Global Patent Index - EP 0983518 A1

EP 0983518 A1 2000-03-08 - METHOD FOR COMPENSATING VARIATIONS IN A WHEEL SPEED SENSOR

Title (en)

METHOD FOR COMPENSATING VARIATIONS IN A WHEEL SPEED SENSOR

Title (de)

VERFAHREN ZUM AUSGLEICH VON ABWEICHUNGEN EINES RADDREHZAHLSENSORS

Title (fr)

PROCEDE POUR COMPENSER LES ECARTS D'UN CAPTEUR DE VITESSE

Publication

EP 0983518 A1 (DE)

Application

EP 98922742 A

Priority

  • DE 19721488 A
  • EP 9802303 W

Abstract (en)

[origin: DE19721488A1] The invention relates to a method for compensating inaccuracies in a wheel speed sensor, wherein signal-forming elements are arranged on a sensor wheel to determine wheel speed and wherein a determined angle is allocated to a given number of signal-forming elements to determine wheel speed. The time during which the wheel rotates around said angle is evaluated. A correction factor, which is used to determine wheel speed, is stored to compensate for variations in the signal-forming elements and/or the positioning of the elements in relation to each other. During travel, the correction factors are updated by comparing the non-corrected wheel speed measured by the sensor with a wheel speed reference value determined by means of a computational model, wherein the correction factor is updated according to said comparison.

IPC 1-7 (main, further and additional classification)

G01P 21/02

IPC 8 full level (invention and additional information)

G01P 3/42 (2006.01); G01D 3/02 (2006.01); G01P 3/481 (2006.01); G01P 11/00 (2006.01); G01P 21/02 (2006.01)

CPC (invention and additional information)

G01P 3/489 (2013.01)

Citation (search report)

See references of WO 9853329A1

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

DE 19721488 A1 19981126; EP 0983518 A1 20000308; JP 2002500760 A 20020108; US 6446018 B1 20020903; WO 9853329 A1 19981126

INPADOC legal status


2004-06-09 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20031202

2003-07-02 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030519

2000-03-08 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991223

2000-03-08 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB