Model based brake pressure estimation
US6508522B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2002 |
| Grant date | Jan 21, 2003 |
| Priority date | — |
| Expiry date | Mar 5, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T8/48
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method and apparatus are provided for estimating brake pressure in a disk brake caliper, on the basis of a simplified mathematical model. The simplified model is limited to operating conditions in which the caliper piston is holding the brake pads in contact with the rotor, wherein higher order terms and certain fluid dependent terms of the model can be eliminated, thereby simplifying the model to the point that it can be readily used in an effective and efficient manner for estimating fluid pressure in the cylinder of the caliper. The displacement of the piston is estimated while the piston is holding the brake pad in contact with the rotor, as a function of an exchange of fluid between the pressure source and the cylinder. The brake pressure in the cylinder is determined as a function of the displacement of the piston while the piston is holding the brake pad in contact with the rotor. The exchange of fluid between the cylinder and pressure source is estimated as a function of a difference in pressure between the cylinder and the source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.