Vehicle anti-lock control apparatus and method
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United States of America Patent
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-
Feb 9, 1993
Issued Date -
N/A
app pub date -
Jan 21, 1992
filing date -
Sep 8, 1989
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An anti-lock control apparatus and method in which the brake hydraulic pressure is controlled by regarding an estimated vehicle speed as an actual vehicle speed, is characterized in that the estimated vehicle speed is corrected when the estimated vehicle speed is extremely reduced relative to the actual vehicle speed when the four wheel speeds are reduced at the same time, or the like, thereby preventing the estimated vehicle speed from being away from the actual speed. It can be applied as the correction of the estimated vehicle speed that the estimated vehicle speed may be maintained at a constant value, and the deceleration and acceleration of the estimated vehicle speed may be varied in accordance with a friction coefficient of the road surface.
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