Anti-lock brake control method having adaptive entry criteria
US6895322B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2001 |
| Grant date | May 17, 2005 |
| Priority date | — |
| Expiry date | May 17, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T7/042
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An improved ABS control method incorporates entry criteria for initiating ABS control based on brake pedal position and rate of depression, adaptively adjusted by a reference pedal position corresponding to a predefined vehicle deceleration. A periodically-updated characterization of the relationship between brake pedal position and vehicle deceleration is used to establish the reference brake pedal position, and when insipient wheel lock is detected, the initiation of ABS control is delayed by an entry delay period that decreases with increasing rate of pedal depression and with the degree to which the pedal position exceeds the reference pedal position. In this way, the entry conditions are predicated primarily on the manner of brake pedal depression, with adaptive adjustment for variations in braking effectiveness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.