EP 0869890 A1 19981014 - METHOD OF IMPROVING THE CONTROL BEHAVIOUR OF AN ANTILOCKING SYSTEM
Title (en)
METHOD OF IMPROVING THE CONTROL BEHAVIOUR OF AN ANTILOCKING SYSTEM
Title (de)
VERFAHREN ZUR VERBESSERUNG DES REGELVERHALTENS EINES ABS
Title (fr)
PROCEDE POUR AMELIORER LE COMPORTEMENT DE REGULATION D'UN SYSTEME ABS
Publication
Application
Priority
- DE 19545012 A 19951202
- EP 9604530 W 19961018
Abstract (en)
[origin: DE19545012A1] In order to improve the control behaviour of an antilocking system, a rapid reliable detection of a reduced friction travelling situation is carried out. For that purpose, the re-acceleration of the non-driven wheels following brake pressure reduction during an adjustment is analysed and the presence of a low friction value coefficient detected if in the re-acceleration phase the maximum re-acceleration (amax) of both non-driven wheels remains below a predetermined threshold (aG) while simultaneously the maximum filtered acceleration (aFmax) remains below a defined threshold (aFG) and if the duration (T) of the positive changes in the filtered acceleration (aF) in this phase exceeds a predetermined time threshold (TG). If these conditions are met, the brake pressure reduction in the subsequent instability phase of these wheels is increased, e.g. by permanent actuation of the pressure reduction valves.
IPC 1-7
IPC 8 full level
B60T 8/172 (2006.01); B60T 8/1763 (2006.01); B60T 8/70 (2006.01); G01P 15/00 (2006.01)
CPC (source: EP US)
B60T 8/172 (2013.01 - EP US); B60T 8/17636 (2013.01 - EP US); G01P 15/00 (2013.01 - EP US); B60T 2210/12 (2013.01 - EP US); B60T 2210/124 (2013.01 - EP US)
Citation (search report)
See references of WO 9720718A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DE 19545012 A1 19970605; DE 19545012 B4 20050901; EP 0869890 A1 19981014; JP 2000501353 A 20000208; US 6205393 B1 20010320; WO 9720718 A1 19970612
DOCDB simple family (application)
DE 19545012 A 19951202; EP 9604530 W 19961018; EP 96934741 A 19961018; JP 52089597 A 19961018; US 7765198 A 19980908