Brake control using proportional plus integral slip regulation and proportional pressure regulation
US6161907A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1999 |
| Grant date | Dec 19, 2000 |
| Priority date | — |
| Expiry date | Aug 26, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T2220/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A brake control system determines when a wheel is unstable or stable during a braking condition. An unstable wheel is determined when the wheel speed is different from the estimated vehicle speed by greater than a fixed amount. When the wheel is determined to be unstable, an amount of brake pressure reduction is determined according to a proportional-plus-integral compensation. The proportional-plus-integral compensation is a function of the difference between the wheel speed and the estimated vehicle speed, as well as a wheel deceleration value. When the wheel is determined to be stable, brake pressure is applied according to an exponential rate. A hold mode is entered when the wheel is determined to be no longer decelerating during a dump cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.