Antilock brake system with closed loop apply bump
US5308153A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Aug 19, 1992 |
| Grant date | May 3, 1994 |
| Priority date | — |
| Expiry date | Aug 19, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T8/17636
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle antilock brake system provides an adaptive apply bump period at the beginning of the apply phase of a antilock brake pressure cycle that provides rapid recovery of the correct amount of pressure for all braking conditions. The apply bump period is established based upon the wheel acceleration and the peak acceleration attained by the wheel during recovery from an incipient wheel lock condition. In particular, the apply bump is initiated when recovery from an incipient wheel lock condition is first sensed and thereafter terminated when the wheel acceleration decreases to below a threshold value that is a predetermined function of the peak acceleration of the wheel during recovery from an incipient wheel lock condition in the ABS pressure cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.