Anti-skid brake control system for automotive vehicle with feature of variable timing of derivation of wheel acceleration data
US5058020A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 28, 1989 |
| Grant date | Oct 15, 1991 |
| Priority date | — |
| Expiry date | Mar 28, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S303/05
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An anti-skid brake control system is provided with two wheel acceleration deriving circuits. A first wheel acceleration deriving circuit provides a timing for deriving wheel acceleration data with a relatively longer interval, which longer interval is long enough to obtain a good number of wheel speed data for deriving first wheel acceleration with satisfactorily high precision level. On the other hand, a second wheel acceleration deriving circuit provides a timing for deriving wheel acceleration data with a relatively shorter interval, which shorter interval is short enough for deriving wheel acceleration data with satisfactorily high response characteristics. The wheel acceleration data derived by the first wheel acceleration data is utilized in deteceting timing for switching operational mode of the anti-skid brake control system from an APPLICATION mode or RELEASE mode in which braking pressure is decreased to a HOLD mode in which braking pressure is maintained at constant value. On the other hand, the wheel acceleration data derived by the second wheel acceleration deriving circuit is utilized for detecting a peak value of the wheel acceleration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.