EP1077849A1 - Procede pour la regulation de la stabilite de conduite d'un vehicule en fonction de la valeur demandee de patinage du pneu, ainsi que circuit approprie pour la mise en oeuvre du procede - Google Patents
Procede pour la regulation de la stabilite de conduite d'un vehicule en fonction de la valeur demandee de patinage du pneu, ainsi que circuit approprie pour la mise en oeuvre du procedeInfo
- Publication number
- EP1077849A1 EP1077849A1 EP99924935A EP99924935A EP1077849A1 EP 1077849 A1 EP1077849 A1 EP 1077849A1 EP 99924935 A EP99924935 A EP 99924935A EP 99924935 A EP99924935 A EP 99924935A EP 1077849 A1 EP1077849 A1 EP 1077849A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control
- vehicle
- value
- yaw angle
- determined
- 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- Withdrawn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
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
- B60T8/1755—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
Definitions
- the invention relates to a method for regulating the driving stability of a vehicle, in which the input variables essentially determined by the desired driving curve are converted into the target value of a yaw angle variable on the basis of a vehicle model defined by computing variables, and this is compared in a comparator with an actual value determined by means of a sensor the yaw rate is compared, the determined difference value being fed to a control system by calculating a torque amount which is used to determine pressure sizes which generate an additional yaw moment via the wheel brakes of the vehicle, which leads the measured yaw rate to the calculated yaw rate.
- the method serves to create an additional torque through targeted interventions on individual brakes of the vehicle, which leads an actually measured yaw rate of the vehicle to a yaw rate given by a driver.
- the control method intervenes in particular in a steering behavior of the vehicle if, due to external conditions, such as a slippery road surface, the occurrence of cross winds or changes in load changes, a path actually traveled by the vehicle cannot be brought into line with a path desired by the driver without additional torque can.
- the invention further relates to a circuit suitable for carrying out the method.
- the invention has for its object to carry out a generic control method depending on the rigidity of at least one tire of the vehicle.
- this object is achieved in that the control method for controlling the driving stability of a vehicle, in which the input variables (g v ) essentially determined by the desired driving curve
- the method according to the invention is preferably carried out by a system for driving stability control.
- driving stability control ESP
- various control principles are used to influence driving behavior - 3 -
- ABS anti-lock braking system
- ASR traction control
- EBV electronic braking force distribution
- GR yaw moment control
- the yaw moment control shown can be combined in an overall system with one or more of the control and influencing principles mentioned.
- the yaw moment control according to the invention can, however, also be combined with other suitable control strategies and, if appropriate, even implemented without these control strategies.
- An integration of the yaw moment control into a control system which is capable of executing as many of the control strategies mentioned as possible, is particularly advantageous in a vehicle that is to meet high safety requirements.
- German Offenlegungsschrift DE 195 15 050 AI Full reference is made to the examples and implementations carried out there.
- the additional yaw moment is only generated when an entry threshold of a yaw rate controller is reached or exceeded.
- the entry threshold of the yaw rate regulator depends on the rigidity of the tire.
- Fig. 3 shows a maximum value limit kß of k.
- the entry threshold of the yaw rate control is corrected by an additive correction value k if the following conditions are met:
- the time derivative of the control difference is greater than 30 degrees / s and b) the sign of the control difference and its time derivative are the same
- the threshold correction k is calculated in the following context:
- kl - correction value dependent on lateral acceleration is k2 - a correction factor depending on the
- Tire rigidity denotes and where k3 - a maximum value limitation of k (as a function of
- the faulty adjustments are measured in particular in the central transverse acceleration range, so that the correction is only carried out in this range.
- the dependence of the value kl on the lateral acceleration is assumed, as shown in FIG. 1.
- the K value is influenced by its formation, both by the tire rigidity and by the current coefficient of friction. This is another important reason for hiding the correction in the lower lateral acceleration range.
- a maximum value limit kß of k is shown.
- a speed-dependent control of k makes sense.
- Elements of this variant of the invention are the use of the K value of the ASR, the conditions for the threshold correction and the lateral acceleration dependency of the threshold correction. - 7th
- K value tire slip requirement value
- the current ⁇ is used to determine the K value. It is limited to a maximum of 1.5.
- the K-value is learned when driving straight ahead.
- the individual values are added up over a period of between 0.5 and 3 s and the K value averaged over this period is set as the new valid K value.
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
L'invention concerne un procédé de régulation permettant de réguler la stabilité de conduite d'un véhicule, dans lequel les grandeurs d'entrée (υ,ξref) déterminées sensiblement par la courbe de roulement souhaitée sont converties, sur la base d'un modèle de véhicule déterminé par des grandeurs de calcul, en une valeur théorique (gS) d'une grandeur d'angle d'embardée, et cette valeur théorique (gS) est comparée dans un comparateur avec la valeur réelle (gI) de la grandeur d'angle d'embardée, déterminée au moyen d'un capteur. La valeur différentielle (gD) déterminée est acheminée à un système de régulation, une grandeur de couple (M) étant calculée, laquelle sert à déterminer des grandeurs de pression (Δp,p) produisant sur les freins de roues du véhicule un couple d'embardée supplémentaire qui ajoute la grandeur d'angle d'embardée mesurée à la grandeur d'angle d'embardée calculée. Ce procédé de régulation s'effectue en fonction d'une valeur K d'au moins un pneu du véhicule.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19821181 | 1998-05-12 | ||
DE19821181 | 1998-05-12 | ||
PCT/EP1999/003223 WO1999058381A1 (fr) | 1998-05-12 | 1999-05-11 | Procede pour la regulation de la stabilite de conduite d'un vehicule en fonction de la valeur demandee de patinage du pneu, ainsi que circuit approprie pour la mise en oeuvre du procede |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1077849A1 true EP1077849A1 (fr) | 2001-02-28 |
Family
ID=7867488
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99924935A Withdrawn EP1077849A1 (fr) | 1998-05-12 | 1999-05-11 | Procede pour la regulation de la stabilite de conduite d'un vehicule en fonction de la valeur demandee de patinage du pneu, ainsi que circuit approprie pour la mise en oeuvre du procede |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1077849A1 (fr) |
JP (1) | JP2002514547A (fr) |
WO (1) | WO1999058381A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19919837A1 (de) * | 1999-04-30 | 2000-11-09 | Daimler Chrysler Ag | Verfahren zum Eingriff in ein System zur Steuerung bzw. Regelung der Fahrdynamik eines Kraftfahrzeugs |
DE10160049B4 (de) * | 2000-12-30 | 2006-04-27 | Robert Bosch Gmbh | System und Vefahren zur Überwachung des Fahrverhaltens eines Kraftfahrzeugs |
DE102006016769B3 (de) | 2006-04-10 | 2007-10-31 | Ford Global Technologies, LLC, Dearborn | Verfahren zum Optimieren eines Einspurmodells |
DE102007029605A1 (de) * | 2007-06-27 | 2009-01-02 | Daimler Ag | Verfahren und Vorrichtung zum Beeinflussen der Querdynamik eines Fahrzeugs |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19515050A1 (de) | 1994-11-25 | 1996-05-30 | Teves Gmbh Alfred | Verfahren zur Fahrstabilitätsregelschaltung mit Steuerung über Druckgradienten |
DE19651968B4 (de) * | 1996-12-13 | 2004-04-22 | Continental Teves Ag & Co. Ohg | Regelsystem für ein Fahrzeug mit gummibereiften Rädern |
-
1999
- 1999-05-11 JP JP2000548202A patent/JP2002514547A/ja not_active Withdrawn
- 1999-05-11 EP EP99924935A patent/EP1077849A1/fr not_active Withdrawn
- 1999-05-11 WO PCT/EP1999/003223 patent/WO1999058381A1/fr not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9958381A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2002514547A (ja) | 2002-05-21 |
WO1999058381A1 (fr) | 1999-11-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20001212 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES FR GB IT |
|
17Q | First examination report despatched |
Effective date: 20010606 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: DAIMLERCHRYSLER AG Owner name: CONTINENTAL TEVES AG & CO. OHG |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20011218 |