Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1991-08-27
1993-07-20
Oberleitner, Robert J.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
3031135, 36442602, B60T 858
Patent
active
052287580
ABSTRACT:
An antilock brake control system with a learning and correction function includes a slippage detector for detecting a slip value representing the slipping of a tire to a road surface. The slip value is compared with a slip threshold, and a locking symptom signal is produced when the slip value exceeds the slip threshold. A brake pressure suppression starts when the locking symptom signal is produced. A slippage learning arrangement is provided for learning, during a learning period from the start of brake pressure suppression until the tire stabilizes, whether a maximum of the slip value during the learning period is within a predetermined range, is greater than the predetermined range, or is less than the predetermined range. The slip threshold is corrected such that when the maximum slip value is greater than the predetermined range, the slip threshold is decreased, and when the maximum slip value is less than the predetermined range, the slip threshold is increased.
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Fujioka Hideaki
Nakaura Toru
Muratori Alfred
Oberleitner Robert J.
Sumitomo Electric Industries Ltd.
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