
- the change in the steering wheel angle in a predetermined tolerance band is equal to the change in the measured yaw rate in a predetermined tolerance band, namely at a constant vehicle speed other than zero.
- the change in the lateral acceleration in a predetermined tolerance band is equal to the change in the measured yaw rate in a predetermined tolerance band, namely at a constant vehicle speed.
- step S3 If this plausibility check is positive, the process branches to a step S3, otherwise it branches to a step S8.
- step S3 the amplification factors associated with the respective addition terms (Kl, ..., Kn) are determined by the evaluation in the fuzzy rule base.
- step S5 tests whether the respective gain factor (Kl, ..., Kn) is zero. If the gain factor is not equal to zero, the yaw rate assigned to the respective gain factor is calculated in a next step S6.
- a step S7 the individual components of the multiplication of the respective yaw rate with the respective gain factor are added to the reference yaw rate ⁇ ref .
- a yaw rate sensor diagnostic bit is set between the determined yaw rate and the measured yaw rate and, depending on the result of the plausibility check, which indicates whether the sensor is classified as faultless or faulty.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59502346T DE59502346D1 (de) | 1994-03-25 | 1995-03-08 | Schaltungsanordnung zum auswerten der signale eines giergeschwindigkeitssensors |
EP95912223A EP0751888B1 (de) | 1994-03-25 | 1995-03-08 | Schaltungsanordnung zum auswerten der signale eines giergeschwindigkeitssensors |
JP7524924A JPH09510785A (ja) | 1994-03-25 | 1995-03-08 | ヨーイング速度センサの信号を評価する回路装置 |
KR1019960705367A KR970702181A (ko) | 1994-03-25 | 1995-03-08 | 편요비 센서로부터 신호를 평가하는 회로 장치(circuit for processing signals from a yaw-rate sensor) |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94104856.3 | 1994-03-25 | ||
EP94104856 | 1994-03-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995026285A1 true WO1995026285A1 (de) | 1995-10-05 |
Family
ID=8215817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1995/000852 WO1995026285A1 (de) | 1994-03-25 | 1995-03-08 | Schaltungsanordnung zum auswerten der signale eines giergeschwindigkeitssensors |
Country Status (7)
Country | Link |
---|---|
US (1) | US5842143A (de) |
EP (1) | EP0751888B1 (de) |
JP (1) | JPH09510785A (de) |
KR (1) | KR970702181A (de) |
CZ (1) | CZ267596A3 (de) |
DE (1) | DE59502346D1 (de) |
WO (1) | WO1995026285A1 (de) |
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US6122568A (en) * | 1998-12-22 | 2000-09-19 | Ford Global Technologies, Inc. | Method and apparatus for determining the dynamic stability of an automotive vehicle |
EP1118519A2 (de) * | 2000-01-22 | 2001-07-25 | WABCO GmbH & CO. OHG | Verfahren zur Erkennung des fehlerhaften Einbaus von Sensiermitteln in einem Fahrzeug |
EP0859960B1 (de) * | 1996-09-07 | 2003-04-23 | Robert Bosch Gmbh | Vorrichtung und verfahren zur überwachung von sensoren in einem fahrzeug |
DE19838158B4 (de) * | 1997-08-22 | 2005-12-15 | Toyota Jidosha K.K., Toyota | Vorrichtung zur Erfassung einer Anomalie eines Gierratensensors und damit ausgerüstetes Fahrzeug |
EP2287057A1 (de) * | 2009-08-18 | 2011-02-23 | Tofas Turk Otomobil Fabrikasi Anonim Sirketi | Gierwinkelgeschwindigkeitsmesssystem |
DE19960101B4 (de) * | 1999-12-14 | 2016-03-10 | Continental Automotive Gmbh | Verfahren zur vorausschauenden Bestimmung eines Fahrkorridors eines Kraftfahrzeuges für ein automatisches Abstandsregel- und/oder kontrollsystem |
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WO1999001718A1 (de) | 1997-07-02 | 1999-01-14 | Robert Bosch Gmbh | Verfahren und vorrichtung zur überwachung von sensoren in einem fahrzeug |
DE19749058A1 (de) | 1997-07-02 | 1999-01-07 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Regelung einer die Fahrzeugbewegung repräsentierenden Bewegungsgröße |
DE19748126A1 (de) | 1997-07-02 | 1999-01-07 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Überwachung von Sensoren in einem Fahrzeug |
JP3198993B2 (ja) * | 1997-07-23 | 2001-08-13 | トヨタ自動車株式会社 | 車輌の挙動制御装置 |
DE19844913C2 (de) | 1998-09-30 | 2003-02-13 | Bosch Gmbh Robert | Vorrichtung und Verfahren zur Überwachung eines in einem Fahrzeug angeordneten Querbeschleunigungssensor |
JP3649007B2 (ja) * | 1998-11-27 | 2005-05-18 | トヨタ自動車株式会社 | 車両の後退判定方法及び車両制御装置 |
US6202009B1 (en) * | 1998-12-22 | 2001-03-13 | Ford Global Technologies, Inc. | Method for detecting fault of vehicle motion sensors |
CZ300170B6 (cs) * | 2000-09-27 | 2009-03-04 | Ceské Vysoké Ucení Technické V Praze Centrum Biomedicínského Inženýrství | Zpusob detekce a signalizace únavy ridice behem rízení vozidla a zarízení k provádení tohoto zpusobu |
US20040073351A1 (en) | 2001-01-26 | 2004-04-15 | Markus Haberhauer | Method for regulating directional stability |
SE0101247L (sv) * | 2001-04-09 | 2002-10-10 | Scania Cv Ab | Förfarande och anordning för alstring av en halkvarningssignal |
US6941205B2 (en) | 2002-08-01 | 2005-09-06 | Ford Global Technologies, Llc. | System and method for deteching roll rate sensor fault |
GB2404100A (en) * | 2003-07-17 | 2005-01-19 | Bombardier Transp | Model-based monitoring an operation of a converter |
JP4529444B2 (ja) * | 2004-01-13 | 2010-08-25 | パナソニック株式会社 | 角速度センサ |
US7668645B2 (en) | 2004-10-15 | 2010-02-23 | Ford Global Technologies | System and method for dynamically determining vehicle loading and vertical loading distance for use in a vehicle dynamic control system |
US7715965B2 (en) | 2004-10-15 | 2010-05-11 | Ford Global Technologies | System and method for qualitatively determining vehicle loading conditions |
US7660654B2 (en) | 2004-12-13 | 2010-02-09 | Ford Global Technologies, Llc | System for dynamically determining vehicle rear/trunk loading for use in a vehicle control system |
US7590481B2 (en) | 2005-09-19 | 2009-09-15 | Ford Global Technologies, Llc | Integrated vehicle control system using dynamically determined vehicle conditions |
US8121758B2 (en) | 2005-11-09 | 2012-02-21 | Ford Global Technologies | System for determining torque and tire forces using integrated sensing system |
US7600826B2 (en) | 2005-11-09 | 2009-10-13 | Ford Global Technologies, Llc | System for dynamically determining axle loadings of a moving vehicle using integrated sensing system and its application in vehicle dynamics controls |
FR2900893B1 (fr) * | 2006-05-10 | 2008-06-20 | Bosch Gmbh Robert | Procede de reglage d'un systeme de controle dynamique de trajectoire pour vehicule automobile. |
DE102007034142B4 (de) * | 2007-07-21 | 2016-03-10 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur Plausibilisierung einer die Gierrate oder die Querbeschleunigung oder den Lenkwinkel eines Fahrzeugs repräsentierenden Zustandsgröße |
US8195357B2 (en) * | 2008-04-16 | 2012-06-05 | GM Global Technology Operations LLC | In-vehicle sensor-based calibration algorithm for yaw rate sensor calibration |
DE102009013895B4 (de) * | 2009-03-19 | 2011-06-30 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH, 80809 | Fahrzeug mit einer Einrichtung zur Regelung der Fahrdynamik mit in einer gemeinsamen Baueinheit integriertem Lenkwinkelsensor, Gierratensensor und Beschleunigungssensor |
DE102009048091B4 (de) * | 2009-10-02 | 2015-04-09 | Bayerische Motoren Werke Aktiengesellschaft | Regelverfahren für elektrische Servolenkungen |
DE102009053817C5 (de) † | 2009-11-18 | 2016-07-07 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Fahrzeug mit einer Bremsmoment von Hinterrädern auf die Vorderräder übertragenden Bremseinrichtung mit Bremsschlupfregelung |
KR102055020B1 (ko) * | 2011-03-02 | 2020-01-22 | 콘티넨탈 테베스 아게 운트 코. 오하게 | 지능형 차량 센서 디바이스 |
DE102011108284A1 (de) * | 2011-07-21 | 2013-01-24 | Liebherr-Werk Ehingen Gmbh | Kransteuerung und Kran |
KR101927111B1 (ko) * | 2012-06-04 | 2019-03-12 | 현대모비스 주식회사 | 요레이트 산출 방법 및 장치와 이를 이용한 차선유지보조시스템 제어 방법 |
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DE3731756A1 (de) * | 1987-09-22 | 1989-03-30 | Bosch Gmbh Robert | Verfahren zur regelung der fahrstabilitaet eines fahrzeugs |
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- 1995-03-08 WO PCT/EP1995/000852 patent/WO1995026285A1/de not_active Application Discontinuation
- 1995-03-08 DE DE59502346T patent/DE59502346D1/de not_active Expired - Lifetime
- 1995-03-08 KR KR1019960705367A patent/KR970702181A/ko not_active Application Discontinuation
- 1995-03-08 EP EP95912223A patent/EP0751888B1/de not_active Expired - Lifetime
- 1995-03-08 CZ CZ962675A patent/CZ267596A3/cs unknown
- 1995-03-08 JP JP7524924A patent/JPH09510785A/ja active Pending
-
1996
- 1996-09-25 US US08/710,986 patent/US5842143A/en not_active Expired - Lifetime
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DE3731756A1 (de) * | 1987-09-22 | 1989-03-30 | Bosch Gmbh Robert | Verfahren zur regelung der fahrstabilitaet eines fahrzeugs |
EP0391047A1 (de) * | 1989-04-05 | 1990-10-10 | Inventio Ag | Verfahren für die Bremsenprüfung und -überwachung bei Schienenfahrzeugen und Vorrichtung für die Ausübung des Verfahrens |
EP0392165A1 (de) * | 1989-04-12 | 1990-10-17 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur Regelung einer querdynamischen Zustandsgrösse eines Kraftfahrzeuges |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0859960B1 (de) * | 1996-09-07 | 2003-04-23 | Robert Bosch Gmbh | Vorrichtung und verfahren zur überwachung von sensoren in einem fahrzeug |
DE19838158B4 (de) * | 1997-08-22 | 2005-12-15 | Toyota Jidosha K.K., Toyota | Vorrichtung zur Erfassung einer Anomalie eines Gierratensensors und damit ausgerüstetes Fahrzeug |
US6122568A (en) * | 1998-12-22 | 2000-09-19 | Ford Global Technologies, Inc. | Method and apparatus for determining the dynamic stability of an automotive vehicle |
DE19960101B4 (de) * | 1999-12-14 | 2016-03-10 | Continental Automotive Gmbh | Verfahren zur vorausschauenden Bestimmung eines Fahrkorridors eines Kraftfahrzeuges für ein automatisches Abstandsregel- und/oder kontrollsystem |
EP1118519A2 (de) * | 2000-01-22 | 2001-07-25 | WABCO GmbH & CO. OHG | Verfahren zur Erkennung des fehlerhaften Einbaus von Sensiermitteln in einem Fahrzeug |
DE10002685A1 (de) * | 2000-01-22 | 2001-07-26 | Wabco Gmbh & Co Ohg | Verfahren zur Erkennung des fehlerhaften Einbaus von Sensiermiteln in einem Fahrzeug |
EP1118519A3 (de) * | 2000-01-22 | 2002-06-12 | WABCO GmbH & CO. OHG | Verfahren zur Erkennung des fehlerhaften Einbaus von Sensiermitteln in einem Fahrzeug |
EP2287057A1 (de) * | 2009-08-18 | 2011-02-23 | Tofas Turk Otomobil Fabrikasi Anonim Sirketi | Gierwinkelgeschwindigkeitsmesssystem |
Also Published As
Publication number | Publication date |
---|---|
EP0751888B1 (de) | 1998-05-27 |
KR970702181A (ko) | 1997-05-13 |
CZ267596A3 (en) | 1997-02-12 |
US5842143A (en) | 1998-11-24 |
DE59502346D1 (de) | 1998-07-02 |
JPH09510785A (ja) | 1997-10-28 |
EP0751888A1 (de) | 1997-01-08 |
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