Vehicle wheel speed calculation device and anti-skid braking...

Details Vehicle wheel speed calculation device and anti-skid braking... Vehicle wheel speed calculation device and anti-skid braking...

2006-04-18

2006-04-18

Barlow, John (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system

Speed

Reexamination Certificate

active

07031874

ABSTRACT:
Numbers of teeth of respective rotors are obtained once and stored in an EEPROM. Then, when an ignition switch is initially turned on, vehicle wheel speeds for the respective vehicle wheels are derived based on the information about the numbers of teeth stored in the EEPROM. Accordingly, it is possible to obtain the vehicle wheel speeds even during a calculation period while the number of teeth of each rotor is being calculated each time the ignition switch is turned on. Further, it also becomes possible to perform ABS control prior to when the vehicle wheel speed calculation is completed.

REFERENCES:
patent: 5541859 (1996-07-01), Inoue et al.
patent: 6204658 (2001-03-01), Stanusch et al.
patent: 6445176 (2002-09-01), Wallrafen
patent: 2002/0030481 (2002-03-01), Inoue et al.
patent: 2004/0246117 (2004-12-01), Ogawa et al.
patent: A-10-73613 (1998-03-01), None
German Office Action dated Sep. 13, 2005 with two sets of its English translation.

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