Device for detecting vehicle speed of four-wheeled vehicles for use in ABS
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 16, 2001
Grant Date -
N/A
app pub date -
Sep 2, 1999
filing date -
Oct 8, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In order to obtain the vehicle speed of an ordinary automobile operating with a pair of drive wheels and a pair of driven wheels, so as to provide the base of a due slipless rotation speed of the respective wheels for use in an ABS control, the rotation speed of each of the pairs of drive and driven wheels are detected. Then the data signals generated by the detection are low pass filtered and checked to determine if any of the rotation speeds detected with the driven wheels is larger than the largest of the filtered rotation speeds. Then the vehicle speed is determined from the filtered rotation speeds, excluding that or those of the driven wheel or wheels whose detected rotation speed is larger than the largest of the filtered rotation speeds.
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