Vehicle lateral velocity and surface friction estimation using force tables
US8086367B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 2008 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Jul 26, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T2250/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A system and method for estimating vehicle lateral velocity and surface coefficient of friction using front and rear axle lateral force versus side-slip angle tables and sensor measurements. The sensor measurements include lateral acceleration, yaw-rate, longitudinal speed and steering angle of the vehicle. The method includes calculating front and rear axle lateral forces and front and rear side-slip angles on the axles of the vehicle. The method also includes identifying two equations from the calculated lateral forces and the vehicle measurements. The method provides tables that identify a relationship between the calculated front and rear axle lateral forces and the front and rear side-slip angles, and determines the vehicle lateral velocity and surface coefficient of friction from the tables.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.