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1. WO2001056848 - METHOD AND CIRCUIT FOR CONTROLLING AN ANTI-LOCK BRAKING SYSTEM FOR MOTOR VEHICLES HAVING ALL-WHEEL DRIVE

Publication Number WO/2001/056848
Publication Date 09.08.2001
International Application No. PCT/EP2001/001043
International Filing Date 01.02.2001
Chapter 2 Demand Filed 14.08.2001
IPC
B60T 8/172 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
TVEHICLE 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
8Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
17Using electrical or electronic regulation means to control braking
172Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
B60T 8/175 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
TVEHICLE 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
8Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
17Using electrical or electronic regulation means to control braking
175Brake regulation specially adapted to prevent excessive wheel spin during vehicle acceleration, e.g. for traction control
B60T 8/1769 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
TVEHICLE 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
8Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
17Using electrical or electronic regulation means to control braking
176Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
1769specially adapted for vehicles having more than one driven axle, e.g. four-wheel drive vehicles
CPC
B60T 2250/042
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL
2250Monitoring, detecting, estimating vehicle conditions
04Vehicle reference speed; Vehicle body speed
042Reference speed calculation in ASR or under wheel spinning condition
B60T 2270/202
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL
2270Further aspects of brake control systems not otherwise provided for
20ASR control systems
202for all-wheel drive vehicles
B60T 8/172
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL
8Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
17Using electrical or electronic regulation means to control braking
172Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
B60T 8/175
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL
8Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
17Using electrical or electronic regulation means to control braking
175Brake regulation specially adapted to prevent excessive wheel spin during vehicle acceleration, e.g. for traction control
B60T 8/1769
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL
8Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
17Using electrical or electronic regulation means to control braking
176Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
1769specially adapted for vehicles having more than one driven axle, e.g. four-wheel drive vehicles
Applicants
  • CONTINENTAL TEVES AG & CO. OHG [DE]/[DE] (AllExceptUS)
  • GRONAU, Ralph [DE]/[DE] (UsOnly)
  • BURKHARD, Dieter [DE]/[DE] (UsOnly)
Inventors
  • GRONAU, Ralph
  • BURKHARD, Dieter
Common Representative
  • CONTINENTAL TEVES AG & CO. OHG
Priority Data
100 05 071.904.02.2000DE
101 03 467.925.01.2001DE
Publication Language German (de)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN UND SCHALTUNGSANORDNUNG ZUR STEUERUNG EINER BLOCKIERGESCHÜTZTEN BREMSANLAGE FÜR KRAFTFAHRZEUGE MIT ALLRADANTRIEB
(EN) METHOD AND CIRCUIT FOR CONTROLLING AN ANTI-LOCK BRAKING SYSTEM FOR MOTOR VEHICLES HAVING ALL-WHEEL DRIVE
(FR) PROCEDE ET CIRCUIT DE COMMANDE D'UN SYSTEME DE FREINAGE A ANTIBLOCAGE DES ROUES POUR DES VEHICULES A QUATRE ROUES MOTRICES
Abstract
(DE) Bei einem Verfahren zur Steuerung einer blockiergeschützten Bremsanlage, die für Kraftfahrzeuge mit Allradantrieb vorgesehen ist, werden das Drehverhalten der Räder darstellende elektrische Signale erzeugt und logisch verknüpft. Beim Auftreten einer Blockierneigung wird der Bremsdruck geregelt, wobei als Regelkriterien der momentane Radschlupf, die Radbeschleunigung und Radverzögerung ausgewertet werden und wobei jeweils die individuelle Radgeschwindigkeit (vR) mit einer Fahrzeugreferenzgeschwindigkeit (vREF), die als Bezugsgrösse zur Regelung des Bremsdruckes dient, verglichen werden. Bei einem für ein Überdrehen typischen Raddrehverhalten, das sich durch Anstieg der Fahrzeugreferenzgeschwindigkeit (vREF) über die tatsächliche Fahrzeuggeschwindigkeit (vFZG) zeigt, wird bis zu einem bestimmten Zeitpunkt das Regelkonzept geändert, indem für diese Überdrehphase der momentane Radschlupf als Regelkriterium ausser acht bleibt und die Bremsdruckregelung lediglich von der Radbeschleunigung oder Radverzögerung abhängig wird.
(EN) The invention relates to a method for controlling an anti-lock braking system which is provided for motor vehicles having all-wheel drive. According to the inventive method, electrical signals that represent the rotational behavior of the wheels are generated and logically linked. The brake pressure is controlled when a tendency towards locking is detected, whereby the instantaneous wheel slip, the wheel acceleration and the wheel deceleration are evaluated as controlling criteria, and whereby each of the individual wheel speeds (vR) is compared to a vehicle reference speed (vREF), which serves as a reference quantity for controlling the brake pressure. The controlling concept is modified up to a certain point in time in the instance that a wheel rotational behavior which is characteristic of an excess speed is revealed to be above the actual vehicle speed (vFZG) due to an increase in the vehicle reference speed (vREF). The controlling concept is modified in that, for this excess speed phase, the instantaneous wheel slip is not taken into account as a controlling criterion, and in that the brake pressure control is based solely on the wheel acceleration or wheel deceleration.
(FR) Procédé de commande d'un système de freinage à antiblocage des roues, pour des véhicules à quatre roues motrices, selon lequel des signaux électriques représentant le comportement de rotation des roues sont produits et reliés de manière logique. En cas d'apparition d'une propension au blocage, la pression de freinage est régulée et les critères de régulation utilisés sont le patinage des roues sur le moment, l'accélération des roues et la décélération des roues. La vitesse (vR) individuelle de chaque roue est comparée à une vitesse de référence (vREF) de véhicule qui sert de grandeur de référence pour la régulation de la pression de freinage. En cas de comportement de rotation des roues typique d'une survitesse, révélée par une montée de la vitesse de référence (vREF) du véhicule au-dessus de la vitesse effective (vFZG) du véhicule, le concept de régulation est modifié jusqu'à un instant déterminé. Cette modification se traduit par le fait que pour cette phase de survitesse, le patinage des roues sur le moment n'est pas pris en compte en tant que critère de régulation et que la régulation de la pression de freinage est uniquement fonction de l'accélération ou de la décélération des roues.
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